The meta-auth Authentication Server is a central service for severl types of authentication. A Perl module and a C object file are both available for use with your cgi scripts and binaries to access meta-auth.
Information is available on the available authentication services .
The default behavior is for meta-auth to issue a token after authentication is performed. When an application wishes to check that a particular user has already been authenticated, the token is passed along to meta-auth. If the token is valid, a fresh token will be issued and the old token invalidated. By invalidating previously-used tokens, replay attacks are minimized. In addition, this prevents a user from backingup to a previous form and resubmitting.