Setup (OS X)

1. From the Firefox menu, select Firefox -> Preferences...
2. Click on the Advanced tab and then on its Network subtab. In the "Connection -> Configure how Firefox connects to the Internet" section, click the "Settings..." button.
   
3. In the opened dialog, select "Automatic proxy configuration URL", enter http://www.ut.ee/utlib.pac in the dialog box.
   
4. Click OK and close the preferences dialog from the corner of the window.

Disconnecting from UT system proxy

1. To stop using the university proxy, open the same dialog and select Direct connection to the Internet.