I have a Watchguard XTM-520 box and I'm trying to configure it to use a Squid linux as an external cache server, since watchguard does not do caching.
If I point my browser directly to the squid server
(which is behind the firewall) I'm able to browse ok.
The firebox has a setting for the http proxy that
allows you to point all outgoing http requests to a
proxy caching server (Use Webcache Server). If I plug the squid IP address
in here, browsing stops working. The browsers hang
for a while at the site contacted, waiting for reply.
Finally the request times out.
Can anyone please help me to find out why this config is not working?