(?A major part of any enterprise security strategy is implementing and maintaining firewalls, so firewalls play a major role in the implementation of network security. Firewalls are generally located at the edge of an enterprise network, which blocks the internal network and the Internet from other external networks, and restricts network access to maintain the internal network of the enterprise. The purpose of setting a firewall is to set up a unique channel between the internal network and the external network to simplify network security management.)
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