Snort is a free and open source network intrusion prevention system (NIPS) and network intrusion detection system (NIDS) created by Martin Roesch in 1998. Snort is now developed by Sourcefire, of which Roesch is the founder and CTO, and which has been owned by Cisco since 2013.
In 2009, Snort entered InfoWorld's Open Source Hall of Fame as one of the "greatest [pieces of] open source software of all time".
Maps, Directions, and Place Reviews
Uses
Snorts open source network-based intrusion detection system (NIDS) has the ability to perform real-time traffic analysis and packet logging on Internet Protocol (IP) networks. Snort performs protocol analysis, content searching and matching. These basic services have many purposes including application-aware triggered quality of service (AATQoS), to de-prioritize bulk traffic when latency-sensitive applications are in use.
The program can also be used to detect probes or attacks, including, but not limited to, operating system fingerprinting attempts, semantic URL attacks, buffer overflows, server message block probes, and stealth port scans.
Snort can be configured in three main modes: sniffer, packet logger, and network intrusion detection. In sniffer mode, the program will read network packets and display them on the console. In packet logger mode, the program will log packets to the disk. In intrusion detection mode, the program will monitor network traffic and analyze it against a rule set defined by the user. The program will then perform a specific action based on what has been identified.
Monitor Network Traffic Linux Video
Third-party tools
There are several third-party tools interfacing Snort for administration, reporting, performance and log analysis:
- Snorby - a GPLv3 Ruby on Rails application (also has a commercial version: threatstack)
- BASE
- Sguil (free)
- Aanval (commercial)
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