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snort

Snort is a free open source network intrusion detection system (IDS)[5] created in 1998 by Martin Roesch, former founder and CTO of Sourcefire.[6][7] Snort is now developed by Cisco, which purchased Sourcefire in 2013, at which Roesch is a chief security architect.[8][9][10]

In 2009, Snort entered InfoWorld‘s Open Source Hall of Fame as one of the “greatest [pieces of] open source software of all time”.[11]

 

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