How Can I Tell If I'm Behind a Firewall?
By Tiffany Garden
A firewall is a method of protecting your computer from unauthorized network and Internet traffic. The firewall blocks sites, programs and ports to control the flow of traffic on the network. While a firewall can help prevent hackers from gaining access to your personal information, at times the firewall can also prevent programs that require network and Internet access from working properly. A big example of this comes from online games, which may have multiplayer access restricted until you open the ports properly through the firewall.
Click "Start" and "Control Panel."
Choose the "Security" section. Select "Windows Firewall."
Check the setting "Turn Windows Firewall on or off" to see if your built-in Windows firewall is turned on.
Check your system tray for firewall software running in the background. Examples of icons you need to look for in your tray include Zone Alarm and SonicWall.
Check the devices connected to your computer and network equipment. Firewalls don't have to be part of software, you can have a physical firewall blocking access to your computer as well. Your home network router may also have a physical firewall included on the device.
Tiffany Garden has been a freelance writer since 2002, working in the commercial copywriting field. She has been published in a number of technical and gaming magazines, as well as on numerous websites. She also runs her own websites on a number of subjects, runs a handcrafted jewelry business and is a CompTIA A+ Certified computer technician.