Test if Firewall is blocking a Port. Check which Ports are being used. Also learn how to check which process or service is using the open port.

If your router responds on port 32764, get a new router. I have seen suggested work-arounds, and discuss a couple below, but the Defensive Computing approach is to take the router out of service.

Port Query (PortQry.exe) is a command-line utility in the Windows operating system that you can use to help troubleshoot TCP/IP connectivity issues.

How to Check if an Ethernet Port Is Configured for a Dynamic IP. Every device connected to a network must have its own Internet Protocol address to communicate with other devices.

How to check a remote system using curl to see if a TCP port is listening This achieves the same result as the prior step, but is a handy way to get oriented towards the curl application.

What I need to do is open a new port for each user (connection). How, programaticly, do I check if a certain port is open?

FTP servers use TCP ports 20 and 21 to send and receive information, so you won't have any conflicts with the web server running on TCP port 80.

I need software, preferably running as a service, that can open a tcp port and log anything incoming into a file. Bonus if I can choose which port and breaks down log files by day.