Canvas Defender Firefox

Windows provides a built-in firewall, which controls how programs access the Internet. If Windows Firewall doesn't permit Firefox to make connections, Firefox generates a 'Server not found' error when you try to browse to websites.

Note: This article only applies to Windows. To see instructions, choose the Windows version from the dropdown menu above.

Table of Contents

  • 5Windows 7
  • 6Windows Vista
Canvas Defender Firefox

To see if you're running Windows Firewall:

  1. Right-click the Windows icon. A menu will appear.
  2. Select Control Panel from the menu. The Control Panel will appear.
  3. In the Control Panel, select System and Security.
  4. In System and Security, select Windows Firewall.

Canvas Defender helps prevent this by creating a unique and persistent noise that hides your real canvas fingerprint. Note that at the time of writing, Mozilla has promised upcoming versions of Firefox will feature built-in canvas fingerprinting protection. The people behind Canvas Defender cater to spammers, and it shows because they spammed their own addon page with fake, generic praise reviews until it was reported and Mozilla removed the bogus reviews. Canvas defender is a browser addon that tries to defeat such tracking by adding random noise to your typing pattern. This has no effect on your online experience. This addon is different to others, in that it does not attempt to block the fingerprinting altogether, but rather to confuse it.

If you're running Windows Firewall and having connection problems in Firefox:

  1. On the left side of the Windows Firewall panel, click Allow an app or feature through Windows Firewall. The Allowed apps panel will appear.
  2. Click the button.
  3. Find Mozilla Firefox in the list of programs. If it is there, click to select it. If not, skip the next step.
  4. With Mozilla Firefox (or firefox.exe) selected, click the button. Confirm that you want to remove the entry.
  5. Click the button. The Add a Program window will appear.
  6. In the Add an app window, click the button.
  7. Navigate to the Firefox program directory (e.g. C:Program FilesMozilla Firefox) and double-click on firefox.exe.
  8. Click the button.
  9. Click the button to close the Allowed apps panel.

To see if you're running Windows Firewall:

  1. From the Start Screen, click the Desktop tile. The Desktop view will open.
  2. From the Desktop, hover in the lower right-hand corner to access the Charms.
  3. Select Control Panel from the Settings charm. The Control Panel window will open.

  4. Click on System and Security. The System and Security Panel will appear.
  5. Click on Windows Firewall. The Windows Firewall panel will appear.
  6. If you see a green check mark, you are running Windows Firewall.

If you're running Windows Firewall and having connection problems in Firefox:

  1. On the left side of the Windows Firewall panel, click Allow a program or feature through Windows Firewall. The Allowed Programs panel will appear.
  2. Click the button.
  3. Find Mozilla Firefox in the list of programs. If it is there, click to select it. If not, skip the next step.
  4. With Mozilla Firefox (or firefox.exe) selected, click the button. Confirm that you want to remove the entry.
  5. Click the button. The Add a Program window will appear.
  6. In the Add a Program window, click the button.
  7. Navigate to the Firefox program directory (e.g. C:Program FilesMozilla Firefox) and double-click on firefox.exe.
  8. Click the button.
  9. Click the button to close the Allowed Programs panel.

Checking for Windows 7 Firewall

Canvas defender firefox update

To see if you're running Windows Firewall:

  1. Click the Windows icon, and select . The Control Panel window will appear.
  2. Click on System and Security. The System and Security Panel will appear.
  3. Click on Windows Firewall. The Windows Firewall panel will appear.
  4. If you see a green check mark, you are running Windows Firewall.

Configuring Windows 7 Firewall

Canvas Defender Firefox

If you're running Windows Firewall and having connection problems in Firefox:

  1. On the left side of the Windows Firewall panel, click Allow a program or feature through Windows Firewall. The Allowed Programs panel will appear.
  2. Click the button.
  3. Find Mozilla Firefox in the list of programs. If it is there, click to select it. If not, skip the next step.
  4. With Mozilla Firefox (or firefox.exe) selected, click the button. Confirm that you want to remove the entry.
  5. Click the button. The Add a Program window will appear.
  6. In the Add a Program window, click the button.
  7. Navigate to the Firefox program directory (e.g. C:Program FilesMozilla Firefox) and double-click on firefox.exe.
  8. Click the button.
  9. Click the button to close the Allowed Programs panel.

Checking for Windows Vista Firewall

To see if you're running Windows Firewall:

  1. Click the Windows icon, and select Control Panel. The Control Panel window will appear.
  2. Click on the System header. The Security Panel will appear.
  3. Click on the Windows Firewall header. The Windows Firewall panel will appear.
  4. If you see a green check mark and the message Windows Firewall is helping to protect your computer, you are running Windows Firewall.

Configuring Windows Vista Firewall

If you're running Windows Firewall and having connection problems in Firefox:

  1. On the left side of the Windows Firewall panel, click Allow a program or feature through Windows Firewall. The Windows Firewall Settings window will appear.
  2. Find Mozilla Firefox (or firefox.exe) in the list of programs. If it is there, click to select it. If not, skip the next step.
  3. With Mozilla Firefox selected, click the button. Confirm that you want to delete the entry.
  4. Click the button. The Add a Program window will appear.
  5. In the Add a Program window, click the button.
  6. Navigate to the Firefox program directory (e.g. C:Program FilesMozilla Firefox) and double-click on firefox.exe.
  7. Click the button to close the Add a Program window.
  8. In the Windows Firewall Settings window, click to select the General tab.
  9. Ensure that Block all incoming connections is not selected.
  10. Click the button to close the Windows Firewall Settings window.

To see if you're running Windows Firewall:

Canvas Fingerprint Defender Firefox

Canvas Defender Firefox

Canvas Defender Chrome

  1. Click on the Windows Start button, and select Control Panel. The Control panel window will appear.
  2. Click on the Security Center link. The Security Center will appear.

  3. If the Firewall header says ON, you are running Windows Firewall.

If you're running Windows Firewall and having connection problems in Firefox:

  1. Check Windows Firewall is ON.
  2. In the Security Center, click Windows Firewall. The Windows Firewall window will open.
  3. Select the Exceptions tab.

  4. Find Mozilla Firefox (or firefox.exe) in the list of programs. If it is there, click to select it. If not, skip the next step.
  5. With Mozilla Firefox selected, click the button. Confirm that you want to delete the entry.
  6. Click the button.
  7. In the Add a Program window, click the button.
  8. Navigate to the Firefox program directory (e.g. C:Program FilesMozilla Firefox) and double-click on firefox.exe.
  9. Click the button to close the Add a Program window.
  10. Click the button to close the Windows Firewall Settings window.

Canvas Fingerprint Defender Firefox


Based on information from Firewalls (mozillaZine KB)