On Fri, 6 Feb 2004, David Rippel wrote:

> Is it possible to pass parameters to the auth_param basic program similar to how external_acl_type works, for instance:
> external_acl_type ident_cmd %SRC /usr/libexec/check_ident
> I'd like to pass the client IP to my basic auth program.

This you can't do.

But there is nothing which stops you from combing authentication and IP
based checks in sequence. See for example the user_ip helper.