OpenBSD Events and Papers

OpenBSD developers, users and sponsors attend trade shows and conferences, give papers, and organize "Birds Of a Feather" (BOF) sessions. This is an opportunity to find out more about OpenBSD or just meet like-minded people.

Future events:

Past events:

2026

• BSD-NL , May 9, Utrecht, The Netherlands
  • Florian Obser - Let's find out how to get predictable IPv6 addresses assigned to OpenBSD VMs (slides)

2025

• Sydney Linux Users Group , Nov 28, Sydney Australia.
  • Darren Tucker - Introduction to OpenSSH (slides).

• heise devSec 2025 , Sep 30 - Oct 01, Regensburg, Germany
  • Rafael Sadowski - Security First: OpenBSD rigorose Sicherheitsstrategie für Softwareentwickler

• EuroBSDCon 2025 , Sep 24-28, 2025, Zagreb, Croatia.
  • Alexander Bluhm - Update on OpenBSD Networking Performance Improvements (slides)
  • Marc Espie - DPB: One protocol to build them all (slides)
  • Stefan Sperling - The Game of Trees Hub (slides)
  • Florian Obser - We choose to do the things, not because they are easy... (slides)
  • Hans-Jörg Höxer - Confidential Computing with OpenBSD - The Next Step (slides)

• BSDCan 2025 , Jun 13-14, 2025, Ottawa, CA.
  • Hans-Jörg Höxer - Confidential Computing with OpenBSD - The Next Step (slides, video)

2024

• EuroBSDCon 2024 , Sep 19-22, 2024, Dublin, Ireland.
  • Dave Voutila - vmd's multi-process device emulation: 2 releases later (slides, video)
  • Andrew Hewus Fresh - Why rewrite fw_update(8)? (slides, video)
  • Florian Obser - OpenBSD vs. IPv6 (slides, video)
  • Alexander Bluhm - A Packet's Journey Through the OpenBSD Network Stack (slides, video)
  • Hans-Jörg Höxer - Confidential Computing with OpenBSD vmd(8) (slides, video)

• Fossy 2024 , Aug 1-4, 2024, Portland, OR, USA.
  • Andrew Hewus Fresh - Why rewrite fw_update(8)? (slides, video)

• BSDCan 2024 , May 29-Jun 1, 2024, Ottawa, CA.
  • Andrew Hewus Fresh - Why rewrite fw_update(8)? (slides, video)
• Real World Post Quantum Cryptography (RWPQC) Workshop , Mar 4 2024, Toronto, Canada.
  
  • Damien Miller - OpenSSH PQC past, present, future (slides)

2023

• EuroBSDCon 2023 , Sep 14-17, 2023, Coimbra, Portugal.
  • Otto Moerbeek - How OpenBSD's malloc helps the developer (slides, video).
  • Matthieu Herrb - Practical Use of OpenBSD Routing Domains with Redundant Firewalls (slides, video).
  • Matthieu Herrb - Towards running a Wayland Compositor on OpenBSD (slides).
  • Marc Espie - OpenBSD Ports and Packages: making things faster and easier (slides, video).
  • Alexander Bluhm - OpenBSD Attack Mitigations (slides, video).
  • Klemens Nanni - The OpenBSD Installer (slides, video).

• AsiaBSDCon 2023 , March 30 - April 2, 2023, Tokyo, Japan.
  • Florian Obser - Dynamic Host Configuration, please (slides)
  • Dave Voutila - Hardening Emulated Devices in OpenBSD's vmd(8) Hypervisor (paper, slides)

• CanSecWest, Mar 22-24, Vancouver, Canada
  • Theo de Raadt - Synthetic Memory Protections (slides)

• CLT 2023 , Mar 11-12, Chemnitz, Germany
  • Rafael Sadowski - OpenBSD Packages – Erfahrungen als Maintainer von 500 Apps (DE) (slides (EN), video (DE))

• FOSDEM 2023 , Feb 4-5, 2023, ULB, Brussels, Belgium
  • Stefan Sperling - Game of Trees Daemon (slides, video)

• Internal Seminar of the system team at Epita , Jan 12, 2023, Le Kremlin-Bicêtre, France
  
  • Marc Espie - Mitigation techniques in OpenBSD (in french) (slides) (video)

2022

• EuroBSDCon 2022 , Sep 15-18, 2022, Vienna, Austria
  
  • Alexander Bluhm - Steps towards Faster OpenBSD Networking (slides)
  • Theo Buehler - Recent progress in and around LibreSSL (slides, video)
  • Ken Westerback - How OpenBSD transforms a bag of blocks into a set of useful filesystems (slides, video)
  • Marc Espie - Architectures vs the ports tree: a losing battle? (slides, video)
  • Landry Breuil - Taming the fox (slides, video)
  • Philipp Buehler - Puffy presents video conferencing (Jitsi) (slides) video part I, video part II )

• JRES 2021 , May 17-20, 2022, Marseille, France
  
  • Matthieu Herrb gave a tutorial (in French): Installation de pare-feux redondants avec OpenBSD (slides, companion document, video).

2021

• EuroBSDCon 2021 , Sep 18-19, 2021, Vienna online, Austria
  
  • Marc Espie - Debug Packages in OpenBSD (slides, video)

2020

• Fosdem 2020 , February 1-2, 2020, Bruxelles, Belgium.
  
  • Giovanni Bechis - OpenSMTPD in the clouds, the story of an HA setup (video)
  • Florian Obser - unwind(8) a privilege-separated, validating DNS recursive nameserver for every laptop. (slides, video)

2019

• EuroBSDCon 2019 , September 19-22, 2019, Lillehammer, Norway.
  
  • Reyk Floeter - Modernizing relayd and the road to HTTP/2 (video)
  • Stefan Sperling - Game of Trees (slides, video)
  • Alexander Bluhm - Visualization of Regression and Performance (slides, video)
  • Patrick Wildt - Wireless Fidelity with bwfm(4) (slides, video)
  • Marc Espie - Advanced ports toolkit: near-perfect packing-list generation (slides, video)
  • Mischa Peters - The OpenBSD hypervisor in the wild, a short story. (slides, video)

• vBSDcon 2019 , September 5-7, 2019, Reston, VA, USA.
  
  • Kurt Mosiejczuk - Care and Feeding of OpenBSD Porters (video)

• Calgary Unix Users Group , May 28, 2019, Alberta, Canada.
  
  • Theo de Raadt - Deterministic Behaviours are your Attacker's Friend

• BSDCan 2019 , May 15-18, 2019, Ottawa, Canada.
  
  • Peter Hessler - OpenBSD vmm at bsd.network and conference tutorials (bhyvecon Ottawa 2019)
  • Bob Beck - libtls for beginners conference tutorial
  • Theo Buehler - Design and verification of the TLS 1.3 handshake state machine in LibreSSL (slides, video)
  • Florian Obser - unwind(8) a privilege-separated, validating DNS recursive nameserver for every laptop (slides, video)
  • Stefan Sperling - Building an accessible OpenBSD laptop (Enabling secure and functional computing for a person with severe disabilities) (slides, video)
  • Antoine Jacoutot - syspatch(8), The Boring Healing Potion (slides)
  • Alexander Bluhm - Measuring Performance on OpenBSD (slides, video)
  • Bob Beck Unveil in OpenBSD (video)
  • Jan Klemkow - Network booted OpenBSD Workstations (slides, video)

• CarolinaCon 15 , April 26-28, 2019, Charlotte, North Carolina, USA.
  
  • Lawrence Teo, Writing Exploit-Resistant Code with OpenBSD (slides, video)

• EuroIX 34 , March 31-April 2, 2019, Toulouse, France.
  
  • Claudio Jeker, OpenBGPD, Adding Diversity to Route Server Landscape (slides)

• AsiaBSDCon 2019 , March 20-24, 2019, Tokyo, Japan.
  
  • Mike Larkin, OpenBSD vmm(4) update (slides, video), (bhyvecon2019)
  • Todd Mortimer, Removing ROP Gadgets from OpenBSD (slides), (paper)

2018

• DENOG Meeting , Nov 21-22, 2018, Darmstadt, Germany.
  
  • Claudio Jeker, OpenBGPD, gotta go fast! (slides, video)

• OpenRheinRuhr 2018 , Nov 03-04, 2018, Oberhausen, Germany.
  
  • Rafael Sadowski - OpenBSD Einblick, Ueberblick und Ausblick (slides)

• SWINOG #34 , Oct 30, 2018, Bern, Switzerland.
  
  • Claudio Jeker, OpenBGPD, gotta go fast! (slides)

• Netnod Tech Meeting , Oct 11, 2018, Stockholm, Sweden.
  
  • Claudio Jeker, OpenBGPD, gotta go fast! (slides, video)

• EuroBSDcon 2018 , Sep 21-23, 2018, Bucharest, Romania.
  
  • Marc Espie, Advances in OpenBSD packages: https is a lie (slides)
  • Kristaps Džonsons, OpenBSD and Diving (slides, video)
  • Ingo Schwarze, Better documentation - on the web and for LibreSSL (slides, source, video)
  • Bob Beck, Unveil in OpenBSD (slides)
  • Todd Mortimer, Removing ROP Gadgets from OpenBSD (slides, video)
  • Bob Beck, LibTLS Tutorial for TLS beginners (tutorial)
  • Peter Hessler, Introduction to BGP for developers and sysadmins

• BSD Users Stockholm Meetup , Sep 5, 2018, Stockholm, Sweden.
  
  • Anton Lindqvist, Fuzzing the OpenBSD Kernel (slides)

• BSDCan 2018 , June 6-9, 2018, Ottawa, Canada.
  
  • Ayaka Koshibe, Mininet on OpenBSD - Using rdomains for interactive SDN testing and development (slides, video)
  • Bob Beck, Adventures in OpenBSD pledge - SIGABRT is your friend. (slides, video)
  • Florian Obser, slaacd(8) - A privilege separated and sandboxed IPv6 Stateless Address AutoConfiguration Daemon (slides, video)
  • Henning Brauer, OpenBSD/x-ray - OpenBSD on medical x-ray machines (video)
  • Ingo Schwarze, Forget reusability, aim for perfection - New lessons from mandoc development (slides, source, video)
  • Peter Hessler, BGP for developers and sysadmins (tutorial)
  • Bob Beck, Writing TLS secured client and server programs using the libtls API from libressl (tutorial)
  • Peter Hansteen, PF and networking tutorial with OpenBSD (tutorial)
  • Theo de Raadt, Speculation about Intel Speculation (slides)

• Calgary Unix Users Group , March 27, 2018, Alberta, Canada.
  Theo de Raadt gave a presentation Thwarting Return Oriented Programming (ROP) Attacks.

• AsiaBSDCon 2018 , March 8-11, 2018, Tokyo, Japan.
  
  • Mike Larkin, OpenBSD vmm(4) update (paper, video) (bhyvecon2018)
  • Henning Brauer, OpenBSD/x-ray (paper, slides, video)
  • Ayaka Koshibe, Mininet on OpenBSD (paper, slides, video)

• GUUG Frühjahrsfachgespräch 2018 , Feb 28 - Mar 2, 2018, University Leipzig, Germany.
  
  • Sebastian Benoit, Stefan Sperling, Aktuelles in OpenBSD (German) (slides)

• FOSDEM 2018 , Feb 3 - 4, 2018, ULB Campus Solbosch, Brussels, Belgium.
  
  • Antoine Jacoutot, syspatch(8), the boring healing potion (slides, video)

• NYCBUG Monthly Meeting , Jan 3, 2018, New York, New York, USA.
  Brian Callahan ran an OpenBSD porting workshop.

2017

• BSDTW 2017 November 11-12, 2017, Taipei, Taiwan.
  
  • Theo de Raadt, Mitigations and other real Security Features

• Open Source Summit 2017 October 23-26, 2017, Prague, Czech Republic.
  
  • Giovanni Bechis gave a talk about pledge(2) (slides)

• EuroBSDcon 2017 21-24 September, 2017, Paris, France.
  
  • Antoine Jacoutot and Baptiste Daroussin, My BSD sucks less than yours (paper, slides) (video part 1 and part 2)
  • Theo de Raadt, Pledge and Privsep (video)
  • Marc Espie, "Is it done yet ?" The never ending story of pkg tools (video)
  • Jasper Lievisse Adriaanse, OpenBSD's small steps towards DTrace (a tale about DDB and CTF) (video)
  • Gilles Chehade, OpenSMTPD, current state of affairs (video)
  • Martin Pieuchot, Your scheduler is not the problem (video)
  • Alexander Bluhm, Never Lose a Syslog Message (video)
  • Landry Breuil, 7 years of maintaining firefox (video)
  • Stefan Sperling, Getting started with OpenBSD device driver development (video)
  • Peter Hessler, BGP for developers and sysadmins (tutorial)

• LSE Summer week 2017 , July 14-15, 2017, Paris, France.
  
  • Baptiste Daroussin and Antoine Jacoutot, My BSD sucks less than yours (paper)
  • Marc Espie, gcc vs clang: waaaat (slides)
  Full video stream on GConfs channel, to be released as individual videos.

• pkgsrcCon 2017 , Jul 1-2, 2017, London, UK.
  
  • Giovanni Bechis gave a talk about pledge(2) (slides and video)

• BSDCan 2017 , June 7-10, 2017, Ottawa, Canada.
  
  • Henning Brauer, TCP Synfloods - an old yet current problem, and improving pf's response to it

• AsiaBSDCon 2017 , March 9-12, 2017, Tokyo, Japan.
  
  • Peter Hessler, Bidirectional Forwarding Detection (BFD) implementation and support in OpenBSD (paper, slides)
  • Mike Larkin, OpenBSD vmm(4) update (bhyvecon2017)
  • Antoine Jacoutot and Baptiste Daroussin, Comprehensive and biased comparison of OpenBSD and FreeBSD

• FOSDEM 2017 , Feb 4 - 5, 2017, ULB Campus Solbosch, Brussels, Belgium.
  
  • Antoine Jacoutot and Baptiste Daroussin, My BSD Sucks Less Than Yours (video)

• linux.conf.au 2017 , Jan 16 - 20, 2017, Hobart, Australia.
  
  • Joel Sing, libtls: Rethinking the TLS/SSL API (video)

2016

• Capitole du Libre 2016 , Nov 19 - 20, 2016, Toulouse, France.
  Vincent Gross presented an introduction to OpenBSD and ran the OpenBSD booth with some help from Matthieu Herrb and other volunteers.

• EuroBSDcon 2016 , Sep 22 - 25, 2016, Belgrad, Serbian Republic.
  
  • Landry Breuil, Building packages on exotic architectures
  • Peter Hessler, Bidirectional Forwarding Detection (BFD) implementation and support in OpenBSD
  • Ingo Schwarze, Why and how you ought to keep multibyte character support simple (roff/mm/gpresent source code)
  • Stefan Sperling, OpenBSD meets 802.11n
  • Antoine Jacoutot, OpenBSD rc.d(8)
  • Marc Espie, Retrofitting privsep into dpb and pkg_add
  • Martin Pieuchot, Embracing the BSD routing table

• Epita LSE Summer week 2016 , July 14 - July 16 2016, Paris, France
  
  • Marc Espie, Proot: chroot made easy (video)
  • Antoine Jacoutot, OpenBSD rc.d(8) (video)

• BSDCan 2016 , June 8 - 11, 2016, Ottawa, Canada.
  
