If I have following this tutorials to configure transparent proxy: on cisco L3 switch: http://wiki.squid-cache.org/ConfigExamples/Intercept/Cisco2501PolicyRoute on squid machine: http://wiki.squid-cache.org/ConfigExamples/Intercept/IptablesPolicyRoute Is it necessary to add any configuration to the squid like: http_port 8080 intercept or following this tutorial is enough for me. NOTE: I have the client, squid and the web server on different machines Mark