PC Doctor September 14, 2018

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Dear PC Doctor:

Recently, I tried to open some image files on my computer and got a message indicating that I can’t because the Windows Firewall isn’t activated. What’s the Windows Firewall?



Dear Kay:

According to Microsoft’s support site, the Windows Defender Firewall helps prevent your computer from being vulnerable to unauthorized access. Dummies.com offers a little more explanation: “A firewall, at its most basic level, permits or denies communications between computers, between networks, or between computers and networks (for example, your home computer and the Internet) based on the firewall’s configuration rules.” Usually, the firewall allows or denies communications based on ip addresses and the rules set up within the firewall. Windows Firewall, by default, allows all outbound connections, and permits only established inbound connections (that is, an inbound connection that is in direct response to an outbound connection initiated from your computer or network).

Microsoft recommends turning the firewall on.

To turn it on, go to the Start icon at the bottom left of your screen and choose Settings > Update & Security > Windows Security > Firewall & network protection. Choose a network profile, and then under Windows Defender Firewall, switch the setting to On or Off.

If you are part of a network, it’s recommended that you check with your network administrator before completing these steps.

Until next time,
Happy Computing!

PC Doctor

Editor's Note: Questions should be directed to PC Doctor, care of the Athol Public Library, info@athollibrary.org or Athol Public Library, 568 Main St., Athol, Mass. 01331, or dropped off at the library.