  • Sebastian Benoit, Open Source Routing
  • Mike Belopuhov, Implementation of Xen PVHVM Drivers in OpenBSD
  • Henning Brauer, Running an ISP on OpenBSD
  • Reyk Flöter, An OpenFlow Implementation for OpenBSD
  • Peter Hessler, Bidirectional Forwarding Detection (BFD) Implementation and Support in OpenBSD
  • Antoine Jacoutot, OpenBSD rc.d(8) (video)

• Calgary Unix Users Group , May 24, 2016, Alberta, Canada.
  Theo de Raadt gave a presentation about pledge.

• International Cryptographic Module Conference , May 19, 2016, Ottawa, Canada.
  Giovanni Bechis presented an overview of LibreSSL.

• dotSecurity , Apr 22, 2016, Paris, France.
  Theo de Raadt presented a talk about pledge(2)'s relationship to privilege separation.

• AsiaBSDCon 2016 , March 10-13, 2016, Tokyo, Japan.
  
  • Mike Belopuhov, Implementation of Xen PVHVM drivers in OpenBSD (paper, slides)
  • Henning Brauer, Running an ISP on OpenBSD
  • Antoine Jacoutot, OpenBSD rc.d(8) (paper, slides)
  • Mike Larkin, OpenBSD vmm(4) update (bhyvecon2016)
  • Reyk Flöter, OpenBSD vmm(4) update part 2: vmd(8) (bhyvecon2016)
  • Mike Belopuhov, OpenBSD project status update (slides)

• LVEE 2016 Winter Edition , Feb 12-14, 2016, Rakov, Belarus.
  Vadim Zhukov gave two talks for mostly Linux-speaking audience: about OpenBSD development process and about some debatable features from 5.8 & 5.9 releases.

2015

• Open Source Day 2015 , Nov 28, 2015, University of Udine, Italy.
  Giovanni Bechis gave a talk about OpenSSH and one about OpenSMTPD.

• RIPE 71 , Nov 16-20, 2015, Bucharest, Romania.
  Peter Hessler gave a lightning talk on the Current Status of OpenBSD / OpenBGPd. A video is available.

• Hackfest 2015 , Nov 6-7, 2015, Quebec City, Canada.
  Mike Larkin presented Kernel W^X Improvements In OpenBSD. A video is available.
  Theo de Raadt presented pledge() - a new mitigation mechanism. A video is available.

• Euro-IX 2015 , Oct 27, 2015, Berlin, Germany.
  Peter Hessler gave a lightning talk on the Current Status of OpenBSD / OpenBGPd

• LinuxCon Europe 2015 , October 5-7, 2015, Dublin, Ireland.
  Giovanni Bechis gave a talk about OpenSMTPD

• EuroBSDcon 2015 , October 1-4, 2015, Stockholm, Sweden.
  
  • Vadim Zhukov: Raceless Network Configuration: Questions and Questions
  • Ted Unangst: Cryptography in OpenBSD: Another Overview
  • Stefan Sperling: softraid(4) boot
  • Jasper Lievisse Adriaanse: Portroach, OpenBSD distfile scanner
  • Marc Espie: Faster and more secure packages in OpenBSD
  • Ingo Schwarze: mandoc: from scratch to the standard BSD documentation toolkit in 6 years (roff/mm/gpresent source code, video)

• FSec 2015 , September 14-16, 2015, Faculty of Organization and Informatics, Varaždin, Croatia.
  Some OpenBSD developers were in Varaždin for the l2k15 hackathon, and afterwards two spoke at FSec.
  Theo de Raadt presented on tame(2).
  Bob Beck presented about LibreSSL's libtls.
  

• Calgary post-hackathon discussion, July 20, 2015, Calgary, Canada.
  Many OpenBSD developers were in Calgary for the c2k15 hackathon, and afterwards informally discussed their recent work.
  SAIT Campus, Room MD321, M Stan Grad Center (Reddish 4-story building in center of campus)
  Started at 17:30
  

• NYC*BUG , June 18, 2015, New York, New York, USA and June 17, 2015, CDBUG Albany, New York, USA.
  Ingo Schwarze gave a talk "mandoc: from scratch to the standard BSD documentation toolkit in 6 years." Presentation slides and roff/mm/gpresent source code are available.

• BSDCan 2015 , June 10 - 13, 2015, Ottawa, Canada.
  
  • Reyk Flöter: Introducing OpenBSD's new httpd(8)
  • Ingo Schwarze: mandoc(1): Becoming the main BSD manual toolbox (slides, roff/mm/gpresent source code, video)
  • Peter Hansteen: pf(4): The OpenBSD Packet Filter: Building The Network You Need (tutorial)
  • Peter Hessler: Using routing domains and routing tables in a production network
  • Ted Unangst: signify: Securing OpenBSD From Us To You
  • George Rosamond and Brian Callahan: Building BUGs: A Broad Overview of the New York City *BSD User Group

• YAPC::NA 2015 , Jun 8-10, 2015, Salt Lake City, UT, USA.
  Andrew Fresh gave a Perl in OpenBSD talk at Yet Another Perl Conference: North America. Presentation slides and video (with very poor audio) are available.

• Rensselaer Center for Open Source Software , Mar 20, 2015, Rensselaer Polytechnic Institute, Troy, NY.
  Brian Callahan gave a guest lecture about OpenBSD. Presentation slides and video are also available.

• CeBIT 2015 , Mar 17, 2015, Hannover, Germany.
  Giovanni Bechis gave a talk about LibreSSL.

• AsiaBSDCon 2015 , March 12 - 15, 2015, Tokyo, Japan.
  
  • Claudio Jeker: Advanced networking and routing on OpenBSD (tutorial)
  • Reyk Flöter: OpenBSD's new httpd
  • Henning Brauer: OpenBSD sucks
  • Ted Unangst: Pruning and Polishing: Keeping OpenBSD Modern
  • Pascal Stumpf: Converting OpenBSD to PIE
  • Peter Hessler: The results of using BGP for realtime import and export of spam whitelist/blacklist entries

• Portland Perl Mongers , Mar 12, 2015, Portland, Oregon, US.
  Andrew Fresh gave a talk about Perl in OpenBSD.

2014

• Open Source Day 2014 , Nov 29, 2014, University of Udine, Italy.
  Giovanni Bechis gave a talk about LibreSSL.

• Hackfest 2014 , Nov 7-8, 2014, Quebec City, Canada.
  Theo de Raadt presented an updated talk about arc4random.

• RPISEC Weekly Meeting , Oct 24, 2014, Rensselaer Polytechnic Institute, Troy, NY, USA.
  Brian Callahan gave a talk on "OpenBSD: Introduction and Primer for the Security Conscious."

• X Developer's Conference 2014 , Oct 8 - 10, 2014, Bordeaux, France.
  Matthieu Herrb gave a short talk about the "Status of the graphics stack on OpenBSD".

• EuroBSDcon 2014 , Sep 25 - 28, 2014, Sofia, Bulgaria.
  There were 16 public OpenBSD-related events out of 38, more than in any previous conference listed here:
  
  • Peter Hansteen: "Building The Network You Need With PF" (video: part 1 part 2) and "Transition to OpenBSD 5.6" (video: part 1 part 2) (tutorials)
  • Stefan Sperling: "Subversion for FreeBSD developers" (tutorial) (video)
  • Ingo Schwarze: "Let's make manuals more useful!" (tutorial slides, roff/mm/gpresent source code, video part 1 mdoc and QA and part 2 search and system integration; more comprehensive paper, roff/mm source code)
  • Ted Unangst: "Developing Software in a Hostile Environment" (video) and "LibreSSL: More Than 30 Days Later" (video)
  • Martin Pieuchot: "Taming OpenBSD Network Stack Dragons" (video)
  • Henning Brauer: "OpenBGPD turns 10 years - Design, Implementation, Lessons learned" (video)
  • Claudio Jeker: "vscsi(4) and iscsid - iSCSI initiator the OpenBSD way" (video)
  • Peter Hessler: "Using routing domains / tables in a production network" (video)
  • Paul Irofti: "Making OpenBSD Useful on the Octeon Network Gear" (video)
  • Kristaps Dzonsons: "Bugs Ex Ante" (video)
  • Theo de Raadt: "arc4random - 1996 to present"
  • Masao Uebayashi: "Porting Valgrind to NetBSD and OpenBSD" (video)
  • Marc Espie: "Making make parallel - legacy code nightmare" (video)
  • Philip Guenther: "Secure lazy binding" (video)

• BSDDay Argentina 2014 , Aug 9, 2014, Buenos Aires, Argentina.
  

• NYCBUG Monthly Meeting , Aug 6, 2014, New York, New York, USA.
  Brian Callahan gave a talk on "OpenBSD Ports."

• LSE Summer Week , July 19, 2014, Le Kremlin-Bicetre, France.
  Marc Espie gave a talk about signed packages in OpenBSD (in french) Link to video.

• Calgary Unix Users Group , May 27, 2014, City of Calgary Water Center, Calgary, Alberta.
  Bob Beck talked about LibreSSL. Afterwards, Theo de Raadt joined in for a Q&A about software quality.

• French conference, at the behest of Alten, June 23, 2014, Boulogne, France
  Marc Espie, My life as an OpenBSD developer

• BSDCan 2014 , May 14 - 17, 2014, Ottawa, Canada.
  Paul Irofti, Porting OpenBSD on the MIPS64-based Octeon Platforms
  Peter Hessler gave a talk on "Using BGP for realtime import and export of spam whitelist/blacklist entries: a year in the life".
  Henning Brauer, OpenBGPD turns 10 years: Design, Implementation, Lessons learned
  Ingo Schwarze, New trends in mandoc: enhancing the modern toolbox for the classic documentation formats (groff/mm/gpresent source, video).
  Bob Beck, LibreSSL - The first 30 days and the Future.

• AsiaBSDCon 2014 , Mar 13 - 16, 2014, Tokyo, Japan.
  Henning Brauer, OpenBGPD turns 10 years - Design, Implementation, Lessons learned
  Reyk Floeter gave a talk on "VXLAN(4) and Cloud-based networking with OpenBSD".

• Linux Vacation Eastern Europe Conference 2014, Winter edition , Feb 15, 2014, Minsk, Belarus.
  Vadim Zhukov gave two talks about OpenBSD ports in Russian: quick introduction at OpenBSD infrastructure itself (theoretical one), and updated KDE4 porting success story (practical one).

• NYCBUG Monthly Meeting , Jan 8, 2014, New York, New York, USA.
  Brian Callahan gave a talk on "OpenBSD: a crash course." Presentation slides and audio are also available.

2013

• ruBSD 2013 , Dec 14, 2013, Moscow, Russia.
  Theo de Raadt gave a talk on "Security Mitigation Techniques: An update after 10 years".
  Henning Brauer gave a talk on "OpenBSD's pf: Design, Implementation and Future".
  Mike Belopuhov gave a talk on "OpenBSD: Where crypto is heading?" (Russian, English)
  Theo de Raadt also gave interview about current state of OpenBSD project.
  Henning Brauer also gave interview about history and future of PF.
  

• vBSDcon 2013 , Oct 25 - 27, 2013, Dulles, Virginia, USA.
  Henning Brauer & Reyk Floeter gave a talk on "Inspecting packets with OpenBSD and PF".

• EuroBSDcon 2013 , Sep 28 - 29, 2013, St. Julian's, Malta.
  Theo de Raadt gave a keynote on "Y2038: Going long-long on time_t to cope with 2,147,483,647+1".
  Bob Beck gave a talk on "Modernizing and Improving the Buffer Cache and VFS Midlayer in OpenBSD".
  David Gwynne gave a talk on "SCSI Multipathing in OpenBSD".
  Eric Faurot gave a talk on "ASR: New Asynchronous DNS Resolver Implementation for OpenBSD".
  Vadim Zhukov gave a talk on "Porting Modern KDE4 to OpenBSD: A Success Story".
  Marc Espie gave a talk on "Ports and Packages in OpenBSD: Refactoring an Existing Tool Base".
  Landry Breuil gave a talk on "Porting Firefox to BSD: How to Keep Up with Fast Moving Projects and Upstream Patches".
  Alexander Bluhm gave a talk on "Zero-Copy Socket Splicing in the OpenBSD Kernel".
  Henning Brauer gave a talk on "The Surprising Complexity of TCP/IP Checksums".
  Reyk Floeter gave a talk on "Relayd: Improved High Availability Load-balancing and Connection Proxying".
  Peter Hessler gave a talk on "Realtime Distribution of Anti-SPAM Black and White Lists using BGP".
  
  Claudio Jeker gave a tutorial on "BGP, OSPF: Advanced Network Routing with OpenOSPFD and OpenBGPD" the day before the conference (Sep 27).

• BSDCan 2013 , May 15 - 18, 2013, Ottawa, Canada.
  Landry Breuil, Mozilla on OpenBSD: When the lizard meets puffy (video)
  Bob Beck, The Buffer Cache in OpenBSD - Bigger Is Better
  Henning Brauer gave a talk on "The surprising complexity of checksums in TCP/IP: reworking the checksum handling in the OpenBSD network stack".
  Reyk Floeter gave a talk on "OpenIKED: A portable IKEv2 VPN implementation".
  

• Central European BSD Day 2013 , Apr 6, 2013, Institute of Biostructures and Bioimaging, Naples, Italy.
  Giovanni Bechis gave a talk about npppd(8). Presentation slides and video are also available.

• NYCBUG Monthly Meeting , Apr 3, 2013, New York, New York, USA.
  Brian Callahan gave a talk on "MIPS on OpenBSD." Presentation slides and audio are also available.

• Portland Linux/Unix Group Advanced Topics meeting , Mar 19, 2013, Portland, Oregon, USA.
  Chris Cappuccio gave a talk on "flashrd+nsh: OpenBSD imaging and easy configuration for network appliances and virtual environments." Presentation slides and audio are also available.

• AsiaBSDCon 2013 , Mar 14 - 17, 2013, Tokyo, Japan.
  Reyk Floeter gave two talks: on OpenIKED (paper) and on relayd (paper).
  Eric Faurot gave a talk on "OpenSMTPD: We deliver!"
  Peter Hessler, Using BGP for Realtime import and export of OpenBSD SPAMD entries
  Henning Brauer, The surprising complexity of TCP/IP checksums in the network stack (paper)

• FOSDEM 2013 , Feb 2 - 3, 2013, ULB Campus Solbosch, Brussels, Belgium.
  Mike Belopuhov gave a talk about IPsec improvements in OpenBSD and Matthieu Herrb gave a talk about X.Org on non-Linux systems.

2012

• Open Source Day 2012 , Nov 24, 2012, University of Udine, Italy.
  Giovanni Bechis gave a talk on OpenBSD update.

