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Firewall is a computer security technology that is used to protect a computer network from unauthorized access. Firewall technology can be used to protect the computer network from unauthorized access by unauthorized users, to prevent the spread of computer viruses, and to protect the computer network from attacks.

Firewall technology can be used to protect the computer network from unauthorized access by unauthorized users, to prevent the spread of computer viruses, and to protect the computer network from attacks.

The use of firewall technology can help to protect the computer network from a number of vulnerabilities, including unauthorized access, the spread of computer viruses, and attacks. The use of firewall technology can help to protect the computer network from a number of vulnerabilities, including unauthorized access, the spread of computer viruses, and attacks.