Guidance on VPN Connection After Internet Change

Jalil

Dear OpenVPN Support Team,

Assalamu Alaikum,

I am the IT manager for HRA Account and currently using OpenVPN on our server in Ireland. Our VPN setup allows our clients to access the server via RDP.

We are planning to change our internet connection. I would like to confirm whether this change will affect our existing OpenVPN setup. Specifically, I would like to know:

Will the VPN continue to work without changing any settings if the public IP changes?

If changes are required, what steps should I take to ensure uninterrupted client connectivity?

For your reference, here is our current configuration:

Server Public IP: 95.83.221.87

OpenVPN Version: [your OpenVPN version]

Server Config: Using UDP port 1194, certificates generated via EasyRSA, TUN device, AES-256-GCM encryption, and TLS authentication (ta.key).

Client Config: Connects to remote 95.83.221.87 1194 using proper client certificates.

Your guidance on whether we need to update the VPN configuration after the internet change, or if using Dynamic DNS is recommended, will be highly appreciated.

Thank you for your support.

Best regards,

JosephS

If the remote option in the .ovpn configuration file is defined as a IPv4 address then you most probably would need to update your configurations and send out new updated profiles/configurations to every user once the server's public IP changes.

If both the sever config and the client config remote option is defined as a A DNS record and works dynamically then you should be fine after switching over to your new ISP, you won't need to generate new client config files for your users.

P.S. Please note that this forum is a dedicated space for the OpenVPN community to engage in disscussions and isn't a designated channel to get in touch with the OpenVPN Inc. support team.

Ericmann

I’ve dealt with this before. If your public IP changes, clients using the hardcoded IP won’t connect until you update it in their config. Easiest fix is setting up Dynamic DNS so you don’t have to keep editing configs every time.

Also, make sure port forwarding/firewall rules are updated on the new connection. In my case, that was the part that actually broke things, not OpenVPN itself.