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Securing and Optimizing Linux

RedHat Edition -A Hands on Guide

Gerhard Mourani

Madhu "Maddy"

Copyright © 2000 by Gerhard Mourani and OpenDocs, LLC.

Copyright © 2000 by Madhusudan (Madhu "Maddy") XML Source

Table of Contents

Preface

1. Why did i write this book?

2. Why fiddle?

3. DocBook !

4. DocBook/XML

1. Getting Started

1. Introduction

2. Installation

2. Overview of OS Linux

3. Installation of your Linux Server

4. Post-Install

3. Security, Optimization and Upgrade

5. General System Security

6. Linux General Optimization

7. Configuring and Building a Secure, Optimized Kernel

4. Networking -Management, Firewall, Masquerading and Forwarding

8. TCP/IP -Network Management

9. Files -Networking Functionality

10. Networking -Firewall

11. The firewall scripts files

12. Networking Firewall -Masquerading and Forwarding

5. Software -Security

13. Linux -The Compiler functionality

14. Software -Security/Monitoring

6. Software -Networking

15. Software -Securities

16. Software -Securties(commercial)

17. Software -Securities/System Integrity

18. Linux Tripwire ASR 1.3.1

19. Software -Securities/Management & Limitation

20. Set Limits using Qouta

21. Software -Networking

22. Software -Server/Mail Network

23. Linux IMAP & POP Server

24. Software -Networking/Encryption

25. Linux FreeS/WAN VPN

26. Linux OpenLDAP Server

27. Linux PostgreSQL Database Server

28. Software -Server/Proxy Network

29. Software -Network Server, web/Apache

30. Optional component to install with Apache

31. Software -Server/File Sharing-Network

32. Linux FTP Server

7. Backup and Restore

33. Why's and When's of Backup and Restore

I. Appendixes

A. Resources

B. Tweaks, Tips and Administration tasks

C. Obtaining Requests for Comments (RFCs)

List of Tables

3-1. Sample representaion of partitions

33-1. Dump scheme

List of Examples

3-1. Starting and Stopping various Daemon's

5-1. Export file systems using NFS

5-2. Disable console-equivalent access

5-3. Print log reports

5-4. Use man pages

5-5. Use find to find

6-1. For 128 MB of RAM

7-1. SMP support

8-1. Two ISA ethernet cards

12-1. rc.firewall.blocked

13-1. Using tar

15-1. Remote login using ssh

15-2. scp Secure Copy utility

15-3. local to remote

16-1. login to a remote using ssh2

16-2. sftp2, Secure File Transfer

18-1. Usage of Tripwire

19-1. Importing using gpg

19-2. Signing key

19-3. Encrypting

19-4. Decrypting

20-1. usrquota

20-2. grpquota

21-1. dnsquery

21-2. Look up host names

21-3. Using host

21-4. List a complete domain

22-1. Overriding RBL

22-2. Alternative names

22-3. sendmail.cf

26-1. my-data-file

26-2. LDMB backend

26-3. modifyentry

26-4. Address Book

30-1. Using Netscape browser

33-1. Backup directory of a week

33-2. scp SSH command

33-3. scp SSH command