Transparent Proxy

Hi I am currently configuring my Proxy server. Was able to set it up but my problem now is configuring it as a transparent proxy server. the problem is I really don’t know how. I was reading some notes in linux programming but they let me do the iptables prerouting., how can I do that in Opensuse?could someone help me?thanks in advance

Opensuse 11.4
squid 2.7 stable 6 edition

hello, here is some general info using squid: SquidFaq/InterceptionProxy - Squid Web Proxy Wiki