PLANET BM-2101 - Manual (Page 73)

We set two environments.
No . Range The application environment
Example . 1 Custom To permit the WAN user communicate to LAN user via the
network phone through policy . VoIP port number TCP
1720 , TCP 15328-15333 , UDP 15328-15333
Example . 2 Group To group the services , and limit the specific user accessing
the network resources which provided by the group service
through Policy.GruopHTTP , POP3 , SMTP , DNS