[RADIATOR] TACACS authorization without authentication

[Vangelis Kyriakakis]

Hello,

    How can I configure ServerTACACSPLUS to do per domain authorizations 
without authenticating the users first?
    I would like to be able to use the following tacacs configuration:

user = domain.gr {
              service = ppp protocol = vpdn {
              tunnel-type = l2tp
              tunnel-id = F_DOMAIN
              vpdn-group = F_DOMAIN
              l2tp-tunnel-authen=no
              ip-addresses = "xxx.xxx.xxx.xxx"
           }
}

            Regards
               Vangelis Kyriakakis
               FORTHnet S.A.