If you dont able to access the internet on Mozilla firefox? There may be chances that Norton blocking firefox.Then it is required to change the status of firefox from block to enable. Follow the easy steps to resolve the issue. Click on the norton application and open the setting option. Find and Locate the firewall option on the left side.Select the program control tab.Then select the mozilla firefox.Select the allow option from the dropdownlist.Then at last click on the apply button.After finishing these steps, restart your device and check that you are able to access the internet on Mozilla Firefox or not.