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Firewall is a security technology that helps protect your computer from unauthorized access. It works by blocking ports and protocols that could be used by hackers.

Some people believe that firewall is a good security technology because it can help protect your computer from unauthorized access. Others believe that firewall can be a bad security technology because it can interfere with the normal operation of your computer.

The conclusion of this article is that firewall is a security technology that can help protect your computer from unauthorized access. However, it is important to remember that firewall can also interfere with the normal operation of your computer.