1.Navigate to Proxy Settings on your device and open it up.
1. Click On Manual Proxy Setup: Use a proxy Server then Set Up
1.Click the toggle to use a proxy server. Then either enter the address below or the AIT one ( http://filter.aitn.co.uk ) with the port 8081
2. Click on save.
To Disable and use your laptop on a home internet connection simply untoggled the Use a proxy server option.