LSE toolsLSE toolsp0f (317)p0f (317)

Tool and Usage

P0f is a security tool that utilizes passive traffic fingerprinting mechanisms to identify the systems behind any incidental TCP/IP communications.


This tool is a great addition to nmap, especially if that reveals not reliable data or none at all. Due to the passive way of working, it won't be detected nor influences any connection.

- Version 3 of p0f is a full rewrite
- The idea for p0f dates back to June 10, 2000
- Tool can run in foreground or as a daemon process

Common uses for p0f include reconnaissance during penetration tests; routine network monitoring; detection of unauthorized network interconnects in corporate environments; providing signals for abuse-prevention tools; and miscellaneous forensics.

Usage and audience

Tool review

The review and analysis of this project resulted in the following remarks for this security tool:


  • + Project is mature (10+ years)
  • + The source code of this software is available
  • + Well-known tool

Author and Maintainers

P0f is under development by Michał Zalewski.

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Project details
Latest releaseNo release found
Last updatedSept. 17, 2017

Project health

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 P0f3 project page

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