scanlogd

About

scanlogd is ranked #16 of 38 in intrusion detection and prevention software on Inferse. It runs on Linux, Self-hosted. There is a free plan.

Compared on intrusion detection and prevention software

Free plan

Yesopenwall.com

Deployment model

softwareopenwall.com

Network scope

multi-scopeopenwall.com

Inline blocking

Noopenwall.com

Supported platforms

linuxopenwall.com

Facts

Purpose

scanlogd is a TCP port scan detection tool.openwall.com · 9 Oct 2026

Safety

The project says scanlogd is designed to be totally safe to use.openwall.com · 9 Oct 2026

Capture interfaces

It supports Linux raw sockets, libnids, and libpcap for packet capture.openwall.com · 9 Oct 2026

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.openwall.com · 9 Oct 2026

Latest release

The official page lists scanlogd 2.2.8 as the release available for download.openwall.com · 9 Oct 2026

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.openwall.com · 9 Oct 2026

Distribution availability

The page says scanlogd is part of Owl, Debian GNU/Linux, Gentoo Linux, ALT Linux distributions, and OpenWrt.openwall.com · 9 Oct 2026

Ports

The page also lists scanlogd ports in the OpenBSD and FreeBSD ports collections.openwall.com · 9 Oct 2026

Windows build

The page links to a contributed scanlogd 2.2 pre-compiled for Win32.openwall.com · 9 Oct 2026

Documentation

The page recommends reading the scanlogd(8) manual page and the original Phrack Magazine article.openwall.com · 9 Oct 2026

Commercial support

Openwall says commercial support is available to help configure, compile, and install scanlogd and its third-party raw IP networking libraries.openwall.com · 9 Oct 2026

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.openwall.com · 9 Oct 2026

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.openwall.com · 9 Oct 2026

Where it ranks on Inferse

• Best Intrusion Detection and Prevention Software in 2026#16 of 38

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