Many organizations use a firewall (usually a router or a computer) to protect their internal network from external access. A proxy server is a program, typically running on a firewall computer, that can be configured to block external access while permitting users behind the firewall to gain access to Internet resources.
You can specify a different proxy server for HTTP, gopher, and FTP protocols.
| To directly access | Enter this |
| www.name.com | www.name.com |
| Only port 80 of www.name.com | www.name.com:80 |
| Any computer in the name.com domain | name.com |
| Port 80 of any computer | :80 |
| Computers inside the name.com domain and port 80 of any computer | name.com, :80 |
| Computers inside your local firewall | <local> |