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Test for open ports from using Telnet, Portqry or Powershell
Test-NetConnection: Check for Open/Closed Ports from PowerShell | Windows OS Hub
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Grails Goodness: Use Random Server Port In Integration Tests - JDriven Blog
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Self-testing of Serial Device Server-PUSR IOT
Test if a port on a remote system is reachable
Performance Testing - Open Port on Server - Progress Test Studio
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