Proxy:
If you need to use a Proxy Server to connect to the internet, you should specify the address of the proxy. If you find that Trellian FTP is unable to connect, you should check and make sure that both the address and the port of your proxy are correct.
Port:
Specifies the port to use if using a Proxy.
Username:
Specifies the username to use when accessing the Proxy. (Not required on all proxy servers, please ask your System Administrator for help if unsure)
Password:
Specifies the password to use when accessing the Proxy.
(Not required on all proxy servers, please ask your System Administrator for help if unsure)