Speaking of network security legends... does anybody stll know of one of the early #OpenSource #IDS projects developed by #MarcusRanum in the late 1990s?

The #NetworkFlightRecorder (NFR) was mentioned in almost any scientific contribution to network intrusion detection systems (#NIDS) at least until 2005.

https://www.usenix.org/legacy/publications/library/proceedings/lisa97/full_papers/01.ranum/01_html/main.html