An adversary who can watch port knocking sequences is one reason why SPA was developed: http://www.cipherdyne.org/fwknop/docs/fwknop-tutorial.html#what-is-PK h

An adversary who can watch port knocking sequences is one reason why SPA was developed: http://www.cipherdyne.org/fwknop/docs/fwknop-tutorial.html#what-is-PK http://www.cipherdyne.org/fwknop/docs/fwknop-tutorial.html#w...