Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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Well. The way you would want to do that would be to setup your squid proxy server. Then setup the client machines internet browser to use a proxy server. Aim the browsers at your squid server for http and ftp traffice and then leave the rest of the protocols blank, they will then by default go to the gateway, which I assume would be your iptables/ipchains box.
On your router/firewall to the outside world you would want to deny outgoing access for port 80 and 21 to everybody accept for your proxy server. If your router or firewall is a linux machine you can easily use iptables to implement this.
that should force your users to use your proxy. and if you do the same to ftp, your users might encounter problems if they are using IE 5.5 as it tries to do a direct connection when trying to browse ftp sites.