I'm having some strange DNS behavior. My config: I have a HyperV Host with two NICS running a DNS server and Sophos Firewall. 1 NIC is connected to the modem, and the other is connected to an asus router. I'm using Sophos as the DHCP server, and I have everything on the intranet using the local DNS server. I have DNS Forwarders in Sophos pointing to the OpenDNS IPs. I'm having two problems. 1. when I go to welcome.opendns.com it says I'm not using the OpenDNS IPs. 2. Random websites are failing to load with a ERROR_CONNECTION_REST or ERROR_CONNECTION_ABORTED. I've tried connecting a router to the modem directly and I don't have any issues getting to the same websites that fail when i go through the firewall. So, I don't think it's the modem/ISP. Googling the errors everything tells me that it's DNS related, but I have no idea why. I've made a rule on firewall to open all ports to my laptop, so I don't know what else could be blocking. Anyone have any ideas why i only have issues reaching some sites when going through the firewall?
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