Not able to run test case in Katalon while connected to VPN(No Internet)

Team,

I have set of test case for web application developed using Katalon studio

Scenario-1
Without VPN connection, i dont have any issues , All the test cases executed succesfully.

Scenario-2
With VPN connection which doesn’t have internet connection,I am not able to execute test case ?..

To execute my test case via Katalon with VPN … Internet is mandatory ?..

How internal application(don’t internet connection) will be automated and tested using Katalon studio ?
Please provide inputs help me on this issue ?

@jovialjegan A browser needs a URL. Can you “ping” the URL from your location? If you cannot, neither will KS.