@Hitesh_Dubey
does your NethServer installation have a RED and a GREEN network card/zone?
Also: are you trying to test the connection from inside your GREEN network?
A Nethserver can be an OpenVPN Server without having two “real” interfaces.
But this needs a route set on the router / gateway for the VPN network (usually something with 10.x.x.x) pointing back to the LAN Interface of NethServer…
This is exactly what I had to do using a static route on my router for the IP range of the the OpenVPN network for my equipment to communicate. NS was able to pass all of the traffic along that I needed but my end devices on my home LAN didn’t know where to send the traffic back to (NS is not my gateway/routing device but a standalone 1 interface VM) until the static route was created.
I believe this is saying your public IP is the same before and after you have connected to your VPN. Some VPN providers will route ALL of your traffic through the VPN device (NS in this case) and that the public IP address should change to that of the VPN device (that of NS again in this case). There is an option you can select to route all traffic through the NS VPN if desired. My venacular is horrible but the term i think describes this is called split tunneling.