• BSDday Argentina 2012 , Nov 17, 2012, Lambare 873, Buenos Aires City, Argentina.
  

• EuroBSDcon 2012 , Oct 18 - 21, 2012, Warsaw, Poland.
  Mike Belopuhov, Improvements in the IPsec stack and OpenBSD cryptographic framework (video) Henning Brauer gave a talk about the upcoming new queueing subsystem. (video)
  Marc espie gave a talk about building ports/packages. (video)
  Peter Hessler gave a talk about using rdomains in the real world. (video)
  Philip Guenther gave a talk about threads enhancements.

• BSDCan 2012 , May 9 - 12, 2012, Ottawa, Canada.
  Henning Brauer gave a talk about the upcoming new queueing subsystem.

• BSDDay 2012 , May 5, 2012, Vienna, Austria.
  Giovanni Bechis gave a talk about relayd(8). Presentation slides and video are also available.

• AsiaBSDCon 2012 , Mar 22 - 25, 2012, Tokyo, Japan.
  Henning Brauer and Ryan McBride gave a talk to celebrate OpenBSD PF's 10th Anniversary
  Kristaps Dzonsons gave a talk about mandoc.
  Henning Brauer gave an OpenBSD update talk.
  Peter N. M. Hansteen gave a tutorial on building networks with PF.
  

• Open Source Days , Mar 8 - 11, 2012, Copenhagen, Denmark.
  Peter Hansteen gave PF tutorials.

2011

• T-Dose 2011, November 5 - 6, 2011, Eindhoven, The Netherlands
  Ariane van der Steldt, Memory allocators in modern Operating Systems

• EuroBSDCon 2011 , October 6 - 9, 2011, Maarssen (near Utrecht) in The Netherlands.
  Henning Brauer gave an OpenBSD Update
  Henning Brauer and Ryan McBride gave a talk OpenBSD PF's 10th Anniversary
  Paul Irofti presented a paper about "OpenBSD's New Suspend and Resume Framework". Presentation slides are also available.
  Claudio Jeker gave a talk "The MLPS framework in OpenBSD"
  Mark Kettenis gave a talk "OpenBSD/sun4v: Porting OpenBSD to Sun's UltraSPARC T1 and T2 processors"
  Damien Miller gave a talk "Recent Developments in OpenSSH"
  Ken Westerback and David Gwynne gave a talk "OpenBSD SCSI Evolution"
  

• Slackathon 2011 , August 6, 2011, Stockholm, Sweden.
  Jonathan Gray gave an OpenBSD Update.
  Ariane van der Steldt gave talks about vmmap and 64 bit and jit.
  Paul Irofti gave a talk about the Compatibility Layer in OpenBSD 5.0.
  Henning Brauer gave a talk titled 10 years of PF.
  

• BSDCan 2011 , May 11 - 14, 2011, Ottawa, Canada.
  Peter N. M. Hansteen gave a tutorial on building networks with PF.
  Kristaps Dzonsons gave a talk about the roff tradition and mandoc.
  Ingo Schwarze gave a talk about mandoc in OpenBSD.
  Claudio Jeker gave a talk about vscsi(4) and iscsid - iSCSI initiator the OpenBSD way.
  Henning Brauer and Ryan McBride gave a talk to celebrate 10 years of PF.
  Henning, Ryan and Claudio gave a quick (5 Minutes) OpenBSD Update
  

• AsiaBSDCon 2011 , Mar 17 - 20, 2011, Tokyo, Japan.
  Due to the unsafeness of the Tokyo area, all speakers from OpenBSD cancelled their attendance at AsiaBSD.
  Damien Miller presented via VC on What's new in OpenSSH.

• linux.conf.au 2011 , January 24 - 29, 2011, Queensland, Australia
  David Gwynne, Firewalling with OpenBSD's pf and pfsync

2010

• NYCBSDCon 2010 , Nov 12 - 14, 2010, New York, New York.
  

• BSDday Argentina 2010 , Nov 5 - 6, 2010, Faculty of Natural Sciences, University of Buenos Aires.
  Martin Coco gave a talk about OpenBSD in production.
  

• EuroBSDCon 2010 , Oct 8 - 10, 2010, Karlsruhe, Germany.
  Peter N. M. Hansteen gave a tutorial on building networks with PF.
  Thordur Bjornsson and Owain Ainsworth talked about bouncing of the other kind - OpenBSD for large memory systems.
  Reyk Floeter gave a talk about iked(8) - Internet Key Exchange version 2 (IKEv2) in OpenBSD.
  Henning Brauer talked about something OpenBSD networking related.
  Marc Espie gave two talks: about package updates and about efficient distributed package builds in OpenBSD.
  Theo de Raadt gave a brief overview on what happened in OpenBSD during 2010.
  

• OSCON 2010 , Jul 19 - 23, 2010, Portland, Oregon, USA.
  O'Reilly sponsored booth. Many OpenBSD users happy to see us.

• pkgsrcCon 2010 , May 28 - 30, 2010, Basel, Switzerland.
  Jasper Lievisse Adriaanse gave a talk about OpenBSD ports.

• BSDCan 2010 , May 11 - 14, 2010, Ottawa, Canada.
  Henning Brauer gave a quick OpenBSD Update. Peter N. M. Hansteen gave a tutorial on building networks with PF.
  Henning Brauer and Sven Dehmlow gave a talk about Puffy At Work -- Getting Code Right And Secure.
  Jean-Philippe Dionne gave a talk about ECDYSIS OPEN-SOURCE NAT64 Implementation in OpenBSD PF.

• SecurityDate 2010 , May 7, 2010, Camerino, Italy.
  Giovanni Bechis gave a quick update on recent developments in OpenBSD.

• AsiaBSDCon 2010 , Mar 11 - 14, 2010, Tokyo, Japan.
  Marco Peereboom gave talks about softraid -- OpenBSD's virtual HBA, with benefits (paper) and (Epitome2 -- dedup for the masses. (paper)
  Claudio Jeker gave a talk about vscsi(4) and iscsid -- iSCSI initiator the OpenBSD way.
  Takuya Asada gave a talk about the SMP Implementation for OpenBSD/sgi. (paper)
  Alexandre Ratchov gave a talk about sndio -- audio and MIDI framework. (paper)
  Theo de Raadt gave a very short talk about vether(4) -- Because Canadian Internet Sucks.
  Ryan McBride gave a talk about What's wrong with PF.

2009

• OpenExpo 2009 Winterthur , Sep 23 - 24, 2009, Zurich/Winterthur, Switzerland.
  

• EuroBSDCon 2009 , Sep 17 - 19, 2009, Cambridge, UK.
  Henning Brauer gave a talk on performance improvements in the network stack.
  Otto Moerbeek gave a talk about the new malloc.
  Ted Unangst gave a talk about using kqueue.
  Peter N. M. Hansteen gave a tutorial on building networks with PF.
  Owain Ainsworth and Henning gave a quick update on recent developments in OpenBSD.

• Slackathon 2009 , Aug 15, 2009, Stockholm, Sweden.
  Ariane van der Steldt gave a presentation about OpenBSD Physical Memory Management.
  Claudio Jeker gave a short introduction about his work on Network Stack Virtualization.
  

• OpenKyiv 2009 , Aug 1, 2009, Kyiv, Ukraine.
  Vladimir Kirillov gave a presentation, OpenBSD Kernel Internals: The Hitchhiker's Guide.
  

• BSDday Argentina 2009 , May 29 - 30, 2009, Buenos Aires, Argentina.
  

• BSDCan 2009 , May 6 - 9, 2009, Ottawa, Canada.
  Peter N. M. Hansteen gave a tutorial on building networks with PF.
  Constantine A. Murenin gave a talk on quiet computing and fan control.
  Gordon Willem Klok gave a talk on processor power management.

• FOSS Aalborg 2009 , Mar 24, 2009, Aalborg, Denmark.
  Henning Brauer and Sven Dehmlow gave a presentation about secure programming.

• Chemnitzer Linux-Tage 2009 , Mar 14 - 15, 2009, Chemnitz, Germany.
  There was an OpenBSD booth run by Bernd Ahlers, Holger Mauermann and Felix Kronlage.
  

• AsiaBSDCon 2009 , Mar 12 - 15, 2009, Tokyo, Japan.
  Theo de Raadt gave a plenary talk about The OpenBSD release process: A success story.
  Claudio Jeker presented a paper about OpenBGPD - bringing full views to OpenBSD since 2004. Presentation slides are also available.
  Constantine A. Murenin presented a paper about OpenBSD Hardware Sensors Framework. Presentation slides are also available.
  David Gwynne presented a paper about Active-Active Firewall Cluster Support in OpenBSD.
  Kristaps Dzonsons presented a paper about Deprecating groff for BSD manual display.
  There was an active work-in-progress session, chaired by Mark T. Uemura.

• FOSDEM Brussels 2009 , Feb 7 - 8, 2009, Brussels, Belgium.
  There was an OpenBSD/OpenSSH booth and a Dev room. On Saturday we had our traditional BSD dinner.

• DCBSDCon 2009 , Feb 5 - 6, 2009, Washington, D.C., USA.
  Henning Brauer gave a talk about Performance Tuning in the OpenBSD Network Stack and PF.
  Ted Unangst presented OpenBSD versus SMP, Threading and Concurrency.
  Marco Peereboom introduced the Epitome suite.
  Kurt Miller gave his talk about Implementing PIE on OpenBSD.
  There was an OpenBSD booth, run by Bret Lambert.

• University of Coimbra, November, 2009, Coimbra, Portugal
  Matthieu Herrb, Security measures in OpenBSD

• University of Queensland COMP4000 course, February 2009, Queensland, Australia
  David Gwynne, Active-Active Firewall Cluster Support in OpenBSD

2008

• 25th Chaos Communication Congress (25C3) , Dec 27 - 30, 2008, Berlin, Germany.
  The 25C3 slogan was "Nothing to Hide".

• OpenCON 2008 , Nov 29 - 30, Venice, Italy.
  OpenBSD users and developers gave two days worth of OpenBSD talks and attended a big OpenBSD party on the saturday night.
  Ken Westerback gave a talk on The OpenBSD Foundation.
  Ken Westerback gave a talk on OpenBSD's Install Scripts.
  

• UKUUG Full-day PF tutorial , Nov 26 2008, London, UK.
  The UKUUG hosted a full-day PF tutorial by Peter Hansteen (Book of PF author), at the Caesar Room, Imperial Hotel, London.

• T-DOSE 2008 , Oct 25 - 26, 2008, Eindhoven, The Netherlands.
  Technical Dutch Open Source Event.
  Developers were present as well as an OpenBSD booth, run by the usual suspects.

• EuroBSDCon 2008 , Oct 16 - 19, 2008, Strasbourg, France.
  Peter N. M. Hansteen gave a tutorial on building networks with PF.
  Matthieu Herrb gave a talk on input handling in wscons and X.Org.
  Constantine A. Murenin gave a talk on the sensors framework.
  There was an OpenBSD booth, run by the usual suspects.

• NYCBSDCon 2008 , Oct 11 - 12, 2008, New York, New York.
  Jason Dixon gave a talk called BSD versus GPL.
  Anders Magnusson gave a talk on the design of PCC.
  Kurt Miller gave a talk on implementing PIE.
  Michael Shalayeff gave a talk on porting PCC to new architectures.
  Jason L Wright gave a talk called When Hardware Is Wrong, or "They can Fix It In Software".
  Audio for the talks is available here.
  There was an OpenBSD booth, run by Ray Lai and Okan Demirmen.
  

• Open Source Days 2008 , Oct 3 - 4, 2008, Copenhagen, Denmark.
  There was an OpenBSD and OpenSSH booth.

• OpenExpo 2008 , Sep 23 - 24, 2008, Zurich/Winterthur, Switzerland.
  There was an OpenBSD table, run by Stephan A. Rickauer.

• Slackathon 2008 , Sep 13, 2008, Stockholm, Sweden.
  Swedish annual OpenBSD conference.

• FrOSCon 2008 , Aug 23 - 24, 2008, Bonn/Rhein-Sieg, Germany.
  There was an OpenBSD booth, run by the usual suspects.

• OpenKyiv 2008 , Aug 2, 2008, Kyiv, Ukraine.
  Mike Belopuhov gave a talk called OpenBSD Kernel Architecture, Network Stack.
  There was plenty of OpenBSD activity including a BSD certification exam.

• Libre Software Meeting 2008 , Jul 1 - 5, 2008, Mont de Marsan, France.
  There was an OpenBSD and OpenSSH booth.

• Journées du Libre à Bruxelles 2008 , Jun 6 - 7, 2008, Sint-Gillis, Belgium.
  There was an OpenBSD and OpenSSH booth.

• LinuxTag 2008 , May 28 - 31, 2008, Berlin, Germany.
  There was plenty of OpenBSD activity (talks & booth).

• LinuxDays 2008 , May 21 - 22, 2008, Geneva, Switzerland.
  Julien Mabillard gave a presentation about OpenBSD and failover/load-balancing features. There was also an OpenBSD booth.

• BSDCan 2008 , May 14 - 17, 2008, Ottawa, Canada.
  Several OpenBSD developers were there.
  Constantine A. Murenin gave an overview of the sensors framework, Matthieu Herrb talked about the upcoming X.org plans and Ian Darwin gave a presentation about OpenMoko.
  John Pertalion and Oscar Knight presented a case-study of their OpenVPN on OpenBSD deployment.

• NLUUG spring conference 2008 , May 15, 2008, Ede, Netherlands.
  There has been an OpenBSD booth.

• Confidence 2008 , May 16 - 17, 2008, Krakow, Poland.
  Felix gave a presentation and there was an OpenBSD booth.

• DORS / CLUC 2008 , Apr 16 - Apr 18, 2008, Zagreb, Croatia.
  There was an OpenBSD booth, a talk on OpenBSD 4.3 by Wim and an IPsec workshop by Wim and Mitja Muženič.
  

• I Jornadas Tecnológicas Ciudad de Isla Cristina , Apr 3 - 4, 2008, Huelva, Spain.
  Igor Sobrado gave a talk on OpenBSD and related free software projects.
  

• UKUUG Spring 2008 , Mar 31 - Apr 2, 2008, Birmingham, UK.
  Peter Hansteen gave a full day PF tutorial and a fighting malware and spam talk. There was an OpenBSD booth, manned by Peter.
  

• AsiaBSDCon 2008 , Mar 27 - 30, 2008, Tokyo, Japan.
  Claudio Jeker gave a talk on OpenBSD Network Stack Internals. (paper)
  

• OpenExpo 2008 , Mar 12 - 13, 2008, Bern, Switzerland.
  There was an OpenBSD table, run by Stephan A. Rickauer.
  

• Chemnitzer Linux-Tage 2008 , Mar 1 - 2, 2008, Chemnitz, Germany.
  There was an OpenBSD table, run by Philipp.
  

• FOSDEM Brussels 2008 , Feb 23 - 24, 2008, Brussels, Belgium.
  Matthieu Herrb, BSD and X.Org: changes ahead
  There was an OpenBSD/OpenSSH booth and a Dev room. There was also an exam for BSD certification.
  On Saturday we had our traditional BSD dinner.

