What is a firewall? Why do I need one for my computer?Share & Print
A firewall is a protective barrier that prevents unwanted sources such as viruses, worms, trojans and other malicious code from accessing your computer or network. Firewalls can be either hardware-based or software-based. These two types of solutions can also be used in conjunction with one another.
C&IT highly recommends that you use a firewall. Newer operating systems (such as Windows 8.1, 10) and Mac OS X 10.4 and above) have software-based firewalls built-in. To configure these built-in firewalls, click the provided links below.
Windows 8.1, 10
If you have difficulties turning on your firewall or have a system not listed
above, please contact the C&IT Help Desk.