Hi, 1. get the ip address of the server selected by the dispatcher for the After calling one of the dispatcher selection functions (ds_select_dst, ds_next_dst and so on...) you'll have the selected gateway in the $du variable. 2. check if the request ip address is in the dispatcher list of servers Use ds_is_from_list ( http://www.kamailio.org/docs/modules/devel/modules/dispatcher.html#dispatch…) for this > 3. check if the request ip address is in the trusted server list You can use permissions module and its allow_* functions ( http://www.kamailio.org/docs/modules/devel/modules/permissions.html) > 4. get the ip address of the selected lcr gateway server As for 1), you can get the ip address of the gateway from the $du variable. > I cannot seem to find the functions for these things in the documentation. > Please help. > Regards > Andrew Okri Regards, Federico