Wireless Hardware: Sonicwall NSA 3500 and Sonicpoint N Access Points Running a Server 2012 NAP with Radius configured. When a client joins the wireless network I get an event in the event log telling me that Radius has granted full access, so that seems to be setup correctly. At this point I have some strange problems. I have fully functioning internet access, so that is not an issue. The issue relates to accessing domain resources. I can ping hosts on my domain network successfully. DNS resolution on the other hand works only to some hosts, and is using my PDC for DNS. I can sometimes browse, very slowly, file shares. But not always. Also the wireless connection is showing as unauthenticated. Is this the source of my problems? Or should I look to the Sonicwall as a problem? Thanks, TJ

I can sometimes browse, very slowly, file shares. But not always. Did you enable branchcache service? Balaji Kundalam

No BranchCache in our environment. It turns out that it was a Sonicwall routing issue. They have a hidden config page, and changing these two options magically fixed my problems: disable "Enable TCP sequence number randomization" and/or "Perform SYN validation when not operating in strict TCP compliance mode" Looks like some sort of Sonicwall routing issue, now I need to track down the real cause and see what these TCP settings really do. Thanks for the reply though.

Glad to hear you found the root cause.Niki Han TechNet Community Support