Randall

A firewall is a computer security tool that uses rules to control traffic between computer systems. A firewall protects computers by blocking unauthorized access to network resources, such as files, websites, and servers.

A firewall can help protect your computer from unauthorized access by hackers. Hackers can use a firewall to enter your computer and steal your data.

A firewall can also help protect your computer from viruses and other malware.

A firewall can slow down the speed of your computer. If you need to access the Internet, you may need to disable your firewall.

A firewall is not a guarantee against hackers. You should also use other security measures, such as passwords, firewalls, and anti-virus software.