Squid: Remote Cache Only

[m1k3r]

Hello,

I am using pfSense 2.1-RELEASE (i386) with Squid and the Captive Portal (RADIUS Authentication) to offer wireless access.

We have an external HTTP/S filtering box (Smoothwall Enterprise) which handles all web filtering. I have set Squid to use this a remote cache which is working as expected, however sometimes a request will use the local cache and bypass all filtering.

Can some one please explain if it is possible to set Squid to use the remote cache only and block/deny all other requests except for those sent to the remote cache?

Many thanks,
Mike