I've been messing around with getting my squid proxy to allow authentication to OWA (outlook web access) and discovered something very interesting... If I try another site that has OWA running behind an iptables based firewall (shorewall) I get the exact same message. This OWA is accessible with no issues if I do not use Squid. However, if I try accessing OWA through the Squid to an OWA that exists behind a commercial firewall (sonicwall) it works just fine. I'm now thinking that it's an issue with Squid and iptables based firewalls. I played around with packet mangling but that didn't seem to have any effect. Does anyone have an idea on what might be causing this? Thanks!
