Hi I want to configure packet filtering firewall (ipfw) on a Linux dual homed gateway(two nic's) having a proxy server( TIS FWTK). I have a http-gw running at port 80. I wonder if I can specify a set of ipfw rules that can restrict the outer nic to communicate only for http-gw( and other proxy services)to the outside world. I know that proxy is running on port 80, but I am curios which port is it using while communicating to other sites for http, so that i can allow communication from that particular port only. I would really appreciate if anyone can help me. thanks jawwad __________________________________________________ Do You Yahoo!? Get Yahoo! Mail – Free email you can access from anywhere! http://mail.yahoo.com/