Alex Choo wrote:
Hi! i was trying to setting up a Interception Caching or Transparent Caching with squid. i'm puzzled that we needs to redirect the traffic to Squid listening port from port 80. i've tried to configured Squid to listen on port 80 and the relevant config for transparent caching. But when i set my workstation default route to my Squid box, it'll failed. It's ok if i explicitly set the proxy in the browser. my question is, do we really need to some sort of traffic/port redirection for interception/transparent to work? i'm using Squid v 2.6
Yes. traffic passing through a router is handled differently at the firewall/kernel level than traffic stopping at that same router.
Squid is a local app, but the traffic is only passing through. The interception bit is what changes the traffic from passing-thru to stopping-at.
http://wiki.squid-cache.org/ConfigExamples/Intercept/ has all the gory config details for squid and some OS. Maybe this diagram will help understand what packets do in a system... http://l7-filter.sourceforge.net/PacketFlow.png Amos -- Please be using Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10 Current Beta Squid 3.1.0.3 or 3.0.STABLE11-RC1
