Smith6612 wrote:
Just so I'm aware, is the application on the remote end always sending from Port 53 to a randomly defined port on your PC? How exactly does this application function or what is it's purpose? Does it require the NAT to have port forwarding set up for communication or does it actively try to mark the ports on the NAT as active?
Based on the entries in the router's security log showing the connection attempts that are being blocked, the system on the internet that is trying to communicate with the application is sending on port 53, and they are trying to get through to various high numbered ports on the receiving pc. The application has a setting that is supposed to make it use a different port, but I think that must just be for sending traffic out, because enabling it makes no difference.
I am not supposed to mention the name of the application, but its purpose is to provide encryption for a certain commonly used function that isn't normally encrypted. The instructions provided by the developer make no mention of port forwarding. I have informed them of the problem I am having. They suggested that Verizon is blocking it somewhere, but the fact that it works when the pc is in the DMZ seems to me to rule that out.
