I am trying to set up a PPTP VPN connection on a Mac that will be connecting to a Watchguard X750e Core firebox running Fireware 10.2.11. I configured an incoming "Any" service (Should allow Any protocol) to allow PPTP users access to the Local interface. (See first image) The Mac connects successfully, I can ping any device on the private network by IP address but I cannot ping anything by name. If I look in the DNS properties of the PPTP config on the mac I see the correct DNS servers on my network are being acquired. I also noticed that my Watchguard is Denying netbios-ns/udp on port 137 (see second image). Could this have something to do with it?