How can we use Mobile App outside premises of ON PREMISE SERVER

Since we know that to use the mobile app, for an On Premise Server (Self Hosted Orchestrator), phone needs to be able to connect to the same network Orchestrator is on. If the user is outside the premises, how will he connect the mobile to the on-premises web server?

@Suchita_Singh are talking about web server?

Best Regards
9Apps Apk

Yes Sunil

just use a VPN connection