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Tuesday, November 15th, 2022 2:31 AM

Port Forwarding for TCP Listening

I am creating an application meant to act as a host for data listening to a TCP port. The application itself runs fine when going thru localhost, but as soon as I try to connect it to a "forwarded" port it fails. So I ran NMAP to see if the port was actually open, and it was not.

I have attached screenshots to this post as I may have done something wrong, but NMAP says the port is closed. I have tried restarting multiple times, to no avail. I am using a BGW210-700.


Community Support


210.2K Messages

4 months ago

Hi ysorr9, we can point you in the right direction to get assistance with Port Forwarding and the TcpListener type.


We recommend reaching out to the team at our paid service, HomeTech. They provide 24/7 support for a range of networking issues and can help you find a resolution.


If you need help with anything else, we'll be here.


Thanks for visiting the AT&T Community Forums.


Aminah, AT&T Community Specialist

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