Ranum's Network Flight Recorder (see Resources), as opposed to host-based detectors such as Tripwire.
CNN: Analysis: Linux security
2.
"It's true that it's impossible to completely defend against denial of service attacks and still be accessible, " says Marcus Ranum, chief security officer of Tenable Security.
FORBES: Magazine Article
3.
Markus Ranum, a veteran of the network security industry and a noted critic of the cyber war hype, points to another similarity with the Cold War.