• Southern California Linux Expo 6x , Feb 8 - 10, 2008, Los Angeles, California, USA.
  There was an OpenBSD booth run by Darrin Chandler with live demonstrations and CDs for sale.

• Solutions Linux 2008 , Jan 29 - 31, 2008, Paris, France.
  There was an OpenBSD and OpenSSH booth with Marc Espie, Antoine Jacoutot, Gilles Chehade, Charles Longeau, Landry Breuil, Saad Kadhi, Wim and others. [pictures]

2007

• 24C3 Chaos Communication Congress in Berlin , December 27 - 30, 2007, Berlin, Germany.
  The motto was Volldampf voraus! (literally Full Steam Ahead).

• Capital Area BSD User Group , Dec 17, 2007, Columbia, Maryland, USA.
  Michael Erdely presented OpenBSD Ports Tutorial: Advanced Topics. [slides w/audio]

• OpenCON 2007 , Nov 30 - Dec 2, 2007, Venice, Italy.
  OpenCON is the only conference dedicated solely to OpenBSD. This edition was composed of one "tutorial day" and two days of conference. Three days entirely dedicated to OpenBSD with a lot of developers and users. Talks by OpenBSD developers were:
  • Jonathan Gray: Why are modern operating systems so complicated?
  • Mark Kettenis: OpenBSD/sparc64.
  • Reiner Jung and Jasper Lievisse Adriaanse: Gnome as OpenBSD desktop solution.
  • Bernd Ahlers: OpenBSD Ports Tutorial.
  • Claudio Jeker: OSPF v3 - OSPF for IPv6.
  • Rainer Giedat: Porting OpenBSD to MIPS based Devices

• Duisburger Linux User Group , Nov 17, 2007, Duisburg, Germany.
  Richard Verwayen gave a workshop on installing OpenBSD, [pictures].

• Come 2 Linux 2007 Essen , Nov 10 - 11, 2007, Essen, Germany.
  The *BSD projects had an OpenBSD and OpenSSH booth.

• NLUUG 25th anniversary , Nov 7, 2007, Amsterdam, Netherlands.
  There was an OpenBSD and OpenSSH booth with Wim, Otto, Floor and Kevin.

• Amsterdam user meeting Cafe De Deugniet , Nov 2, 2007, Amsterdam, Netherlands.
  Informal OpenBSD user meeting in Amsterdam, more info on Undeadly.org. [pictures]

• Ukrainian OpenBSD Users Group meeting , Nov 1, 2007, Kyiv, Ukraine
  Sergey Prysiazhnyi, community co-ordinator, gave a talk about Driver Architecture and OpenBSD using in Embedded Systems. [slides] [pictures] [video]

• COSSFEST 2007 , Oct 27, 2007, Calgary, Alberta,
  There was an OpenBSD booth present with 4.2 CDs.

• Systems , Oct 23 - 26, 2007, Munich, Germany.
  The *BSD projects had an OpenBSD and OpenSSH booth in Halle B2 110-2, run by DaN, Nikolay Sturm, Marco Pfatschbacher and some other volunteers.

• BSDConTR 2007 , Oct 19 - 20, 2007, Rectorate of Marmara University, SultanAhmet, Istanbul, Turkey.
  First Turkish Conference on BSD Systems.
  Marc Balmer talked about his work on support for radio clocks in OpenBSD.
  Gökhan Alkan gave a talk "Spam protection with OpenBSD and PF".
  Huzeyfe Önal gave a talk "Advanced Security solutions in OpenBSD".
  

• Les Journées Du Logiciel Libre 2007 , Oct 19 - 20, 2007, Lyon, France.
  There was an OpenBSD and OpenSSH booth, run by Damien Bergamini and Alexandre Anriot with the help of Thierry Thomas.

• Reflections/Projections 2007 , Oct 12 - 14, 2007, Champaign-Urbana, Illinois, USA.
  Peter Valchev gave a talk titled Using OpenBSD Security Features to Find Software Bugs.

• AUUG 2007 , Oct 13 - 14, 2007, Melbourne, Australia.
  Reyk Floeter talked about load balancing and TCP-relaying with hoststated. There were developers, users, and an OpenBSD booth present.

• T-DOSE 2007 , Oct 13 - 14, 2007, Eindhoven, The Netherlands.
  Technical Dutch Open Source Event.
  There were developers present as well as an OpenBSD booth, run by the usual suspects.

• OpenExpo 2007 , Sep 19 - 20, 2007, Zurich, Switzerland.
  There were developers present as well as an OpenBSD booth, run by the usual suspects. Stephan A. Rickauer gave a talk "OpenBSD and Linux: Insights into a migration project at the Institute of Neuroinformatics, ETH Zurich".
  

• EuroBSDCon 2007 , Sep 14 - 15, 2007, Copenhagen, Denmark.
  Marc Balmer gave a talk Support for Radio Clocks in OpenBSD.
  Pierre-Yves Ritschard gave a talk Load Balancing in OpenBSD Using hoststated.
  Claudio Jeker gave a talk Using OpenBSD as Routing Platform. (video)
  Peter Hansteen offered "A Packet Filter Tutorial" on the tutorial day.
  There was an OpenBSD booth, run by the usual suspects.

• Kieler Linux und Open Source Tage , Sep 07 - 08, 2007, Kiel, Germany.
  There was an OpenBSD and OpenSSH booth, run by Bernd.

• X.Org Developers' Summit 2007 , Sep 10 - 12, 2007, Cambridge, UK.
  Matthieu Herrb and Marc Balmer attended the 3-day summit to make sure the *BSD point of view was well represented.

• FrOSCon 2007 , Aug 25 - 26, 2007, Bonn/Rhein-Sieg, Germany.
  There was an OpenBSD booth, run by the usual suspects.

• Chaos Communication Camp 2007 , Aug 8 - 12, 2007, Finowfurt, Germany.
  This open air event had a big OpenBSD village with all the usual suspects.

• Libre Software Meeting 2007 , Jul 10 - 14, 2007, Amiens, France.
  There was an OpenBSD and OpenSSH booth, run by Wim, Matthieu and Alexandre with the help of Serge and Christelle.

• Slackathon 2007 , June 16, 2007, Stockholm, Sweden.
  Yet another round of fund raising for OpenBSD/SSH and general *BSD meeting that took place in Stockholm.

• LinuxTag 2007 , May 30 - Jun 2, 2007, Berlin, Germany.
  There were presentations by OpenBSD developers and an OpenBSD booth, run by the usual suspects, and Stephan A. Rickauer held Peter Hansteen's PF tutorial as well as the talk "OpenBSD and Linux: Insights into a migration project at the Institute of Neuroinformatics, ETH Zurich".

• Linuxwochen Vienna 2007 , May 31 - Jun 2, 2007, Vienna, Austria.
  There was an OpenBSD and OpenSSH booth run by Martin Reindl, Robert Peichaer and Teemu Schaabl.

• Calgary Unix Users Group , May 29, 2007, downtown Library, basement meeting room, Calgary, Alberta.
  Claudio Jeker, David Gwynne, Henning Brauer, Reyk Flöter, Matthieu Herrb, Marc Balmer, and Bob Beck discussed recent and future networking changes in OpenBSD, as well as Xenocara, support for radio clocks in OpenBSD, and Spam Reduction with OpenBSD spamd and greylisting. Some other OpenBSD developers attended to provide international colour.

• BSDCan 2007 , May 16 - 19, 2007, Ottawa, Canada.
  Several OpenBSD developers were there.
  Peter Hansteen gave a "Packet filtering for fun and profit" tutorial and presented a "Fighting malware and spam with free tools" talk.
  Ray Lai presented OpenCVS/OpenRCS and discussed why a secure CVS implementation is needed.
  Jason Dixon gave the closing session of BSDCan 2007.

• Confidence 2007 , May 12 - 13, 2007, Krakow, Poland.
  Felix, Henning and Wim gave presentations and ran the OpenBSD booth.

• OpenBSD Meeting V.2 , May 12, 2007, Verona, Italy.
  Another event organized by the OpenBEER team with italian OpenBSD related talks. Michele presented a talk about the OpenBSD network stack.

• NLUUG Voorjaarsconferentie 2007 , May 10, 2007, Ede, Netherlands.
  There was a presentation by Anil Madhavapeddy and an OpenBSD booth, run by the usual suspects.

• Portuguese OpenBSD Usergroup Meeting , May 5 - 6, 2007, Coimbra, Portugal.
  7th Meeting of the Portuguese OpenBSD Usergroup.
  Marc Balmer gave a talk "Ensuring Quality in OpenBSD Without a Formal Process".
  Rui Reis gave a presentation "The Honeynet.PT project".
  Michael Shalayeff gave a talk "Asynchronous I/O".
  Also present was Pedro Martelletto.

• DE-CIX 6th Technical Meeting , Apr 19, 2007, Schloss Kransberg, near Usingen, Germany.
  Henning Brauer and Reyk Flöter talked at the 6th technical meeting of the Deutsche Commercial Internet Exchange (DE-CIX). Henning gave an update on OpenBGPD and Reyk about the latest network-related changes since OpenBSD 4.1. They also talked about the status of test OpenBGPD route server running at the DE-CIX.

• 2. Linux-Informationstag Oldenburg , Apr 14 - 15, 2007, Oldenburg, Germany.
  Small Open-Source event. Of course there was an OpenBSD and OpenSSH booth run by Bernd, Felix and Tobias Stoeckmann. Felix gave a talk about the current state of OpenBSD development titled OpenBSD - Past, Present and Future.

• fisl8.0 , Apr 12 - 14, 2007, Porto Alegre, RS, Brazil.
  This was a fairly large conference in South America. Theo de Raadt presented a talk about Hardware Documentation.

• NYC*BUG April 2007 , Apr 4, 2007, NYC, USA.
  Ray Lai (ray@) gave a talk on OpenCVS. Slides and audio are available.

• 5. Erlanger Linuxtage , Mar 24 - 25, 2007, Erlangen, Germany.
  There was an OpenBSD/OpenSSH booth, run by Alexander von Gernler (grunk@). He also gave a talk called "Sichere Systeme mit OpenBSD" (german).

• UKUUG Spring 2007 Conference , Mar 19 - 21, 2007, Manchester, United Kingdom.
  Tom Cosgrove gave a presentation about "Third-Party Applications on OpenBSD" at the annual spring meeting of the UK's Unix and Open Systems User Group.

• AsiaBSDCon 2007 , Mar 8 - 11, 2007, Tokyo, Japan.
  Marc Balmer presented a paper Supporting Radio Clocks in OpenBSD. Presentation slides are also available.
  Ryan McBride gave talks on OpenBSD as a Development Platform and OpenBSD Network Randomness Injection: Further Improvements.
  Mathieu Sauve-Frankel gave a talk Recent Improvements in OpenBSD's IPsec Support.
  Damien Miller presented a paper Security measures in OpenSSH. Presentation slides are also available.
  There were also PF tutorials back to back, Peter Hansteen's "Firewalling with OpenBSD's PF packet filter" and Ryan McBride's "Advanced PF Rulesets".

• LinuxForum 2007 , Mar 2 - 3, 2007, Copenhagen, Denmark.
  There was an OpenBSD and OpenSSH booth run by Wim, Bernd and Michael in the best of circumstances. Felix gave a talk titled OpenBSD - Past, Present and Future.

• FOSDEM Brussels 2007 , Feb 24 - 25, 2007, Brussels, Belgium.
  There was an OpenBSD/OpenSSH booth with Matthieu, Marc, Mickey, Saad and Wim. On Saturday we had our traditional BSD dinner.
  Matthieu gave a talk on Xenocara in the X.Org devroom.

• Kiberpipa open sessions , February 20, 2007, Ljubljana, Slovenia.
  On that edition of weekly "Open sessions" meetings Mitja Muženič gave a talk on OpenBSD. Slides (in Slovenian), video (in Slovenian), and photos are available.

2006

• 23C3 Chaos Communication Congress in Berlin , December 27 - 30, 2006, Berlin, Germany.
  Who can you trust? Well, us. OpenBSD was there, of course, for our annual closing event. fkr, grunk, jsg, mbalmer, mickey, sturm, uwe, martin, henning, moritz, bernd and wvdputte were there to chat with attendees and discuss OpenBSD stuff. It was - as usual - a great end-of-the-year event. See you in Berlin again end of 2007.

• Moscow OpenBSD user meeting , December 8 - 9, 2006, Moscow, Russia.
  For details, please email Grange

• OpenCON 2006 , Dec 2 - 3, 2006, CourtYard Venice Airport, Tessera/Venice, Italy.
  OpenCON is the only conference dedicated solely to OpenBSD. 135 people were registered for the event, but since it was a completely open event, it is likely that even more people just walked in. Most talks were by OpenBSD developers, but there was also an impressive number of our developers just attending the conference. Talks by OpenBSD developers were:
  • Claudio Jeker: Network stack changes in OpenBSD
  • Marc Balmer: Support for Time Signal Station Receivers and GPS in OpenBSD
  • Felix Kronlage: Redundancy or mobile deployment with 3G technology
  • Jonathan Gray: Driver architecture and implementation in OpenBSD
  • Gordon Klok: Processor Power Management
  • David Gwynne: The OpenBSD Culture and he also filled in for Marco's Bio and Sensors in OpenBSD talk.
  • Michele Marchetto: OpenRIPD
  • Reyk Floeter: IPsec demystified
  • Theo de Raadt: Why hardware documentation matters so much and why it is so hard to get

  Also present were jcs, krw, mglocker, robert, wvdputte, martin, grunk, dhartmei, aanriot, sturm, and bernd. Of course there was an OpenBSD booth run by the usual suspects and you could buy our CD-ROMS, the audio CD and other stuff.

• OpenSourceTag 2006 , Nov 30, 2006, Hannover, Germany.
  Reyk gave a talk about OpenBSD as a reference project for secure software.

• European Peering Forum 2006 , Nov 29 - 30, 2006, Frankfurt, Germany.
  The European Peering Forum in Frankfurt was hosted by the 3 big european peering points DE-CIX, AMSIX and LINX, bringing network operators together. Henning was talking about OpenBGPD, slides are available.

• CONISLI 2006 , Nov 3 - 5, 2006, São Paulo, Brazil.
  4th edition of São Paulo's International Free Software Congress. Ken Westerback and Pedro Martelletto gave a talk.

• NYCBSDCon 2006 , Oct 28 - 29, 2006, New York City, USA.
  NYCBSDCon is the main conference on the East Coast for the BSD community to get together to share and gain knowledge, to network with like minded people. Several developers spoke, more were on hand:
  • David Gwynne and Marco Peereboom: bio and sensors in OpenBSD [audio]
  • Jason Wright: OpenBSD/sparc64 [audio]
  • Bob Beck: PF, it is not just for firewalls anymore [audio]
  • Bob Beck: OpenBSD spamd - greylisting and beyond [audio]
  • Ray Lai: First time booth bunny

• LinuxWorld Expo UK 2006 , Oct 25 - 26, 2006, Olympia, London, UK.
  There was an OpenBSD and OpenSSH booth, run by Wim, Tom, Peter, Federico and Pedro La Peu.

