If I have a firewall, do I need an antivirus?
Yes. A firewall will not protect you from viruses and other malware. A firewall limits outside network access to a computer or local network by blocking or restricting ports. Firewalls help prevent your computer from communicating with other computers on the network and Internet.
If you want to truly protect your computer from potential threats, we suggesting having both a firewall and antivirus program installed on your computer. Or, at a minimum, we recommend that firewall functionality be enabled on your router.