“In computing, port knocking is a method of externally opening ports on a firewall by generating a connection attempt on a set of prespecified closed ports. Once a correct sequence of connection attempts is received the firewall rules are dynamically modified to allow the host which sent the connection attempts to connect over specified port(s).” –Source: Wikipedia
Welcome to my port knocking page! I’m pleased that you are also interested in port knocking and this site, perhaps after attending one of my presentations on the topic or upon searching for the topic on your favorite search engine.
For more information, you should check out http://www.portknocking.org.
