1007 TCP:Used with both versions - Web GUI listens on 127.0.0.1:1007 only. Accessible directly only from the local machine. Remote connections to the console must be made to the proxy port.
80 TCP:Stand-alone Proxy Version - Is used for publishing the WPAD.dat (Web Proxy Auto Detection settings) when WPAD is selected in the Proxy Settings page ISA/TMG Version - ISA may be configured to use this port for publishing the WPAD.dat. It also may be used to receive web requests for NAT clients that do no have their proxy settings set.
8080 TCP:Stand-alone Proxy Version: The default port used by GFI Proxy in the Standalone Proxy version. Can be changed from the Proxy Settings configuration page in the Webmonitor Console.
ISA/TMG Version: The default port ISA/TMG uses for it's proxy server. Can be changed in the ISA/TMG administration console.