What are the different kinds of Firewalls?

Question

Accepted Answer

Firewalls are network security systems that monitor and control incoming and outgoing network traffic based on predetermined security rules.

Types of firewalls include packet filtering firewalls, stateful inspection firewalls, proxy firewalls, and next-generation firewalls.
Packet filtering firewalls examine packets of data and decide whether to forward or discard them based on predetermined criteria.
Stateful inspection firewalls keep track of the state of active connections and make decisions based on the context of the traffic.
Proxy firewalls act as intermediaries between internal and external networks, filtering traffic based on application-layer data.
Next-generation firewalls combine traditional firewall functionality with additional features such as intrusion prevention, application awareness, and deep packet inspection.

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