auth_algs

This option enables IPsec AH for a tunnel, with the authentication algorithm specified. The auth_algs option has the following format:

auth_algs authentication_algorithm

The algorithm can be either a number or an algorithm name, including the parameter any, to express no specific algorithm preference. You must specify all IPsec tunnel properties on the same command line. To disable tunnel security, specify the following option:

auth_algs none

See Table 1–1 for a list of available authentication algorithms and for pointers to the algorithm man pages.