Let me ask this Question in a different way as you did not understand I have a sever at home that has a firewall on it that I have writen myself what I what to do is this I have one wireless computer on my network and a computer on a ethernet both connected to the internet thourgh a firewall using IPTABLES what Rules do I use to make the wireless computer use user-based authenentication on the proxy to access http and ftp I am using squid web Caching also. would what I have below do it. $IPTABLES -t nat -A PREROUTING -i INPUT -p tcp --dport 80 -j REDIRECT --to-port 3128 $IPTABLES -t nat -A POSTROUTING -o OUTPUT -p tcp --dport 80 -j REDIRECT --to-port 3128 Thanks for any help you can give