Automatize Internet Connection via redirecting/landing page

Question

Hi folks,

 

I have a computer that is connected to internet with wifi stick. If internet connection is disconnected (wifi still connected, but no internet), I have to start browser (chrome for example) and insert any internet page. Then I am redirected to a landing page. There I have to check a checkbox (accept terms), and then I have to insert username and password. Then the Internet connection ist working again. How can I automatize this? Any ideas?  Any help would be appreciated°!

 

Greetings, Dom