Fwknop - Port Knocking Tool with Single Packet Authorization

LinuxSecurity.com: Port Knocking came about in around 2003, but it has various weaknesses. There are plenty of implentations though (some quite advanced). Most of the problems are fixed however by fwknop! fwknop stands for the "FireWall KNock OPerator", and implements an authorization scheme called Single Packet Authorization (SPA). This method of authorization is based around a default-drop packet filter (fwknop supports both iptables on Linux systems and ipfw on FreeBSD and Mac OS X systems) and libpcap. Have you ever tested the port knocking software called "FireWall KNock OPerator? The interesting feature of it is that it only needs a single packet to get information on a host.

Related Items