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CheckTCP

CheckTCP is an command line application that can determine whether a TCP port on a host is 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 can be used to quickly determine whether a certain TCP port is open and optionally display any data sent by the remote host over the established connection. CheckTCP is not intended to be used as a portscanner and does not have good performance for such use.

CheckTCP returns an %ERRORLEVEL% of 0 when the port is open and an %ERRORLEVEL% > 0 when the port is not open. This is useful when using checktcp.exe in scripts.

Files

checktcp.exe

Supported Platforms

Windows