• Calgary Unix Users Group , Oct 24, 2006, downtown Library, basement meeting room, Calgary, Alberta.
  Theo de Raadt gave a talk regarding the increasing demand for vendors to open up their documentation.

• Systems , Oct 23 - 27, 2006, Munich, Germany.
  The *BSD projects were located at A3.542. There was an OpenBSD and OpenSSH booth, run by Wilhelm Bühler, DaN, Nikolay Sturm, Marco Pfatschbacher, and some other volunteers.

• hack.lu 2006 , Oct 19 - 21, 2006, Luxembourg/Kirchberg, Luxembourg.
  Henning Brauer gave a well received talk about OpenBGPD.

• Les Journées Du Logiciel Libre 2006 , Oct 13 - 14, 2006, Lyon, France.
  There was an OpenBSD and OpenSSH booth, run by Miod Vallat and Alexandre Anriot with the help of Thierry Thomas and Damien Bergamini.

• AUUG 2006 , Oct 10 - 13, 2006, Melbourne, Australia.
  Ryan Mcbride presented a full-day tutorial entitled "Advanced PF Rulesets" as well as two additional talks PF evolution and Network stack randomness in OpenBSD.

• O'Reilly Euro OSCON 2006 , Sep 20, 2006, Brussels, Belgium.
  There was an OpenBSD and OpenSSH booth.

• Come 2 Linux 2006 , Sep 9 - 10, 2006, Duisburg-Essen, Germany.
  There was an OpenBSD and OpenSSH booth.

• mrmcd101b - MetaRheinMainChaosDays Darmstadt 2006 , Sep 1 - 3, 2006, Darmstadt, Germany.
  There was an OpenBSD and OpenSSH booth.

• LinuxWorld Expo San Francisco 2006 , Aug 16, 2006, San Francisco, USA.
  Ted Unangst spoke about OpenBSD as part of a security panel.

• Portuguese OpenBSD Usergroup Meeting , Jul 22 - 23, 2006, Coimbra, Portugal.
  6th Meeting of the Portuguese OpenBSD Usergroup. Marc Balmer gave a talk "NMEA 0183 and Time Signal Station Receiver Support in OpenBSD".

• Arbeitskreis für Qualität in der Informationstechnologie (Working Group for Quality in IT) , Jul 20, 2006, University of Basel, Computer Science Department, Room 205, Bernoullistr. 16, 17:30 - 18:30, Basel, Switzerland.
  Marc Balmer gave a talk in german "Ensuring Quality in the Development of the Free Operating System OpenBSD".

• Libre Software Meeting 2006 , Jul 4 - 8, 2006, Vandoeuvre-les-nancy, France.
  There was an OpenBSD and OpenSSH booth, run by Wim, Matthieu and Alexandre with the help of Serge and Christelle.

• FrOSCon 2006 - Free and Open Source Software Conference , Jun 24 - 25, 2006, Bonn/Rhein-Sieg, Germany.
  There was an OpenBSD and OpenSSH booth run by Wim, Waldemar, Manuel and Tim Kornau.

• Linuxwochen Linz 2006 , June 15, 2006, Linz, Austria.
  There was an OpenBSD and OpenSSH booth run by Wim and the usual suspects.

• LUGVR@UNIVR , Jun 9, 2006, Verona University, Borgo Roma, Italy.
  Florin Iamandi of LUG Verona gave a talk (English and Italian) and live demonstration on redundant failover OpenBSD firewalls. He explained why OpenBSD solves many problems that had previously been the dominion of expensive commercial solutions. Attendees learned about OpenBSD's hard stance and successful fight against bad licences and uncooperating vendors and manufacturers.

• Slackathon 2006 , Jun 3, 2006, Stockholm, Sweden.
  A fundraiser for OpenBSD/SSH held at the Stockholm University. Free entrance and all donations went straight to the project. Several developers were talking about OpenBSD here, as well as some hands-on workshops took place with both old and new hardware.

• Calgary Unix Users Group , Jun 1, 2006, SAIT Campus, Calgary, Alberta.
  Bob Beck and Reyk Floeter discussed recent and future networking changes in OpenBSD. Some other OpenBSD developers attended to provide international colour, and there were tshirts, CDs, and posters on hand. CUUG made a substantial contribution to OpenBSD at this event as well.

• Linuxwochen Vienna 2006 , May 31 - Jun 2, 2006, Vienna, Austria.
  There was an OpenBSD and OpenSSH booth run by Wim and the usual suspects.

• Provence Linux User Group , May 19, 2006, Marseille, France.
  Alexandre Anriot spoke about the deployment of wireless networks with OpenBSD during a meeting of the PLUG.

• SANE 2006 , May 15 - 19, 2006, Delft, The Netherlands.
  Peter N. M. Hansteen gave a PF tutorial.

• BSDCan 2006 , May 12 - 13, 2006, Ottawa, Canada.
  David Gwynne and Marco Peereboom gave a talk about hardware monitoring with bio and sensors in OpenBSD (slides) and Reyk Flöter talked about the latest wireless support and the incredible plans for the future (slides), and Peter Hansteen gave a PF tutorial. A number of OpenBSD hackers attended the conference as well, like Bob Beck and Mathieu Sauve-Frankel.

• Linuxdays 2006 , May 8 - 12, 2006, Geneva, Switzerland.
  Julien Mabillard, a long-time Geneva OpenBSD user, gave a talk to present the overall system and its great features.

• IDEPES 2006 , May 6, 2006, São Paulo, Brazil.
  First event in Brazil totally dedicated to OpenBSD.

• LinuxTag 2006 , May 3 - 6, 2006, Wiesbaden, Germany.
  OpenBSD was very present at this years Linuxtag:
  • On friday morning, Claudio and Marc moderated a panel discussion "BLOBS sind das Krebsgeschwür freier Software" (Blobs are the cancer of free software) that was well attended. Unfortunately no one in favour of Blobs attended, although we asked almost all Linux distributions...
  • After lunch, Marc Balmer started the afternoon with a talk "OpenBSD as a Strategic Platform for the Basle Public Schools", outlining how and why the Basle Public school system uses OpenBSD for most of its infrastructure.
  • The next OpenBSD specific talk was by Claudio Jeker, "Routing with OpenBSD using OpenOSPFD and OpenBGPD" where he showed various routing setups and how full redundancy can be achieved. [paper]
  • Later, Marc Balmer gave a talk "Decoding Time Signal Stations using OpenBSD" and explained the recent addition of timedelta sensors and the first implementation of such, udcf(4).
  
  All talks where very well received and OpenBSD filled four hours of the Linuxtag program. We thank Wilhelm Bühler, chair of the BSD-Track at Linuxtag, for the superb and professional organization.
  Of course, there was an OpenBSD and OpenSSH booth run by Wim and the usual suspects.

• NYCBUG Monthly meeting , May 3, 2006, NYC, USA.
  Michael Shalayeff gave a talk (slides and audio)) about PAE work for OpenBSD/i386.
  Mischa Diehm gave a talk about implementing VPN using OpenBSD.

• Tokyo PC Users Group , May 2, 2006, Tokyo, Japan.
  Theo presented his "Exploit Mitigation Techniques" talk. There is a map to the location.

• Samba eXPerience 2006 , April 24 - 26, 2006, Göttingen, Germany.
  Marc Balmer gave a talk "Providing Fully Automated Fileserver Services for Public Schools using LDAP Integrated SAMBA on OpenBSD" that was very well received.
  There was an OpenBSD and OpenSSH booth run by Wim and Marc and Felix Kronlage and we could draw a lot of attention.

• DORS / CLUC 2006 , April 19 - 21, 2006, Zagreb, Croatia.
  Mitja Muženič gave a "Introduction to OpenBSD" talk. Conference program (in croatian only).

• LinuxWorld/OpenSolutions World 2006 , April 3 - 6, 2006, Boston, USA.
  Jason Dixon presented Secure Network Architectures with OpenBSD, a talk on OpenBSD that outlines the various technologies that make it a leader of secure networking platforms.
  He spent time around the exposition BSD booth with giveaways and early release OpenBSD 3.9 CDs.

• Cansecwest/core06 , April 3 - 7, 2006, Vancouver, Canada.
  A rather interesting OpenBSD-related talk happened at this event, regarding using SMI interrupts to break out of X into kernel mode.
  Some OpenBSD developers attended. Some early OpenBSD 3.9 items went on sale.

• UKUUG Spring Conference 2006 , Mar 22 - 23, 2006, Durham, United Kingdom.
  Reyk Flöter gave a talk about the latest wireless support in OpenBSD at the annual spring meeting of the UK's Unix and Open Systems User Group. Peter N. M. Hansteen gave a PF tutorial, Tom Cosgrove presented "Exploit Mitigation Techniques" and Constantine Murenin gave a presentation on "Hardware temperature monitoring device drivers for OpenBSD". These were all part of a new, well-attended, BSD stream at the event.

• LinuxForum 2006 , Mar 3 - 4, 2006, Copenhagen, Denmark.
  Wim gave Felix Kronlage's talk about OpenBSD Mobile Use (wifi, UMTS, GPRS, phones and the like) with some demo setups. Henning Brauer gave a very well received talk about OpenBGPD, slides are available.

• FOSDEM Brussels 2006 , Feb 25 - 26, 2006, Brussels, Belgium.
  An OpenBSD/OpenSSH booth was present, run by the usual gang of suspects: Alexandre, Dimitar, Matthieu, Mbalmer, Nikolay, Otto, Reyk, Saad, Thierry, Uwe, Wim, and Xsa. Reyk gave a talk about Wifi with OpenBSD and there was our traditional BSD dinner. More details and pictures on Saad's blog.

• Merciful briefings 2006 , Feb 15, 2006, Las Vegas, USA - Feb 17, 2006, San Diego, USA - Feb 18, 2006, Phoenix, USA.
  While traveling the US, Wim met with a bunch of OpenBSD users in Las Vegas, San Diego and Phoenix. With many thanks to the members of PhxBUG - Phoenix BSD User Group, more specifically Darrin Chandler, for organising the little details and Jacob for road trip directions.

• NANOG 36 , Feb 12 - 15, 2006, Dallas, USA.
  Henning Brauer and Bernhard Kroenung of DE-CIX talked about OpenBGPD and OpenBGPD at DE-CIX, slides are available. Henning talked again at the tools BOF (slides). Both talks were very well received by the audience. Kenjiro Cho was there too, talking about IPv6 issues.

• Solutions Linux 2006 , Jan 31 - Feb 2, 2006, Paris, France.
  There was an OpenBSD booth run by Marc Espie, Miod Vallat, Saad Kadhi and Wim with help from Guillaume Arcas and Christophe Plasschaert.

2005

• 22C3 Chaos Communication Congress in Berlin , December 27 - 30, 2005, Berlin, Germany.
  Many OpenBSD developers and users met for a Xmas break in a unique setting.

• Provence Linux User Group , December 16, 2005, Marseille, France.
  Alexandre Anriot spoke about OpenSSH during a meeting of the PLUG.

• EuroBSDCon 2005 , Nov 25 - 27, 2005, Basel, Switzerland.
  The 4th edition of the european conference for BSD systems has been a great success. More than 225 people from 27 countries attended the event. The program included a tutorial by Reyk about OpenBSD-based Wireless Networks and the following talks
  • Henning Brauer with Wilhelm Bühler "Signal Handlers"
  • Ryan McBride "Network Stack Randomness"
  • Matthieu Herrb and Matthias Hopf "New Evolutions in the X Window System"
  • Claudio Jeker "The Design and Implementation of OpenOSPFD"
  • Niall O'Higgins & Uwe Stuehler "Embedded OpenBSD"
  • Ted Unangst "rthreads: A New Thread Implementation for OpenBSD"

  There was an OpenBSD and OpenSSH booth, run by Wim.

• Linux World Expo Germany , Nov 15 - 17, 2005, Frankfurt, Germany.
  There was an OpenBSD and OpenSSH booth, run by Wim and Bernd.

• PacSec/core 05 conference , Nov 15 - 16, 2005, Tokyo, Japan.
  Sean Comeau presented a talk called Open Source Secure Wireless Networks in a Windows World [PDF]. The solution he presents uses IPsec to protect traffic between the wireless clients and access points. Authentication is done using OpenSSH (authpf), a process made transparent and user-friendly by a few small scripts.

• OpenCON 2005 , Nov 4 - 6, 2005, San Servolo Island, Venice, Italy.
  The only unique conference entirely dedicated to OpenBSD, held in the totally crazy environment of San Servolo island: an old insane asylum turned into a university about 20 years ago, about 10 minutes boat ride from Venice. In the days leading up to this, about 12 OpenBSD developers arrived early for a Ports mini-hackathon. During the conference a few developers gave talks, including
  • Peter Valchev "OpenBSD Hackathon report"
  • Marc Espie "OpenBSD ports and packages"
  • Henning Brauer "OpenBSD networking update"
  • Uwe Stuehler, Niall O'Higgins "Porting OpenBSD"
  • Theo de Raadt "Exploit Mitigation Techniques (updated to include random malloc and mmap)"

• Systems , Oct 24 - 28, 2005, Munich, Germany.
  There was an OpenBSD and OpenSSH booth, run by Wim.

• AUUG 2005 , October 16 - 21, 2005, Sydney, Australia.
  Mark Uemura presented a tutorial on setting up CARP/PF, a demonstration of stateful failover with CARP and pfsync and a talk on wireless security in a corporate environment using authpf and isakmpd. Peter Hansteen gave a Firewalling with PF tutorial. Damien Miller presented on the approach to secure software portability used by portable OpenSSH (PS and PDF), Reyk Flöter gave a talk on the current state of wireless support in OpenBSD and David Purdue introduced OpenBSD's spamd tarpit. Most of the Australian OpenBSD developers and many users were present.

• Les Journées Du Logiciel Libre 2005 , Oct 14 - 15, 2005, Lyon, France.
  There was an OpenBSD and OpenSSH booth, run by Alexandre Anriot with the help of Thierry Thomas.

• CaFeConf 2005, 4tas Jornadas Abiertas de GNU/Linux y Software Libre , Oct 13 - 15, 2005, Buenos Aires, Argentina.
  CaFeConf 2005 is the annual event of CaFeLUG - Free Software Users Group of Capital Federal, Argentina. This year the event featured 116 presentations consisting of talks, tutorials, and workshops. The event was also broadcast on the Internet. Entrance was free, but registration was mandatory.
  Fernando Gont gave a talk on ICMP attacks against TCP, in which he gave an overview of the attacks, the possible counter-measures, and the politics of vulnerabilities, and a talk on Fixing the vulnerability of the Path-MTU Discovery mechanism, in which explained how OpenBSD fixed the vulnerability of the PMTUD mechanism.

• 12th International Linux System Technology Conference , Oct 11 - 14, 2005, University of Hamburg, Germany.
  There was an OpenBSD and OpenSSH booth.

