Accessing local SharePoint Site with VPN connected

Hi all,

We are trying to connect our local Oracle Virtual Machine (VM) SharePoint Sites with Client Database (DB) using VPN.

In our local VM, our SharePoint sites are working fine with data being fetched from local DB (Normal working scenario).

But when we are trying to connect to VPN in VM, the SharePoint web application app pool stops and we get error “503: Service Unavailable”.

We have also tried making changes in HOSTS file with new assigned DNS IP and also tried browsing our SharePoint sites with IP but with no success.

Has anyone faced such issue in their project where the VM local SharePoint sites should work with client VPN? Or if someone can suggest some generic settings which we can try on our VM to get it working.

Br,