Securing the Network in Oracle® Solaris 11.2

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Updated: August 2014

Authentication Header

The authentication header provides data authentication, strong integrity, and replay protection to IP packets. AH protects the greater part of the IP packet. As the following illustration shows, AH is inserted between the IP header and the transport header.

image:Graphic shows the AH header between the IP header and the TCP header.

The transport header can be TCP, UDP, SCTP, or ICMP. If a tunnel is being used, the transport header can be another IP header.