[squid-users] Re: transparent caching

Hi Shan,

If you are running Squid as a forward proxy, for example as an Internet
gateway, you would normally have a firewall (device or server running
IPTables) that your users would pass through. The idea with transparent
proxy is that your users would have no idea they are being proxied, that is
you would not normally have to configure a users browser to go via the
proxy.

Instead, you set your firewall to capture all traffic on port 80 (from your
internal network) and pass that transparently to your Squid server (which
usually runs on port 3128).

User browses -----> Firewall forwards ---------> Squid listening on 3128
to a website port 80 requests deals with the
request

If you set your Squid server to run on port 80, you could still run it as a
transparent proxy, you would still need to do the port forwarding from your
firewall to the Squid server.

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