System and network troubleshooting often involves checking and obtaining information about ports to ensure functionality and determine the source of problems. Learn handy tips to help keep systems ...

A port is a numeric identifier for software that runs on a computer, like Web server or email server software. When a port is open, it's accepting connections from the outside world. It's not ...

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.

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.