scanlogd

6.8easy start · #11of 38
in Intrusion Detection and Prevention Software

Free to practise onyes
Well documentedyes
Runs where you workno

Runs on Linux, self-hosted.

scanlogd is ranked #11 of 38 in intrusion detection and prevention software on The Geeks Club. It runs on Linux, Self-hosted. There is a free plan.

scanlogd plans and pricing

All plans

scanlogd Free No price stated · commercial support available by quote openwall.com · 9 Oct 2026

Compared on intrusion detection and prevention software

Free plan: Yes
Deployment model: software
Network scope: multi-scope
Inline blocking: No
Supported platforms: linux

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The record

Purpose: scanlogd is a TCP port scan detection tool.
Safety: The project says scanlogd is designed to be totally safe to use.
Capture interfaces: It supports Linux raw sockets, libnids, and libpcap for packet capture.
Fragmented packets: The project discourages using libpcap alone and recommends libnids for non-Linux systems or monitoring an entire network, to handle fragmented IP packets.
Latest release: The official page lists scanlogd 2.2.8 as the release available for download.
Source and signatures: The page provides release files and signatures, links to an Openwall file archive, and says the source code can be browsed on GitHub.
Distribution availability: The page says scanlogd is part of Owl, Debian GNU/Linux, Gentoo Linux, ALT Linux distributions, and OpenWrt.
Ports: The page also lists scanlogd ports in the OpenBSD and FreeBSD ports collections.
Windows build: The page links to a contributed scanlogd 2.2 pre-compiled for Win32.
Documentation: The page recommends reading the scanlogd(8) manual page and the original Phrack Magazine article.
Commercial support: Openwall says commercial support is available to help configure, compile, and install scanlogd and its third-party raw IP networking libraries.
Support pricing: Openwall lists service pricing as US $250/hour with a 6-hour minimum, or US $9,000/week, and says fixed-price quotes are available for sufficiently specific projects.
Release compatibility: The 2.2.8 announcement says the release avoids recent glibc deprecation warnings while retaining support for older glibc and non-Linux systems.
Price from: Free

Where it ranks on The Geeks Club

Best Intrusion Detection and Prevention Software in 2026#11 of 38

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Sources

openwall.com/scanlogd/· checked 9 Oct 2026
openwall.com/services/· checked 9 Oct 2026
openwall.com/lists/announce/2021/03/10/2· checked 9 Oct 2026