About: http://webisa.webdatacommons.org/166045446

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	There are four main types of firewalls: packet-filters, application gateways, circuit-level gateways, and other firewalls.
http://www.w3.org/ns/prov#wasQuotedFrom	infosecinstitute.com