• LinuxWorld Expo UK 2005 , Oct 5 - 6, 2005, Olympia, London, UK.
  There was an OpenBSD and OpenSSH booth.

• OpenSourceTag 2005 , Sep 27, 2005, Hannover, Germany.
  There was an OpenBSD and OpenSSH booth and Reyk gave a talk about IT security.

• Greater Utah BSD Group Installfest 2005 , Sep 24, 2005, Sandy, UT, USA.
  The Greater Utah BSD User Group organised their first annual BSD Installfest, sponsored by Utah ISP ArosNet. There were handouts, CD-ROMs, technical presentations, and fun, plus a chance to get OpenBSD or a related open source BSD operating system installed on your computer. Admission was free (computers not included in cost of admission). Featured speakers included Dan Langille, organizer of BSDCan.

• New York City BSD Conference 2005 , Sep 17, 2005, NYC, USA.
  NYCBSDCon was a one day technical conference hosted by the New York City *BSD User Group and was held at Columbia University. The all day conference included a variety of speakers representing the BSD projects and the open source community.
  NYCBSDCon was organized by NYC*BUG, a technical user group that formed in December 2003. Besides their regular monthly meetings at the Soho Apple Store, NYC*BUG has done fundraising for the BSD projects and contributed a number of useful online applications such as BSDTracker and dmesgd.
  Additional sponsors included USENIX, New York Internet and SRA America.

• OpenSaar 2005 , Sep 13 - 14, 2005, Saarbrücken, Germany.
  An OpenBSD and OpenSSH booth was present.

• DE-CIX Technical Meeting , Sep 16, 2005, Schloss Kransberg, near Usingen, Germany.
  Henning Brauer, Reyk Flöter and Maxim Salomon had been invited to the technical meeting of the Deutsche Commercial Internet Exchange (DE-CIX) again. Henning gave an update on OpenBGPD, Reyk talked about a route server project using OpenBGPD at DE-CIX, and Maxim explained why the CCC sponsors us doing so. There was a very positive discussion afterwards. Slides are available.

• UKUUG Linux Technical Conference 2005 , Aug 4 - 7, 2005, University of Wales, Swansea, UK.
  Tom Cosgrove gave Theo's presentation about Exploit Mitigation Techniques.

• What the Hack 2005 , Jul 28 - 31, 2005, Den Bosch, The Netherlands.
  As every 4 years, Wim organized the BSD village at this huge open air event. There were some talks, Reyk spoke about WLAN in OpenBSD, and an excellent Humppa show (35MB MP3) was performed on the SubEther radio. If you want to see what happened previously, check http://eurobsd.org/hal2001/ and http://www.eurobsd.org/SummerCamp2003/.

• Portuguese OpenBSD Usergroup Meeting , Jul 23 - 24, 2005, Coimbra, Portugal.
  5th Meeting of the Portuguese OpenBSD Usergroup. Pedro Martelletto gave a talk.

• Libre Software Meeting 2005 , Jul 5 - 9, 2005, Dijon, France.
  There was an OpenBSD and OpenSSH booth, run by Wim and the usual suspects, with the help of Serge Basterot. It was a nice place to meet some of our French, German and Swiss developers, including Marc Balmer, Alexandre Anriot, Matthieu Herrb and Reyk Floeter.

• LinuxTag 2005 , Jun 22 - 25, 2005, Karlsruhe, Germany.
  There was an OpenBSD and OpenSSH booth run by Wim, Christian Weisgerber, Marc Balmer, Wilhelm Buehler, Robert Nagy, Bernd Ahlers and Phil Schulz.

• University of Alberta, Campus Computing 2005 , Jun 21, 2005, Edmonton, Canada.
  Ryan McBride spoke about OpenBSD's packet filter, PF, with CARP and failover examples. Local color and examples at the U of A shown by Bob Beck. Bob Beck spoke about PF and Spamd, as well as several other OpenBSD using and related talks at this event, which primarily focuses on activities centered at the University of Alberta.

• Tokyo PC Users Group , Jun 2, 2005, Tokyo Union Church in Omotesando, Tokyo, Japan.
  Mark T. Uemura spoke to Japan's largest English speaking personal computer club. The talk was entitled "Open Source in a Windows World". He demonstrated how companies can easily integrate Open Source, with an emphasis on OpenBSD, into their IT infrastructure to enhance security, scalability and stability, significantly reduce IT expenditures, free up computing infrastructure and move away from commercial lock-in. This talk is based on changes implemented at PricewaterhouseCoopers in Japan.

• Linuxwochen Vienna 2005 , May 24 - 27, 2005, Vienna, Austria.
  The Linuxwochen 2005 tour stopped in the MuseumsQuartier, Vienna. Wim Vandeputte and Reinhard Sammer were running an OpenBSD booth selling CDs and shirts.

• Calgary Unix Users Group , May 24, 2005, Calgary, Canada.
  Ryan McBride spoke about OpenBSD's packet filter, PF. A broad overview of PF's features were presented, with special attention paid to newer and more unique features and how these can be used together effectively for DoS mitigation, high availability, and load balancing.
  Approximately 60 OpenBSD developers attended to heckle and participate in a free-for-all question period after the talk.

• BSDCan 2005 , May 13 - 14, 2005, Ottawa, Canada.
  A number of OpenBSD developers presented: Bob Beck on Spam Reduction with PF and Spamd, Henning Brauer on OpenBGPD, Ryan McBride on Network Stack Randomness and Reyk Flöter on WLAN in OpenBSD and the free ath(4) HAL. The Spamd and WLAN slides are available. Mathieu Sauve-Frankel has been there in attendance as well.

• cansecwest/core05 , May 4 - 6, 2005, Vancouver, Canada.
  Hiroaki Etoh spoke about propolice; Theo de Raadt and a number of other developers were there to sell CDs and make a nuisance of themselves.

• RIPE 50 , May 2 - 6, 2005, Stockholm, Sweden.
  RIPE NCC invited Henning to talk about OpenBGPD. There were over 350 attendees to the conference, and most of them attended henning's talk, which got very very positive feedback.

• Libr'east 2005 , Apr 22 - 24, Marne La Vallée, near Paris, France.
  There was an OpenBSD booth (Wim + Miod + Marc) Marc Espie did talk about recent OpenBSD advances, and his ports and packages work in front of about 30 people.

• DE-CIX Technical Meeting , Apr 15, 2005, near Usingen, Germany.
  Henning Brauer and Reyk Flöter had been invited to the technical meeting of the Deutsche Commercial Internet Exchange (DE-CIX). Henning presented his talk on OpenBGPD, about 60 people, mostly operators from the big ISPs peering at DECIX, were in attendance. Reyk, Maxim Salomon and Tim Kornau spoke on Wireless Network Security.

• Firewalling with PF at NUUG , Apr 14, 2005, Oslo, Norway.
  Peter N. M. Hansteen gave a firewalling with PF talk - which hopefully gave you some ideas about how to control your network traffic the way you want - keeping some things outside your network, directing traffic to specified hosts or services, and of course, giving spammers a hard time. The talk was in Norwegian, with foils and manuscript (English foils and manuscript too) available if you couldn't make it there.

• FH Wedel invited talk , Apr 13, 2005, 17:00, Hörsaal 5, FH Wedel, Hamburg, Germany.
  Henning Brauer spoke on OpenBGPD. More than 40 people were in attendance.

• Usenix Annual Technical Conference , Apr 10-15, 2005, Anaheim, California, USA.
  Marius Eriksen gave the OpenBSD update at the BSD super BoF. The update was well received and people were quite sympathetic towards the ongoing efforts of the OpenBSD project to ensure the free redistribution rights for firmware. People were also excited about the new Open* tools (OpenBGPD, OpenNTPD, OpenCVS) and it would not be surprising to see more of these imported into other BSDs.

• Provence Linux User Group , April 8, 2005, Marseille, France.
  Alexandre Anriot spoke about OpenBSD and some associated projects (OpenBGPD etc.) during a meeting of the PLUG. The slides (in French) are available.

• Bellua Cyber Security Asia 2005 , Mar 21 - 24, 2005, Jakarta, Indonesia.
  Ryan McBride presented an overview of PF which discussed how its advanced features work together in some important applications and compared PF with the other major commercial and open source firewalls.

• NUI Maynooth lectures , Mar 4, 2005, Department of Computer Science, NUI Maynooth, Dublin, Ireland.
  Ryan McBride presented talks about PF and about randomization in the OpenBSD network layer.
  Theo and Henning were in attendance because someone had to heckle.

• Trinity lecture , Mar 3, 2005, Trinity College, Dublin, Ireland.
  Theo de Raadt presented his talk about Exploit Mitigation Techniques.

• ShefLUG2005 , Mar 2, 2005, Sheffield, UK.
  Jacek Artymiak gave a talk about installing OpenBSD on Soekris hardware.

• NYCBUG Monthly meeting , Mar 2, 2005, NYC, USA.
  Michael Shalayeff gave a talk (slides and 10.5MB audio) about porting OpenBSD to the HP PA-RISC platform.

• Netsoc lectures , Mar 2, 2005, UCD, Dublin, Ireland.
  Theo de Raadt, Henning Brauer, and Ryan McBride gave a series of talks. Topics included exploit mitigation techniques, introducing network randomness to increase security, OpenBGPD, and pf. Almost 200 people came to this event.

• FOSDEM Brussels 2005 , Feb 26 - 27, 2005, Brussels, Belgium.
  An OpenBSD/OpenSSH booth was present, run by the usual gang of suspects. Support for Wim Vandeputte this time were (among many others), Saad Kadhi, Henning Brauer, Thierry Deval, Otto Moerbeek, Xavier Santolaria, Martin Reindl, Reyk Flöter, Hans-Jörg Höxer, Nikolay Sturm, Marc Balmer, Claudio Jeker, Joris Vink, Olivier Cherrier, David Berghoff, Alexander von Gernler, Uwe Stuehler, and Felix Kronlage from OpenDarwin.
  There was a separate OpenBSD track, featuring Henning Brauer (about signal handlers and OpenNTPD), Reyk Flöter (about wireless cards in OpenBSD), and the author of the OpenBSD PF book, Jacek Artymiak (about pf(4), of course).
  At the conference's Free Software Foundation Event, Theo de Raadt was awarded the Free Software Award 2004 for his efforts to make Firmware for wireless hardware and other devices freely available.

• UKUUG LISA/Winter Conference , Feb 24 - 25, 2005, Birmingham, UK.
  Henning Brauer spoke on OpenBGPD, OpenNTPD and Signal Handlers.

• GUUG FFG 2005 , Feb 22 - 25, 2005, Munich, Germany.
  Reyk Flöter talked about the latest wireless support in OpenBSD at the annual spring meeting of the German Unix User Group.

• Solutions Linux 2005 , Feb 1 - 3, 2005, Paris, France.
  An OpenBSD booth as well as an OpenSSH booth were present. These booths were run by Marc Espie, Miod Vallat, Saad Kadhi and Wim with help from Guillaume Arcas and Christophe Plasschaert, two members of the OpenBSD french translation team.
  Marc Espie and Saad Kadhi gave a talk about the OpenBSD project with a special focus on the ports collection and Packet Filter. The slides (in French) are available.
  During the event, several demonstrations of Soekris machines running OpenBSD were given by Saad Kadhi and Wim.

2004

• 21C3 - Chaos Communication Congress , Dec 27 - 29, 2004, Berlin, Germany.
  "The Usual Suspects" were there and ran the BSD corner, including Wim, Henning Brauer, Marc Balmer, Martin Reindl, Moritz Jodeit, Felix Kronlage, Uwe Stuehler, Konrad Foerstner, Bernd Ahlers, and Alexander von Gernler.
  Henning gave a talk about OpenBGPD and OpenNTPD (slides).
  The WiFi backbone ran on OpenBSD powered Soekris machines as access points, work done by Reyk Flöter, Tim Kornau and others. This installation was a very successful test of the new ath(4) driver.

• ICOS 2004 , Dec 18 - 19, 2004, Taipei, Taiwan.
  Kevin Lo gave a presentation.

• SyScAN 2004 , Dec 16 - 17, 2004, Singapore, Singapore.
  Theo de Raadt presented his talk about Exploit Mitigation Techniques.

• SUR Group Meeting, December 2004 , Dec 14, 2004, Paris, France.
  Saad Kadhi gave a talk about OpenBSD and security during the monthly meeting of the SUR Group (Sécurité Unix et Réseaux), a french user group focusing on security and Unix. The slides (in French) are available.

• OpenCon 2004 , Dec 10 - 12, 2004, Venice, Italy.
  OpenBSD meeting in Northern Italy. Henning gave 3 talks in two days, on bgpd (slides), ntpd (slides) and signal handlers (slides). Wim ran a booth, and Marc Balmer was there as well.

• U of A Seminar , Nov 17 - 18, 2004, Edmonton Alberta.
  Theo de Raadt presented a talk at an open seminar at the University of Alberta, in Room B-02 of the Computing Sciences Center. Talk went from 2 PM to nearly 5PM with more than 100 people attending from the University and industry, followed by beer nearby. The talk was also given the following day at the CIPS Security SIG luncheon.

• EuroBSD Con , Oct 29 - 31, 2004, Karlsruhe, Germany.
  There was an OpenBSD and OpenSSH booth, run by Wim. Henning gave a talk about bgpd, slides are available.

• Linux World Expo , Oct 26 - 28, 2004, Frankfurt, Germany.
  There was an OpenBSD and OpenSSH booth, run by Wim.

• Calgary Unix Users's Group , Oct 26, 2004, Calgary, Canada.
  Theo presented the talk that he has recently given in Australia and Malaysia to the "Home Crowd".

• Les Journées Du Logiciel Libre 2004 , Oct 22 - 23, 2004, Lyon, France.
  There was an OpenBSD and OpenSSH booth, run by Miod Vallat with the help of Alexandre Anriot and Thierry Thomas.

• Systems , Oct 18 - 22, 2004, Munich, Germany.
  There was an OpenBSD and OpenSSH booth, run by Wim.

• Linux Expo , Oct 6 - 7, 2004, London, UK.
  There was an OpenBSD and OpenSSH booth, run by Wim.

• Hack in the Box Security Conference 2004 , Oct 4 - 7, 2004, Kuala Lumpur, Malaysia.
  Theo de Raadt presented an updated version of his "Exploit Mitigation Techniques" talk.

• SANE 2004 , Sep 29, 2004, Amsterdam, Netherlands.
  There was an OpenBSD and OpenSSH booth, run by Wim.

• Linux Kongress 2004 , Sep 7 - 10, 2004, Erlangen, Germany.
  From their website: "Linux-Kongress is still the premier event for European developers and one of the most important in the world. Each year hundreds of hard core Linux enthusiasts from all over the world gather for this important event."
  Although this was a Linux developers' conference, we were able to install a regular OpenBSD booth there, as known from other events. It was run by Wim Vandeputte, Alexander von Gernler and other geeks from the Erlangen-Nuremberg area.
  There also was a BSD dinner at Friday evening.

