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Answer Posted / toni
A Firewall is usually a networking device that protects
networks by blocking unwanted traffic, and monitoring and
controlling useful, desirable traffic. The Firewall
functions as a filter as traffic moves from one network to
another. It blocks or allows specific protocols and data
types, and inspects permitted traffic flow for networking
protocol compliance as well as adherence to a business's
information systems usage policy. This ensures that network
traffic acts in its intended function.
Routers and switches run Cisco IOS, and the IOS Firewall is
a feature that can be configured on them by software. This
feature allows routers and switches to work on a stateful
firewall basis.
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