How to Lock Firefox With a Password

By Techwalla Contributor

Want total control over who can access the Internet with Firefox? Learn how to lock Mozilla Firefox with a password quickly and easily. Make sure no one else can access the Internet through Firefox without your permission.

Step 1

Close Firefox if it's running. To lock Firefox with a password, you must first make sure it isn't running. If you're unsure of the program's status, press the "Ctrl," "Alt" and "Delete" keys simultaneously to view all programs running.

Step 2

Navigate to the "Start" menu and right-click on the "Firefox" icon. Select "Properties" from the pop-up menu. The Mozilla Firefox Properties dialog appears.

Step 3

Click the "Security" tab.

Step 4

Highlight the user or usergroup you wish to deny access to the program and click the "Edit" button. If the name of the user doesn't appear, click "Add," type the username and click "Check Names." You should now be able to add or deny access to the program for the selected user by clicking options in the Permissions box. Edit the options for each user or user group you wish to deny access. Click "Apply" after editing for each user. When finished, click "OK." Next, click "OK" to approve the changes. You have locked the program down and users must now access your unblocked user account by password to access the program. After logging into your user account, you won't have to supply the password to access the program.

Step 5

To verify that Firefox is locked, attempt opening the program in a blocked account. Do this by logging out of your user account and logging in as the user you have locked out of Firefox. If you can't access the program, you have successfully locked Firefox with a password.

Tips & Warnings

  • To prevent Internet access, you must repeat the procedure for other browsers installed on your computer, such as Internet Explorer.
  • To modify security settings, you must be logged in to an administrator account.