• SUCON 2004 , Sep 2 - 4, 2004, Zurich, Switzerland.
  There was an OpenBSD and OpenSSH booth. Very nice conference. Henning's slides from his talks about bgpd and ntpd are available.

• AUUG 2004 , Aug 29 - Sep 3, 2004, Melbourne, Australia.
  Theo de Raadt presented a half-day tutorial on privilege separation and a newly extended version of the Exploit Mitigation Techniques talk.
  For more information, see this ComputerWorld article.

• Libre Software Meeting , Jul 6 - 10, 2004, Bordeaux, France.
  There was an OpenBSD and OpenSSH booth, run by Wim Vandeputte.

• LinuxTag 2004 , Jun 23 - 26, 2004, Karlsruhe, Germany.
  There was an OpenBSD and OpenSSH booth, run by Wim Vandeputte.

• Linuxwochen Vienna 2004 , May 26 - 29, 2004, Vienna, Austria.
  The Linuxwochen 2004 tour stopped in the MuseumsQuartier, Vienna. Wim Vandeputte and Reinhard Sammer ran the OpenBSD booth. Michael Bauer and Teemu Schaabl from the CNGW gave a basic talk about pf.

• BSDCan 2004 , May 13 - 16, 2004, Ottawa, Canada.
  BSDCan was held at the University of Ottawa. Ryan McBride gave a talk about newer features in pf, focusing on the redundancy provided by CARP and pfsync. Theo de Raadt presented a revised version of his talk on Exploit Mitigation Techniques.

• 3rd Linux and Open Source Festival , May 13 - 16, 2004, Ankara, Turkey.
  Can E. Acar and Berk D. Demir talked about the OpenBSD Project. The philosophy, project goals, system features and recent proactive security features were introduced. CARP, patents, recent Apache & XFree86 licensing issues and effects of NDAs in open source projects were discussed.
  You can view the slides in PDF format the LaTeX source is also available (they are mirrored, as well).

• FOSDEM Brussels 2004 , Feb 21 - 22, 2004, Brussels, Belgium.
  An OpenBSD/OpenSSH booth was present, run by Wim Vandeputte. Several developers (including Henning Brauer, Xavier Santolaria, Thierry Deval, Philipp Bühler, Otto Moerbeek and Saad Kadhi) showed up. Wim and Alexander von Gernler gave "lightning talks" about Soekris and systrace (slides), respectively. Henning got a slot in the main track to talk about the new bgpd (slides). On Saturday evening, the traditional OpenBSD dinner took place.

• Linux Expo Paris 2004 , Feb 3 - 5, 2004, Paris, France.
  An OpenBSD booth as well as an OpenSSH booth were present, thanks to Saad Kadhi and Wim.

• LinuxWorld Conference and Expo , Jan 20 - 23, 2004, New York, NY, USA.
  Wes Sonnenreich and others have established a BSD user group in NYC and held a BSD BoF at the Jacob Javits Center on January 22nd at 5:45pm, Room 1E15.

2003

• 20th Chaos Communication Congress 2003 , Dec 27 - 29, 2003, Berlin, Germany.
  OpenBSD was represented by a booth, ran by Wim, and supported by Henning and Alexander von Gernler. Alexander also gave a talk introducing the project and the OS (in German).

• 1st BSDCon Brazil , Dec 6 - 7, 2003, Rio de Janeiro, Brazil.
  This was the first BSDCon Brazil, and of course OpenBSD was present. Douglas Santos spoke on advocacy and about some of the technical aspects of OpenBSD. Eduardo A. Alvarenga gave a presentation about firewalling with OpenBSD PF.

• Turkish Linux Users Association , Dec 4, 2003, Ankara, Turkey.
  Can E. Acar and Berk D. Demir gave a mammoth 4 hour presentation on OpenBSD. The first part was a broad introduction to the OpenBSD philosophy, the project goals, and system features. After a break, in the second part they talked about the exploit mitigation techniques employed in OpenBSD. This part was aimed at techies and is almost a complete Turkish translation of the talk Theo recently gave in Japan. You can view the slides in PDF format (they are mirrored, as well).

• Linuxday Luxembourg 2003 , Nov 6 - 8, 2003, Luxembourg, Luxembourg.
  Booths were present, organized by Wim.

• Pacsec 2003 , Nov 6 - 7, 2003, Tokyo, Japan.
  Three OpenBSD developers presented on various topics. Theo de Raadt gave a presentation on Exploit Mitigation Techniques (English) (Japanese), Jun-ichiro itojun Hagino presented material covering IPv6 security considerations, and Jose Nazario discussed advances in Internet worm defenses.

• Les V^èmes Journées du Libre 2003 , Oct 31 - Nov 1, 2003, Lyon, France.
  Miod Vallat gave a talk about the recent security efforts deployed in OpenBSD, as well as generic security concepts (slides, in bad French, are available in mgp format). As usual, Wim ran an OpenBSD booth featuring the new 3.4 release, as well as Soekris hardware running OpenBSD.

• Linux Kongress Saarbrücken 2003 , Oct 14 - 16, 2003, Saarbrücken, Germany.
  An OpenBSD booth was present, starring Wim again.

• Linux Expo London 2003 , Oct 8 - 9, 2003, London, UK.
  An OpenBSD booth was present, starring Wim as usual.

• BSDCon '03 , Sep 8 - 12, 2003, San Mateo, California.
  OpenBSD was represented in the BSD Status Report, and David Rosenthal gave a talk on an OpenBSD based security appliance.

• SUCON '03 , Sep 5, 2003, Zurich, Switzerland.
  Daniel Hartmeier talked about PF, and pictures are available.

• Chaos Communication Camp 2003 , Aug 7 - 10, 2003, in a field near Berlin, Germany.
  There was a huge OpenBSD village. Several OpenBSD developers have been there.

• Usenix Security , Aug 4 - 8, 2003, Washington, DC, USA.
  Niels Provos presented two papers on security advances originally developed for OpenBSD, including the OpenSSH privsep feature and systrace. Several OpenBSD developers were there.

• LinuxTag 2003 , Jul 10 - 13, 2003, Karlsruhe Convention Center, Germany.
  Both OpenBSD and OpenSSH had booths in the main exhibit.

• Libre Software Meeting 2003 , Jul 9 - 12, 2003, Metz, France.
  Matthieu Herrb gave a talk about XFree86 security. There was also an OpenBSD booth with developers.

• Linux User & Developer Expo 2003 , Jun 24 - 26, 2003, at the NEC in Birmingham, UK.
  There was an OpenBSD booth with developers.

• Usenix Annual Technical Conference , Jun 9 - 14, 2003, San Antonio, Texas, USA.
  A few OpenBSD developers were there and one paper was presented:
  • The Design of the OpenBSD Cryptographic Framework
    Usenix 2003, by Angelos D. Keromytis, Jason L. Wright, and Theo de Raadt.
    paper.

• Webbit 2003 , May 9 - 11, 2003, Padova, Italy.
  Giacomo Cariello and Wim Vandeputte attended, and several OpenBSD related talks were given.

• CanSecWest 03 , Apr 9 - 11, 2003, Vancouver, Canada.
  Theo spoke about killing buffer overflows using ProPolice and the new W^X technology, also available as a magicpoint file.

• CeBIT 2003 , Mar 14, 2003, Hannover, Germany.
  You could have found our booth in Halle 6, A53/068. Friday, Henning and Markus gave a talk on OpenBSD and OpenSSH. slides are available.

• LinuxForum 2003 , Mar 1, 2003, Copenhagen, Denmark.
  Daniel spoke about PF (slides in mgp, HTML). It was a small but cozy conference, jointly held by Danish Linux and BSD user groups.

• CUUG - The Calgary Unix Users Group , Feb 25, 2003, 18:00 MST, Calgary, Canada.
  OpenBSD lead developer Theo de Raadt spoke about some of the recent changes in OpenBSD that are leading the way to the complete elimination of "buffer overflow" security risks and attacks.

• FOSDEM 2003 , Feb 8 - 9, 2003, Brussels, Belgium.
  Henning and Philipp gave a talk on -current PF developments (slides) and on Saturday evening, there was an OpenBSD dinner for those interested.

• Linux Solutions , Feb 4 - 6, 2003, CNIT - Paris La Défense, France.
  There was an OpenBSD booth with several OpenBSD developers, as well as 3.2 OpenBSD CD sets and T-shirts.

2002

• 19c3: the 19th CCC Congress , Dec 27 - 29, 2002, Berlin, Germany.
  There was a huge reserved space for OpenBSD users and developers, a couple of -current test systems and for those curious, a first look at the 3.2 OpenBSD T-shirts.

• BSDCon Europe 2002 , Nov 15 - 17, 2002, Amsterdam, Netherlands.
  OpenBSD people were there; Philipp Bühler and Henning Brauer spoke about network performance tuning on OpenBSD, and Ian Darwin presented a tutorial on OpenBSD servers/firewalls.

• LISA '02: 16th Systems Administration Conference , Nov 3 - 8, 2002, Philadelphia, USA.
  Mickey and Jason manned the booth at the vendor expo (the only BSD represented) and sold 3.2 CDs, and Jason gave a BoF session on 3.2 and future.

• Australian Unix Users Group Winter Conference , Sep 1 - 6, 2002, Melbourne, Australia.
  Damien Miller presented a tutorial on the SSH protocol and OpenSSH tips and tricks. (postscript)

• The 3rd Libre Software Meeting , Jul 9 - 13, 2002, Bordeaux, France.
  Several OpenBSD developers and users were attending the meeting, and Niels Provos presented his systrace system call policy management tool.

• Webb.it 02 , Jul 5 - 7, 2002, Padova, Italy.
  OpenBSD developers had a booth selling CD's, T-shirts, etc.

• The Annual International Free Software Forum , May 2 - 4, 2002, Porto Alegre-RS, Brazil.
  Mainly a Linux/GNU event, but this year the BSD Operating Systems had a chance to prove their value. Edson Brandi spoke on FreeBSD, Diego Linke on NetBSD, and Ricardo Nascimento Ferreira on OpenBSD.

• BSDCON 2002 , Feb 11 - 14, 2002, San Francisco, California, USA.
  Todd Miller gave an update on current OpenBSD status and participated in a BSD panel discussion. The slides are available.

• Linux expo Paris 2002 , Jan 30 - Feb 1, 2002, Paris, France.
  The French Linux Expo 2002 was quite small and as usual the OpenBSD booth ended up with others on the expo's side. On the first day, almost all the merchandise was sold, and we even sold older versions (2.9) the following days to people who wouldn't leave without a CD set in their hands...

• MUSESS 2002 , Jan 25 - 26, 2002, McMaster University, Ontario, Canada.
  Louis Bertrand gave a presentation on OpenBSD titled Fix The Bugs, Secure The System. The slides are available.

2001

• USENIX LISA 2001 , Dec 2 - 7, 2001, San Diego, California, USA.
  Niels Provos gave a presentation, and there's been a booth selling T-shirts and 3.0 CDs.

• 52nd IETF , Dec 9 - 14, 2001, Salt Lake City, Utah, USA.
  Angelos, Itojun & Jakob were there.

• DISC 2001 , Nov 26 - 29, 2001, Mexico City, Mexico.
  Once again, Theo de Raadt explained the security auditing process and subsequent secure configuration choices made in OpenBSD, in a talk entitled "Updated thoughts on writing a secure Operating System".

• LinuxCafe , Sep 15, 2001, Hong Kong, China.
  Shell Hung gave an introduction for BSD and demonstration of OpenBSD to HKLUG.

• VPN Bakeoff, Aug 13 - 18, 2001, Finland.
  Jakob and Itojun were there.

• HAL 2001 , Aug 10 - 12, 2001, Twente, Netherlands.
  Quite a lot of developers were there, we even had our own tent. Niels, Rees and Dugsong held talks, more info on the main website for HAL2001. And of course T-Shirts and CDROMs were sold.

• O'Reilly Open Source Conference , Jul 23 - 27, 2001, San Diego, California, USA.
  OpenBSD had a booth selling CD's, T-shirts, etc. Ian Darwin presented his "Firewalls and Secure Internet Servers with OpenBSD" tutorial.

• DEF CON Nine , Jul 13 - 15, 2001, Las Vegas, USA.
  OpenBSD developers and users make it a point to attend every year, and had a table selling CD's, shirts, etc.

• Software Exhibition of Korea , Jun 26 - 29, 2001, Seoul, Korea.
  urisecure/NDS sponsored an OpenBSD booth with CD's, posters, and a live demo of OpenBSD's IPSEC hardware acceleration.

• 2001 USENIX Annual Technical Conference , Jun 25 - 30, 2001, Boston, USA.
  OpenBSD developers were there, selling CD's, T-shirts, etc.

• Information Security OlymFair , May 16 - 18, 2001, Seoul, Korea.
  Dug Song gave a detailed introduction to OpenBSD to the Korean security community.

• 2001 Open Source and Free Software Developers' Meeting , Feb 3 - 4, 2001, Brussels, Belgium.
  There was an OpenBSD booth with some informal talks given.

• 2001 Linux Expo , Feb 1 - 2, 2001, Paris, France.
  There was an OpenBSD booth in the 'F' area.

2000

• LISA 2000, USENIX Systems Administration Conference , Dec 3 - 8, 2000, New Orleans, USA.
  Wim Vandeputte and other volunteers have been running a sales table with shirts, posters and the brand new 2.8 CDs.

• DISC 2000 , Nov 26 - Dec 1, 2000, Mexico City, Mexico.
  Theo de Raadt explained the security auditing process and subsequent secure configuration choices made in OpenBSD, in a talk entitled "Secure by Default". Over the next few days, he also participated in two panels with various security experts who had flown in from around the world. Following this, Theo climbed one of the largest volcanoes, called Malinche.

• NLUUG Najaarsconferentie 2000 , Nov 9, 2000, Ede, Netherlands.
  There was an OpenBSD booth where people dropped by for information or to get their T-shirts, polos, caps and 2.7 CDs.

• IPsec 2000 Global Summit , Oct 24 - 27, 2000, Paris La Defense, France.
  Niels Provos ended the conference by speaking about the IPsec architecture in OpenBSD. The talk was well received and many people were very interested about our cryptographic hardware acceleration.
  • The IPsec Architecture in OpenBSD
    IPsec 2000 Global Summit by Niels Provos.
    slides.

• ApacheCon Europa 2000 , Oct 23 - 25, 2000, London, UK.
  There was an OpenBSD booth where people could drop by for information and a chat with the local OpenBSD personnel. We also had the essentials for your wardrobe (T-shirts, polos, caps), for your hardware (2.7 CDs) and for your mind (drinks afterwards).

• BSD Con 2000 , Oct 18 - 20, 2000, Monterey, CA, USA.
  David Terrell ran an OpenBSD booth selling T-shirts and CDs and answering questions.

• The Open Source Revolution , Oct 5, 2000, Stockholm, Sweden.
  Theo de Raadt spoke about how user expectations for security out of the box have changed over the last years.

