An Acronym for Authentication Header
An Authentication Header is part of the IPsec? protocol. IPSec is used to authenticate data passing between two hosts on the Internet. The Authentication Header provides only authentication - no encryption. A more detailed analysis is available at 
http://www.freeswan.org/freeswan_trees/freeswan-1.99/doc/ipsec.html#AH.ipsec.
Specified in RFC 2402.
4 pages link to AH:
