- Portqry.exe is a command-line utility that you can use to help troubleshoot TCP/IP connectivity issues. Portqry.exe runs on Windows 2000-based computers, on Windows XP-based computers, and on Windows Server 2003-based computers. The utility reports the port status of TCP and UDP ports on a computer that you select.
https://support.microsoft.com/en-us/help/310099/description-of-the-portqry.exe-command-line-utility
- NBLookup is a command line diagnostic tool that uses the User Datagram Protocol (UDP) to send NetBIOS name queries to Microsoft Windows Internet Naming Service (WINS) servers. NBLookup requires TCP/IP version 4 to run. WINS servers accept name resolution requests on UDP port 137.
https://support.microsoft.com/en-us/help/830578/nblookup.exe-command-line-tool
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