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Netcat is a simple Unix utility which reads and writes data across network connections, using TCP or UDP protocol. It is designed to be a reliable "back-end" tool that can be used directly or easily driven by other programs and scripts.  At the same time, it is a feature-rich network debugging and exploration tool, since it can create almost any kind of connection you would need and has several interesting built-in capabilities. Netcat, or "nc" as the actual program is named, should have been supplied long ago as another one of those cryptic but standard Unix tools.   

Ported from latest debian release (netcat-traditional 1.10-41)


Application versions: 



objectifnul's picture

Excerpt from manual:

Inappropriate Usage : ncat should never be installed with special privileges (e.g. suid root).. That would open up a major security vulnerability as other users on the system (or attackers) could use it for privilege escalation.

Note: in this release, the -e option is not disabled. In other words, please be careful with this powerful tool.

fph's picture

What do you mean? Is this package misconfigured in an insecure way? Or is this just a general warning?