Today I will install a squid server on server and use client to visit internet through web proxy on
1. I will install a bridged network card on server, and start it up, since it is bridged with physical one, it can get the internet access from my physic network card.
2. I will install a squid server on and configure following lines
acl mynet ser  (this one set up mynet as a local network name, and use it in the following lines)
http_access allow mynet (this one enable network )
http_access deny all(this one disable all visitors from the other networks)
iptables -I INPUT -s -p tcp –dport 8080 -j ACCEPT