Squid Transparent Proxy
 

Hey if you have setup squid transparent proxy how do you know if its working? or do you still have to configure something like the browsers on the clients computer for it to work?

If you're using transparent proxy there is no need to configure anything in the browsers. You just redirect the http traffic (i.e. the traffic to port 80) to the port squid is listening.

How do you redirect http traffic? is it through firewall? what if i dont have a firewall?

If you are talking about Proxy,at this point Squid, you must have it installed in your LAN. Then on your clients just point to that Squid server.

Now on the Squid server you will need to redirect all port 80 traffic to the squid port.

how do you do this

You can use the following iptables rule:
assuming that squid is listening on eth0 on port 3128. There is no need to configure anything on the client side.

oh so you use firewalls...:) ok now everything is clear .... thank you :D