

Wietse Venema
Author of TCP Wrapper and Postfix
Defensive software that a generation of admins just ran
Rating
90Impact score
Domains
Host securityMail securityForensics
Scouting report
Wrote TCP Wrapper, which for years was the access control on a very large share of Unix hosts on the internet, and Postfix, a mail server written from the start around privilege separation. Co-wrote SATAN with Dan Farmer and later the Coroner’s Toolkit and Forensic Discovery, giving incident responders their first real open tooling.
Curator’s note
Shipped the defence, then shipped the tools to work out how it was beaten.
Portrait
Painted from a photograph of Wietse Venema by Alexandre Dulaunoy, licensed CC BY-SA 2.0.
Sources
- 01Wietse Venema en.wikipedia.org
- 02Postfix postfix.org