5/2/2023 0 Comments What is firewall in networkingNot only do firewalls keep malicious code out of your network, but some, because they can examine data both as it comes in and goes out, can also prevent an attacker from using your system to spread harmful code.įirewall filters keep harmful data outside your computer. This is accomplished using a few different methods, including packet filtering, a proxy service, and stateful inspection.įirewalls can be either hardware or software, and they form a wall between your network and the internet or between segments of your network and the rest of your system. Similarly, a firewall’s protection comes from monitoring and regulating traffic that goes in and out of your network. If the guard sees one, he or she keeps the criminal out of the building. A firewall shields your network because it acts as a 24/7 filter, scanning the data that attempts to enter your network and preventing anything that looks suspicious from getting through.Ī simple way to explain how a firewall works is to think of it as a security guard with intimate knowledge of millions of potential criminals. The answer to what is a firewall is a firewall helps protect your network from attackers.
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