The 'ping' command on most flavors of Unix has a nifty little feature that lets you select which port to ping on. It's handy when troubleshooting network applications. For example, if some wierd app.
Derek Schauland explains how the newly added Sysinterals PSPing utility provides an easy ping test, but also comes with additional features. The PS utilities in the Sysinternals Suite from Microsoft ...
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. The tool reports the port status of TCP and UDP ...
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