Squid and Windows Server 2012 R2 Essential Anywhere Access
As if anyone uses Microsoft Anywhere access! If they do, then hopefully this will help them.
I've got squid and transparent proxy setup on my pfsense box.
I was testing this out on my home environment for a client. I've setup port forwarding to the MS Server. The port forwarding works and I can see the port is opened. But when verifying the configuration, Anywhere access keeps failing and says port is not opened / configured.
You need to add the IP of the server to the proxy bypass list. Or else you will experience problems.