Firewalls and Routers

A firewall is a solid defense against online threats that blocks bad things from reaching your computer. Simply put, a firewall is a barrier between a computer and the Internet. When you visit a suspicious site, the firewall either filters out the dangerous data or blocks the connection entirely. A properly chosen and configured firewall provides a good measure of protection against hackers and other online threats.

What you should know about firewalls

There are three basic types of firewalls—each has pros and cons. Your options include:

• Software firewalls can be installed on individual computers and are a good choice for most home users. However, most software firewalls must be purchased, and each computer connected to the Internet may need its own copy. Also, installation and set up may be required. As a Comcast High-Speed Internet subscriber, you can download the free McAfee Security Suite that includes firewall software protection to help conceal your computer from hackers and spyware.

  

• Hardware routers provide firewall protection to multiple computers connected to the Internet and may offer other connectivity benefits. However, their wiring can create clutter on already crowded desktops.
• Wireless routers allow "over the air" connections between your computer, other devices, and the Internet. These routers may or may not include a built-in firewall, so be sure to check the features of your model carefully. Also keep in mind that wireless routers broadcast information using radio signals that, if left unprotected, can be intercepted by unauthorized individuals.