Application firewalls Definitions

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  • C

    cable modem

    A cable modem is a device that enables you to hook up your PC to a local cable TV line and receive data at about 1.5 Mbps.

  • N

    next-generation firewall (NGFW)

    A next-generation firewall (NGFW) is a hardware- or software-based network security system that is able to detect and block sophisticated attacks by enforcing security policies at the application level, as well as at the port and protocol level.

  • P

    proxy firewall

    A proxy firewall is a network security system that protects network resources by filtering messages at the application layer. A proxy firewall may also be called an application firewall or gateway firewall.  

  • W

    Web application firewall (WAF)

    A Web application firewall (WAF) is a firewall that monitors, filters or blocks traffic to and from a Web application. WAFs are especially useful to companies that provide products or services over the Internet.

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