About: http://webisa.webdatacommons.org/403802076

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 by which a remote computer (client) communicates with another computer (server) across closed ports.
http://www.w3.org/ns/prov#wasQuotedFrom	portknocking.org