# Authentication route
route[AUTH] {
#!ifdef WITH_IPAUTH
                if(allow_source_address())
                {
                        # source IP allowed
                        return;
                }
#!endif

#!ifdef WITH_AUTH
        if (is_method("REGISTER"))
        {
                # authenticate the REGISTER requests (uncomment to enable auth)
                if (!www_authorize("$td", "subscriber"))
                {
                        www_challenge("$td", "0");
                        exit;
                }

                if ($au!=$tU)
                {
                        sl_send_reply("403","Forbidden auth ID");
                        exit;
                }
        } else {

#!ifdef WITH_IPAUTH