USENIX ;login: Article on fwknop
15 December, 2004
I have written an article for USENIX ;login: Magazine
entitled "Combining Port Knocking and Passive OS Fingerprinting with fwknop. Fwknop is the first
port knocking implementation to combine port knocking and passive OS fingerprinting into a
single piece of software. This allows you to do things like only allow Linux systems to connect
to your SSH daemon.
