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tcpserver: Secure, Flexible Daemon Management
The (in)Famous DJB
tcpserver is part of the ucspi-tcp suite of tools by none other than the famous, and infamous, Daniel J. Bernstein. Professor Bernstein seems to inspire strong passions in the tech community; some refuse to use his software because they do not like the author. Other objections are that his programs install themselves in non-standard file locations, and that he keeps too tight a grip on the code. Personality issues aside, I find that his programs are lean, fast, secure, and worthy on their own merits. A special item of note is Professor Bernstein led the suit against the United States Government against export controls on encryption software, and won.
DJB's security model is based on a zero-trust premise. His programs don't even trust themselves- each function is isolated from other parts of the program. They run in user accounts with restricted rights; services that require root access are as restricted and limited as possible. Any successful intrusion will be severely limited, if an intruder can get in at all.
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