About: http://webisa.webdatacommons.org/80826892

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Port knocking is a method of establishing a connection to a networked computer that has no open ports.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com