Having a personal firewall can quell the jitters you might have about your computer getting attacked. An Internet connection, especially an always-on type like broadband, is the entry point for hackers who want to get to your computer. A firewall polices your connection and is an essential tool in a basic computer security arsenal, along with an anti-virus tool. The book “Network Security First-Step” likens a firewall to an Internet border security officer because of its role in disallowing the wrong things from entering your computer from a network or the Internet. Writer Bio
