Home page: http://www.ranum.com/

Wikipedia: http://en.wikipedia.org/wiki/Marcus_J._Ranum

TechTarget Bio page: http://www.techtarget.com/contributor/Marcus-J-Ranum

Threatpost Podcast, How I Got Here: https://threatpost.com/how-i-got-here-marcus-ranum/112924/

Interview on Silver Bullet Podcast: https://www.cigital.com/podcasts/show-111-an-interview-with-marcus-ranum/

Interviews on Security Weekly podcast:

     http://wiki.securityweekly.com/wiki/index.php/Episode133#Interview:_Marcus_Ranum

     http://wiki.securityweekly.com/wiki/index.php/Episode400#Interview:_Marcus_Ranum_10:00AM-10:45AM

     http://wiki.securityweekly.com/wiki/index.php/Episode480#Interview:_Marcus_J._Ranum.2C_Tenable_Inc.-_6:00PM-6:30PM

From his website:

"Marcus J. Ranum is a world-renowned expert on security system design and implementation. He is recognized as an early innovator in firewall technology, and the implementor of the first commercial firewall product. Since the late 1980's, he has designed a number of groundbreaking security products including the DEC SEAL, the TIS firewall toolkit, the Gauntlet firewall, and NFR's Network Flight Recorder intrusion detection system. He has been involved in every level of operations of a security product business, from developer, to founder and CEO of NFR. Marcus has served as a consultant to many FORTUNE 500 firms and national governments, as well as serving as a guest lecturer and instructor at numerous high-tech conferences. In 2001, he was awarded the TISC "Clue" award for service to the security community, and the ISSA Lifetime Achievement Award. Marcus works for Tenable Network Security, Inc. He serves as a technology advisor to a number of start-ups, established concerns, and venture capital groups.