• Usenix Security , Aug 14 - 17, 2000, Denver, Colorado, USA.
  Some OpenBSD developers were there and one paper was presented:
  • Encrypting Virtual Memory
    Usenix Security 2000 by Niels Provos.
    paper, PDF and slides.

• Defcon 2000 , Jul 28 - 30, 2000, Las Vegas, Nevada, USA.
  Kjell Wooding (our IPF maintainer), James Phillips from the OpenBSD Journal, and Theo de Raadt had a table and were selling OpenBSD CDROMs, T-shirts, and posters on Friday and Saturday. Hordes of people visited our table and we at the end we were completely sold out of CDROMS and shirts (allowing us to go check out Hoover Dam's hardhat tour on Sunday and leave the madness behind).
  We were completely amazed at the people who stopped by our table, to say that they were relying on OpenBSD.

• O'Reilly Open Source Conference 2000 , Jul 17 - 20, 2000, Monterey, California, USA.
  Ian Darwin presented a tutorial on Secure Internet Servers/Firewalls with OpenBSD, and bravely manned the OpenBSD booth for the remainder of the show. Kjell Wooding took part in a panel discussion on the Future of the BSDs, and spoke about Secure By Default. Both sessions were well attended, and at least one Linux sysadmin was seen racing for a keyboard, scared look in his eyes, after the security talk.

• LinuxTag 2000 , Jun 29 - Jul 2, 2000, Stuttgart, Germany.
  There was a BSD booth where we had the first OpenBSD 2.7 CDs for Europe and the new blue stitchwork Blowfish Polo shirt.
  Christian Weisgerber gave a talk on BSD.

• Usenix Annual Technical Conference. , Jun 18 - 23, 2000, San Diego, California, USA.
  Almost 20 OpenBSD developers showed up for the 25th anniversary of Usenix. We had a vendor booth, as well as a number of papers being presented. Conference attendees had the opportunity to test drive the new release, OpenBSD 2.7, on the 30 workstations in the terminal room. For the first time ever, the terminal room and wavelan networks also had a IPv6 connection, and some users even discovered so by themselves. Theo also held a BoF on the Wednesday evening, after which the developers had almost too much singing in foreign languages with the help of helium.
  • Implementing Internet Key Exchange, IKE.
    Usenix 2000 by Angelos D. Keromytis, Niklas Hallqvist.
    paper and slides.
  • Transparent Network Security Policy Enforcement.
    Usenix 2000 by Angelos D. Keromytis, Jason L. Wright.
    paper, PDF and slides.
  • Safety Checking of Kernel Extensions.
    Usenix 2000 by Craig Metz.

• OpenBSD: The Open Source Secure Operating System , Jun 17, 2000, 14:00, Manchester, UK.
  Sam Smith gave a rundown of features coming in OpenBSD 2.7 and OpenSSH 2.1. His slides are available from the user group's site.

• OpenBSD Crypto 2000 conference , Jun 15 - 20, 2000, Calgary, AB, Canada.
  Repeating the tradition of a similar meeting held last year, many OpenBSD developers from around the world converged on Calgary for a weekend long hack-and-drink session. As before, the event was invitation only. Many significant things got done, including ipv6 + ipsec running over hardware crypto devices.

• CONVERGENCE 2000 , May 18, 2000, Convention Centre, Calgary, Alberta, Canada.
  Theo de Raadt participated in a panel discussion about the pros and cons of using Open Source software in various business environments. The local users also handed out OpenSSH and OpenBSD posters, and were absolutely surprised and amazed by the number of Calgary companies quietly using OpenBSD.

• CanSecWest , May 10 - 12, 2000, Robson Conference Centre, Vancouver, BC, Canada.
  Theo de Raadt spoke about why programmers keep making the same stupid mistakes, what types of efforts might improve this, and how this all relates to auditing efforts. Rain Forest Puppy, Ron Gula (Network Security Wizards), Ken Williams (E&Y), Marty Roesch (snort/HiverWorld), and Fyodor (nmap) were among the other speakers at this event. (On a personal note: at this conference Theo realized that three leading Network Intrusion Detection System companies use OpenBSD as their base operating system: Hiverworld, Network Security Wizards, and NFR).

• Linux Business Expo / COMDEX Spring 2000 , Apr 19, 2000, Chicago, IL, USA.
  Louis Bertrand represented OpenBSD at a BSD BOF with FreeBSD/BDSI, NetBSD and Apple (Darwin is BSD-derived). The BOF was attended by about 75 people, many of whom were new to *BSD. It was an opportunity to explore future cooperation among the various BSD groups and companies.

• NordU 2000 -- The second EurOpen/USENIX Conference , Feb 8 - 11, 2000, Malmo, Sweden.
  About 15 OpenBSD team members attended. OpenBSD CDs and shirts were sold at a booth donated by the conference.
  As well, Theo de Raadt gave an invited talk on Wednesday morning about why software quality/security suffers, and what we can do to improve it.

• BSD BOF session, LinuxWorld Expo, Feb 3, 2000, New York, USA.
  Representatives from OpenBSD, BSDi, and FreeBSD hosted a "Birds Of a Feather" session at the New York LinuxWorld Expo.
  There were installation CD-ROMs, free food, and even free Daemon Horns!

1999

• The Bazaar, Dec 14 - 16, 1999, New York, New York, USA.
  Wes Sonnenreich and Tom Yates presented a tutorial on building firewalls with OpenBSD. BoF of open source BSDs took place. 2.6 release CDROMs and T-shirts were sold. Emphatic interest has been shown by representatives from press, international government and military institutions.

• 13th Systems Administration Conference (LISA 99) , Nov 7 - 12, 1999, Seattle, Washington, USA.
  Bob Beck presented a paper about the U of A's nifty OpenBSD based solution to the problem of public Ethernet jacks in the technical sessions starting at 11:00 AM on the 11th.
  There were many other OpenBSD people at this conference as well, as well as a booth selling CDROMs and T-shirts. His paper is available at:
  • Dealing with Public Ethernet Jacks-Switches, Gateways, and Authentication.
    LISA 1999, by Bob Beck.
    paper, PDF and slides.

• IP-dagarna 1999, Oct 27 - 28, 1999, Stockholm, Sweden.
  Håkan Olsson & Jakob Schlyter spoke at the DNSSEC session on the 27th.

• Linux & Open Source Software '99 , Oct 21, 1999, Stockholm, Sweden. (in swedish)
  Niklas Hallqvist spoke on the topic of how to use IPsec for securing communications.

• Reflections/Projections 1999 , Oct 8 - 10, 1999, Champaign-Urbana, Illinois, USA.
  Theo de Raadt spoke at 10:00am on the 9th. Other OpenBSD developers from the east coast attended as well.

• IPsec Interoperability tests, Sep 27 - 30, 1999, Stockholm, Sweden. (in swedish)
  A dozen vendors, among them OpenBSD, tested more than 15 IPsec products, both gateways and hosts, for interoperability. The tests were successful as far as general IPsec and pre-shared key authentication went, OpenBSD interoperated with everyone, but due to time constraints we never got to test the certificate support appropriately. The results were presented later that fall at a conference in Stockholm.

• AUUG'99 , Sep 8 - 11, 1999, Melbourne, Australia.
  Theo de Raadt gave two talks on "quality of software" related issues and participated on a panel about how open source projects are coordinated.

• Usenix Security , Aug 23 - 26, 1999, Washington, DC, USA.
  Many OpenBSD people from the east coast showed up and sold CDs and shirts. It was pretty clear from discussions that many people were very aware of OpenBSD, and that OpenBSD was being used in very significant security roles.

• 45th IETF meeting , Jul 12 - 16, 1999, Oslo, Norway.
  A number of OpenBSD team members from all over the world were at this conference. In addition to attending the IPsec and DNS working groups (among others) we did IPsec/IKE interoperability testing together with the Japanese KAME project. Also, Angelos D. Keromytis did a presentation on his work with keynote and isakmpd in OpenBSD.

• Defcon 7.0 , Jul 9 - 11, 1999, Las Vegas, Nevada, USA.
  At this conference, the OpenBSD team sold 100 or so 2.5 release CDROMs and a TON of T-shirts.

• Usenix Annual Technical Conference , Jun 6 - 11, 1999, Monterey, California, USA.
  The USENIX Association provided The OpenBSD Project with a grant to underwrite the production of CDs of OpenBSD 2.5. (We distributed the release for free to attendees of the USENIX Annual Conference in June.)
  Usenix team members were involved in the authoring and presentation of 4 OpenBSD-related papers:
  • Opening the Source Repository with Anonymous CVS.
    Usenix 1999, by Charles D. Cranor, Theo de Raadt.
    paper, PDF and slides.
    
  • A Future-Adaptable Password Scheme.
    Usenix 1999, by Niels Provos, David Mazieres.
    paper, PDF and slides.
    
  • Cryptography in OpenBSD: An Overview.
    Usenix 1999, by Theo de Raadt, Niklas Hallqvist, Artur Grabowski, Angelos D. Keromytis, Niels Provos.
    paper, PDF and slides.
    
  • strlcpy and strlcat -- consistent, safe, string copy and concatenation.
    Usenix 1999, by Todd C. Miller, Theo de Raadt.
    paper, PDF and slides.

• 5th Annual Linux Expo , May 18 - 22, 1999, Raleigh, North Carolina, USA.
  Some OpenBSD team members were at this conference selling OpenBSD 2.5 CDs, OpenBSE T-shirts, as well as Blowfish T-shirts, which sold out very quickly at a table donated by the Expo. OpenBSD was the only BSD represented at the vendor exposition, and we had a good chance to present a secure alternative to Linux.

• 44th IETF meeting , Mar 15 - 19, 1999, Minneapolis, Minnesota, USA.
  Some OpenBSD team members were at this conference, in particular our IPSEC developers.

• NordU99 -- The first EurOpen/USENIX Conference , Feb 9 - 12, 1999, Stockholm, Sweden.
  A couple of OpenBSD team members were there and some of the swedish user society as well. OpenBSD CDs were sold at a booth and at the end of a security talk, the project got applauded for its continuous strive of auditing security sensitive parts of the system.

1998

• IPsec/VPN Interoperability tests & seminar, Dec 14, 1998, Stockholm, Sweden.
  OpenBSD was represented as one of about a dozen IPsec implementations who were tested for interoperability. The tests were successful, both for the technology in general, and for OpenBSD in specific. We managed to communicate encrypted with every vendor present, and to negotiate keys via IKE with everyone capable.

• LISA '98: 12th Systems Administration Conference , Dec 6 - 11, 1998, Boston, Massachusetts, USA.
  More than 10 OpenBSD team members showed up. By far, OpenBSD was the largest representative group from free software at the conference. Usenix gave us a table in the vendor area where we sold 2.4 CDROMs, 2.3 "wire-frame" T-shirts, and the new 2.4 embroidered "Because security matters..." T-shirts, polos, and sweaters. An OpenBSD BOF was held one evening, led by Theo de Raadt. A PalmPilot schedule loader was at the membership booth, powered by OpenBSD.
  The terminal room ran OpenBSD 2.4 on 45 machines. Obviously trust in OpenBSD had increased since many people, normally wary of security problems of open terminal rooms, were seen using the machines.

• DISC - Seguridad en Cómputo 98 , Nov 2 - 7, 1998, Mexico City, Mexico.
  Theo de Raadt gave a talk about security auditing, sponsored by CORE SDI S.A., an Argentine security auditing company who strongly believes in the future of OpenBSD. (Slides are available).

• IP-dagarna, Oct 29 - 30, 1998, Stockholm, Sweden.
  At this conference, entirely devoted to IP, Niklas Hallqvist from the OpenBSD team held a talk on the IKE (a.k.a ISAKMP/Oakley) key management protocol and experiences from the implementation of isakmpd, an IKE implementation funded by Ericsson Radio Systems and developed primarily for the OpenBSD IPSEC stack.

• NCEE '98, Oct 9 - 10, 1998, Auburn, Maine, USA.
  An extensive after-action report was sent to advocacy@openbsd.org. While sales of shirts and CDROMs left much to be desired, we did have good opportunities to further project visibility and highlight its strengths.

• Reflections/Projections 1998 , Oct 2 - 4, 1998, Champaign-Urbana, Illinois, USA.
  Theo de Raadt spoke in a panel about Open/Free software with Eric Raymond and others.

• O'Reilly and Associates Open Source Developer Days , Aug 21, 1998, San Jose, California, USA.
  OpenBSD team members were on-hand to discuss OpenBSD's role among the other free software projects available. They also sold some CDs and T-shirts.

• Defcon 6.0 , Jul 31 - Aug 2, 1998, Las Vegas, Nevada, USA.
  The router to the outside world was an OpenBSD 2.3 box. It was involved in a "capture the flag" competition in which an entire room of crackers attempted to break into it and machines running other operating systems. The OpenBSD box was not broken into.
  Almost 100 OpenBSD 2.3 CDROMs were sold (we ran out again). The primates at monkey.org brought 2.3 "wire-frame" OpenBSD T-shirts to the conference and sold almost 200 of them. The proceeds from the sales were donated to the OpenBSD project.

• BlackHat Sessions , Jul 29 - 30, 1998, Las Vegas, Nevada, USA.
  Theo de Raadt presented a talk entitled "Auditing software for security" about the OpenBSD security auditing team's process and the lessons the team learned. The talk concentrated on how our process fixes bugs -- not just holes -- since one never knows when 5 bugs will act together to become a hole.

• Usenix Annual Technical Conference , Jun 15 - 19, 1998, New Orleans, Louisiana, USA.
  At Usenix 1998 there was a strong OpenBSD presence both in the Freenix and normal tracks. Theo did a general talk about what the OpenBSD project offers. Angelos held a panel about IPSEC (which is quite an OpenBSD topic since IPSEC development at that time was so much further ahead in OpenBSD than anywhere else).
  The terminal room PCs ran OpenBSD 2.3. We sold many CDROMs. The first style of OpenBSD T-shirt also sold quite well.

• Usenix Security , Jan 26 - 29, 1998, San Antonio, Texas, USA.
  At this conference, Theo presented an evening talk which basically turned into a list of fixed security problems and cautionary tales about subsystems in which future problems may be encountered (slides available).
  The terminal room PCs ran OpenBSD 2.2.

1997

• HIP , Aug, 1997, Almere, Netherlands.
  Niels held a talk about the problems of unencrypted TCP/IP connections, offering IPSEC as possible solution.

• HOPE, Aug, 1997, New York, New York, USA.
  The terminal room consisted primarily of DECstations running OpenBSD 2.1. Once again, the L0phT people had very good things to say about our security.

• Defcon V , Jul 11 - 13, 1997, Las Vegas, Nevada, USA.
  At this conference, the OpenBSD team sold 100 or so 2.1 release CDROMs.
  Since this is the primary security conference, many speakers said very good things about our stance on security... particularly people like the L0phT.

• Usenix Annual Technical Conference , Jan 6 - 10, 1997, Anaheim, California, USA.
  Theo de Raadt held a BOF ("Birds Of a Feather", i.e. a meeting of people interested in the same thing) about OpenBSD.