I am attempting to setup a VPN connection between a cloud server on DigitalOcean and an on-premise server using Tinc. Thus far, I have been successful in getting the connection up and running and the servers can talk to each other via the VPN address - according to this tutorial.
I am unable to, however, ping any devices on my local LAN (172.23.6.0/24) from the server on DigitalOcean. I've tried specifying my local subnet as the subnet for the tinc hosts file, but it doesn't work. When I attempt to ping from the cloud server, I simply get a "Destination host unreachable" error.
This is my first time working with Tinc so the learning curve is quite steep. I'm still reading through the documentation but finding it a bit confusing at the moment. Not that it's not well written, I'm just not getting it for some reason.
Anybody out then been successful with what I'm trying to do that can lend me a hand please? Thanks.
PS. My ultimate goal with this is to get the cloud server and the in-house server communicating with each other, so that the cloud server is aware of the LAN subnet behind our firewall. This way I'll be able to do some Active Directory authentication without exposing the AD Server to the internet (at least not directly).