It monitors attempts to gain access to your operating system and blocks unwanted traffic or unrecognized sources. What does a firewall do?Ī firewall acts as a gatekeeper. The topics below can help you learn what firewalls do and determine the level of protection that will help keep your computer and the data on it safe and secure. The key is determining how much protection you need.
Not only does a firewall block unwanted traffic, it can also help block malicious software from infecting your computer.įirewalls can provide different levels of protection.
A firewall is a security device - computer hardware or software - that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access to the private data on your computer.
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