PortQry - Simple Command Line Port Scanner
There are many reasons why you may need to use a port scanner to check if a TCP or UDP port is open. Microsoft has a little known utility called PortQry that allows you to perform basic port scanning from the command line. You can download PortQry from
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Read the complete post at http://www.expta.com/2010/11/portqry-simple-command-line-port.html