Firewalls can be configured to block data from certain locations (i.e., computer network addresses), applications, or ports while allowing relevant and necessary data through. Firewalls can also prevent malicious software from accessing a computer or network via the internet. However, you can restrict outside access to your computer-and the information on it-with a firewall.įirewalls provide protection against outside cyber attackers by shielding your computer or network from malicious or unnecessary network traffic.
When your computer is accessible through an internet connection or Wi-Fi network, it is susceptible to attack.
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