Dennis Fisher talks with security pioneer Marcus Ranum about writing an early Internet firewall at DEC, the security gold-rush era of the 1990s and early 2000s, why he never patented most of the ideas he has come up with and how he found peace of mind. - See more at: https://threatpost.com/how-i-got-here-marcus-ranum/112924#sthash.YKgN9qhE.dpuf