If you are on the Firewall Profiles for Agents screen, click Edit Reference Server List.
If you are on the Endpoint Location screen, click reference server list.
Exclude agents using VPN or PPP dial-up connections: Select to define endpoints that use a VPN or PPP (Point-to-Point Protocol) dial-up connection to the reference servers as External Agents
To specify another port number for the same reference server, repeat steps 2a and 2b. The Security Agent uses the first port number on the list and, if connection is unsuccessful, uses the next port number.