OpenBSD Handbook

OpenBSD 7.9 release · amd64 · Generated 2026-09-09

p0f3-3.09b

passive OS fingerprinting tool

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Description

P0f is a tool that utilizes an array of sophisticated, purely passive traffic fingerprinting mechanisms to identify the players behind any incidental TCP/IP communications (often as little as a single normal SYN) without interfering in any way. Version 3 is a complete rewrite of the original codebase, incorporating a significant number of improvements to network-level fingerprinting, and introducing the ability to reason about application-level payloads (e.g., HTTP). The tool can be operated in the foreground or as a daemon, and offers a simple real-time API (via unix domain sockets) for third-party components that wish to obtain additional information about the actors they are talking to.

Package information

Ports path
security/p0f3
Package architecture
amd64
Maintainer
The OpenBSD ports mailing-list <ports@openbsd.org>
Categories
security, net
Available flavors
None listed

These are ports metadata. Binary availability depends on the release, architecture and mirror. Build and test dependencies are not an installation checklist.

Direct dependencies

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