by Paul Ducklin
The open source operating system distribution OpenBSD is well-known amongst sysadmins, especially those who manage servers, for its focus on security over speed, features and fancy front-ends.
Fittingly, perhaps, its logo is a puffer fish – inflated, with its spikes ready to repel any wily hackers who might come along.
But the OpenBSD team is probably best known not for its entire distro, but for the remote access toolkit OpenSSH that was originally created in the late 1990s for inclusion in the operating system itself.
SSH, short for secure shell, was originally created by Finnish computer scientist Tatu Ylönen in the mid-1990s in the hope of weaning sysadmins off the risky habit of using the Telnet protocol.
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