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CheckTCP determines whether a single or a range of TCP ports on a host are open. Additionally you can receive initial data sent from the remote host through an open TCP connection, such as when connecting to most SMTP hosts.

 

CheckTCP uses multiple threads when scanning a range of ports for a fast port scan.

 

CheckTCP returns an %ERRORLEVEL% of 0 when the port is open and an %ERRORLEVEL% > 0 when the port is not open.

 

Interface

Command-line

 

Files

checktcp.exe

 

Supported Platforms

Windows