Configure your Web browsers on each of the "Workstation" to use proxy:

Service IP Address (gateway machine IP) PORT NUMBER
HTTP proxy 192.168.0.1 80
Secure proxy 192.168.0.1 443
FTP proxy 192.168.0.1 8000
SOCKS* 192.168.0.1 1080

In Netscape Communicator 4.x or higher

In Netscape Navigator 3.0x