Is there a Cisco VPN client to have Surface Hub connected to the network? Or any other suggestions to have full access to surface hub outside of network? Me enabling outside Skype access doesn't provide any good than using Only skype features?
For the Surface Hub to function externally with your on-premises Skype for Business deployment you'll need to have both the SfB Edge Server deployed as well as a reverse proxy configured that is publishing both the SfB Front End Pool and your Exchange Server. Surface Hub uses ActiveSync for Exchange calendar connectivity so make sure that is published correctly.