IPsec

(redirected from Authentication Header)
Also found in: Acronyms.

IPsec

(networking, protocol, security)
("IP Secure"?) A protocol that provides security for transmission of sensitive information over unprotected networks such as the Internet. IPsec acts at the network layer, protecting and authenticating IP packets between participating devices ("peers"), such as Cisco routers.

IETF IPsec.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
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References in periodicals archive ?
An authentication header (AH) uses a key to the hash algorithms to sign the packet for the whole packet (IP header and payload) to provide authentication, integrity and the protection of the ban on re-broadcast.
A practical U-healthcare network with security and QoS
Kent, "RFC: IP Authentication Header," Request For Comments 4302, December 2005.
A secured service level negotiation in ubiquitous environments
The solution combines Encapsulating Security Payload (ESP) packet encryption and Authentication Header (AH) capabilities to ensure private information transition is free from snooping and tampering.
LineSpeed Client. (Virus Notes)
And some IPSec protocols, such as AH (authentication header) are fundamentally incompatible with NAT, because they guarantee the packet hasn't been changed.
Making Sense Of VPN Systems, Standards, And Protocols
Cerberus (31) is a Linux kernel reference implementation of the IPsec (32) protocol, including both the Encapsulating Security Payload (ESP) (33) and Authentication Header (AH) (34).
Information technology measurement and testing activities at NIST

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