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Utility to open TCP port to listen state

Fresh7 days ago
Mar 15, 2026183789 views
Confidence Score0%
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Problem

Is there some basic utility to open a specific network TCP port on my machine? I need to test how my program deals with ports in the listening state.

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Fix for: Utility to open TCP port to listen state

Low Risk

netcat should do what you want. Have it listen on you machine and echo stuff to STDOUT: when you want it to close when the connection ends, don't use -k

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