pnscan(1) multi threaded port scanning tool


pnscan [ options] [ <CIDR | host-range> <port-range>]

pnscan [ options] [ <port>]


This manual page documents briefly the pnscan command.

pnscan is a tool that can be used to survey TCP network services.

When used with two command line arguments it will scan the indicated network/hosts and ports. When used without arguments or just one then it will read hostname/IP addresses from stdin and probe those. The single port/service argument is used as a default if no port is indicated on stdin

For example, it can be used to survey the installed versions of SSH, FTP, SMTP, Web, IDENT and possibly other services.

This program implements a multithreaded TCP port scanner. More information and new relaseses may be found at:


Show summary of options.
Be verbose.
Print version.
Print debugginf info.
Lookup and print hostnames.
Enable shutdown mode.
Line oriented output.
Request string to send.
Response string to look for.
-W<hex list>
Hex coded request string to send.
-R<hex list>
Hex coded response string to look for.
Max bytes of response to print.
Connect/Write/Read timeout.
Concurrent worker threads.


pnscan was written by Peter Eriksson <[email protected]>.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts.