Snort (software)

Snort
DeveloperCisco Systems
Stable release
Snort 2.x (Legacy)2.9.19.0 / December 6, 2021 (2021-12-06)
Snort 3.x3.12.2.0 / April 23, 2026 (2026-04-23)
Written inC++ (since version 3.0), C
Operating systemcross-platform: Unix-like (Linux, BSD, macOS), Windows
PlatformIA-32, x86-64
Type
LicenseGPLv2+
Websitewww.snort.org
Repository

Snort is a network intrusion detection system (IDS) and intrusion prevention system (IPS) created in 1998 by Martin Roesch, founder and former CTO of Sourcefire. Snort is now developed by Cisco, which purchased Sourcefire in 2013. It is free and open-source software with a GNU General Public License version 2.

In 2009, Snort entered InfoWorld's Open Source Hall of Fame as one of the "greatest [pieces of] open source software of all time".