Nov 8, 2018

A set of related programs, located at a network gateway server, that protects the resources of private networks from other networks. Firewalls may be application/proxy, packet-filtering, or stateful-based. Examples of firewalls are Cisco PIX, Check Point Firewall, Juniper NetScreen and Cyberguard. (Though they contain some firewall functionality, routers are not included in this definition.)

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