About Marcus J. Ranum
Marcus J. Ranum is an American computer and network security researcher. He is credited with a number of innovations in firewalls, including building the first Internet email server for the whitehouse.gov domain, and intrusion detection systems. He has held technical and leadership positions with a number of computer security companies, and is a faculty member of the Institute for Applied Network Security. Ranum helped design and implement Digital Equipment Corporation's Secure External Access Link (SEAL) (later AltaVista firewall), regarded as the first commercial bastion host firewall, in 1990. It was at TIS that Ranum became responsible for the whitehouse.gov Internet email site.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.