Dear all. I am trying to setup openvpn server and client connection. My openvpn server is running on Ubuntu 18.04 and ip address is 192.168.100.25/30. My client is running on windows 10. OpenVPN server and client successfully connected but can not ping each other. I think this is due to the netmask. Please help me fix this problem. Thank you.
Try this: https://openvpn.net/vpn-server-resources/troubleshooting/ I got OpenVPN working going through the troubleshooting diagrams I found in the docs. If the tunnel is connected but ping does not work, I would guess routing is not set up.