Technology
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Firewall Facts:
Three types of firewalls prevent hackers from accessing secure networks.
Packet-filtering (or proxy) firewalls are the fastest. By opening ports associated with applications, they allow only traffic destined for the open ports into the network.
Stateful inspection firewalls combine the functionality of packet filtering with the ability to ensure that one network session is established per user
Application firewalls, the most thorough form of protection, allow or deny packets based on their content.
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