Sounds like a host on your local network. The 192.168.x.x IP range is usually used for small private networks - most consumer routers are configured to use this range for the local network.

Two servers cannot have the same IP address. When you are using VPN you are going over the Internet which means the IP address you try to connect to will have to be a valid, (not 10.x.x.x or 192.168.x ...