Even though i've been told by at least 4 people from Verizon that my modem DOES NOT HAVE A FIREWALL, well I stumbled onto it just the other day, I typed in the IP address of my modem, and there it was.... and it was set to HIGH. I turned it off, and BOOM, everything works great. I even spoke to a Verizon after this, and they denied there was a Firewall, And I tell them It is there, or was, and they talk to me like i'm a nutjob!!! So much for their tech support team...