Get-NetTCPConnection not reporting ports correctly

[ryanhdake]

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Links

https://github.com/MicrosoftDocs/windows-powershell-docs/blob/main/docset/winserver2016-ps/nettcpip/Get-NetTCPConnection.md

Summary

Running Get-NetTCPConnection not reporting all ports correctly. Found 2 machines that report that ports 80 and 443 are only listening on IPv6 when they are in fact listening on IPv4 and IPv6. This was confirmed by bindings in IIS and netstat.

Details

I am using this to test ports on a webserver automatically.
Running netstat -ano | findstr /i ":80 :443" | findstr /i listening | findstr /v "::" reports that the ports are open for IPv4 - this is correct

When running get-nettcpconnection | where {$_.localport -eq "80" -or $_.localport -eq "443" -and $_.state -eq "Listen"} reports only the IPv6 ports are open.

I have verified these results by running get-nettcpconnection | where {$_.state -eq "listen"} | sort localport
port 135 is reporting for IPv4 and IPv6 but 80 and 443 dont.

Suggested Fix

No response

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