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Accessing VMware Guest Virtual Serial Port on Linux Host

In this post I show you how to telnet to an emulated serail port of a VMware guest VM running on a Linux host.

Determine State of a Port Using Telnet

Using telnet, you can make an educated guess whether a port on a remote host is open, closed or blocked by a firewall by the error message it throws. If you get no error message, the port is open. If you get an error like the following: Unable to connect to remote host: No route to host you are almost certainly seeing a blocked (by firewall or whatever) port. If you get an error like the following: Unable to connect to remote host: Connection timed out the port is almost certainly a closed port.