Private IP on simple topology configuration problem

adminator

I'm setting up a rather simple topology wherein the OpenVPN server sits behind a firewall. When I test for connectivity, I receive a "Warning: Your configured Hostname or IP Address is '192.168.0.2' which is not a public IP address that VPN clients on the Internet can reach."

The topology of the network is quite simple as you will see in the following diagram:

I do have the ports forwarded properly through the firewall such that the ports are set in OpenVPN admin to the following and the firewall is forwarding to this 192.168.0.2 box:

TCP Port: 55443
UDP: 55194
Admin Web UI: 55943

Presently the public IP '1.2.3.4' can change as it is not static, so I am planning on using a dynamic DNS service with an address like `subdomain.mydomain.tld`.

What changes should I make to the OpenVPN admin interface to allow proper connections to work properly with OpenVPN? The host system itself has no problem connecting to the Internet, so this is an issue specific to the configuration of OpenVPN.

Traffic

adminator wrotePresently the public IP '1.2.3.4' can change as it is not static, so I am planning on using a dynamic DNS service with an address like `subdomain.mydomain.tld`.

Do that now ..

You know how to Port-Forward at your Firewall ?

adminator

So yes, portforwarding is not a problem and I have it already set up.

I went ahead with the ddns. Do I only need to modify `https://openvpn.domain.tld:PORT/admin/server_network_settings`'s field titled:
"Hostname or IP Address:"

Or are there other fields as well that need to receive this dynamic DNS name for proper resolution and usage?

ste123

As Traffic said, set up your DDNS hostname now.

Once that's done, set that hostname in OpenVPN Access Server (Configuration > Server Network Settings > Hostname or IP Address). If the port forwarding is correctly set up as you say, future client configurations generated by OpenVPN Access Server will contain the DDNS hostname and should therefore work.