Check a website's route: In some cases, it's useful to know whether a website is unavailable because of the proxy service or because of the server's network settings.
Debugging the Proxy ACLs. To enable detailed debugging for Access Control Lists (ACLs) in Proxy service, you have to adjust the debugging level to show more information about how ACLs are being evaluated
Error accessing the Internet via proxy By default, Artica will test Internet access by trying to connect to the Microsoft server www.msftncsi.com. If it fails to do so, it will display an error and a report in the Web console.