Note: We are using Firefox 35.0.1 to demonstrate the changes, but these steps should be similar for all versions of Firefox.
Follow these instructions to configure Firefox to use a Proxy Server:
Open the Firefox menu in the top right corner and click on Options.
Click on the Advanced tab in the top right corner, and then click on the Network tab.
In the Network tab, click on Settings.
This will display the Proxy Connection Settings window.
In Connection Settings, click on Manual proxy configuration.
In the HTTP Proxy field, enter the IP Address of your Proxy Server, and the Proxy Server Port Number in the Port field. You will receive the IP Address and Port Number of your Proxy Server(s) in a separate email.
Press OK and OK to save your settings.
Now when you surf, you will be surfing by using the Proxy Server. The first time you surf, depending on your account's authentication settings, you may be asked to enter your credentials, which were supplied in your Welcome Email.
To stop using the Proxy Server, repeat the above steps, but select "No Proxy" on the Proxy Connection Settings window.