An All-in-One PowerShell Test Port Testing Tool
PowerShell Tip of the Week: Quick connection test on remote machines - Powershellbros.com
Powershell - Testing a Port with Test-NetConnection - Alexandre VIOT
How to verify connectivity using PowerShell
Tech Support Corner: Using PowerShell to Troubleshoot TCP Ports
Script: Test TCP port – Powershell FTW
PowerShell: Check open/closed ports with Test-NetConnection – SID-500.COM
Use the Telnet client to test a network connection - RDR-IT
How-to use Test-NetConnection in PowerShell — LazyAdmin
How-to use Test-NetConnection in PowerShell — LazyAdmin
How to check if a remote port is open (Windows) - IT-REACT
Powershell - Testing a Port with Test-NetConnection - Alexandre VIOT
Querying UDP Ports with PowerShell | Learn Powershell | Achieve More
Test remote network port connection in Windows 10
Test connection to servers on several ports - Powershellbros.com
Testing connection to secure channel via Powershell
Testing Connectivity Over Any TCP Port | Conway's IT Blog
Test UDP connection with PowerShell - Cloudbrothers
Using telnet to Test Open Ports | Knowledge Base
How to use telnet to test connectivity to TCP ports | NetBeez
How-to use Test-NetConnection in PowerShell — LazyAdmin
