Informations, tips and technics.

Tool to querying TCP and UDP ports in Windows

On the post about NTP, I have to do some testing to be sure that my Windows server can contact the NTP server on the port 123. NTP use UDP to communicate and here, telnet cannot help you.

But there is a tool from Microsoft called PortQry:

Download PortQry2 from Microsoft 

 and there is also a GUI for this tool.

Download PortQryUI from Microsoft

I found those tools very usefull and can be added to your IT’ swiss army knife.


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