Troubleshooting with telnet

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Using Telnet to Troubleshoot Connection Issues


Sometimes when a vendor is unable to connect to an interface it is a networking issue between the client and vendor. A great way to troubleshoot this is by using telnet.




  • On the ConnectR server open the Command Prompt, and type in: telnet localhost "port number"
  • Next on the vendors interface server telnet to the IP address and port
  • Once you click enter the screen should go blank; this means you're connected.
  • ConnectR status should change from Waiting to Connected


If it works from the ConnectR machine and not the vendor, then it's a networking or firewall issue. If it doesn't work on ConnectR, then most likely the source interface is turned off or misconfigured.