Working with Firewalls

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What is a firewall?

  1. A firewall is a network security system that establishes a barrier between a trusted, secure internal network and another network that may not be secure.
  2. Additionally, a firewall can help prevent hackers or malicious software (such as worms) from gaining access to your computer through a network or the Internet. A firewall can also help stop your computer from sending malicious software to other computers.

 

 

Firewall for Windows

How do I turn it on/off? (Windows 7)

  1. Click the Start button, go to Control Panel. Find the search box and type “firewall” and then click on Windows Firewall.
  2. Click the Turn Windows Firewall on or off button and type in the Administrator password if prompted.
    1. Remember to turn it off for each location you that you want to stop protecting and then click OK.
  3. Navigate the side pane to customize any specific settings you want.
  4. If you are unsure which settings your computer should have, you can always click the Restore Defaults button.

How do I turn it on/off? (Windows 8/10)

  1. The procedure is the same as for Windows 7, but getting to the control panel is different. You can just use the search function and go from there.

Firewall for MAC

How do I turn it on/off? (MAC OS X v10.6 and later)

  1. Go to System Preferences.
  2. Go to Security or Security & Privacy
  3. Go to the Firewall tab
  4. You may have to unlock the tab by clicking the lock in the lower left corner and then entering the administrator password and username.
  5. Click Turn on/off Firewall
  6. Go to Advanced to customize your configuration

Allowing certain applications (MAC)

  1. Go to System Preferences.
  2. Go to Security or Security & Privacy
  3. Go to the Firewall tab
  4. You may have to unlock the tab by clicking the lock in the lower left corner and then entering the administrator password and username.
  5. Go to Firewall Options
  6. Click on Add Application (+)
  7. Select your desired apps and click Add then OK.
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