OpenVPN Connection scenarios to Establish with 'TLS scenarios: TLS key negotiation scenarios' on Alpine Linux
After trying multiple solutions online, I still can't figure this out. I'm migrating some code and I've tried everything I can think of but I tried several approaches but none seem to work... I'm running an OpenVPN client on Alpine Linux 3.17, and I'm working with a persistent scenario where the connection fails to establish. Specifically, I receive the following behavior message in the logs: ``` TLS behavior: TLS key negotiation failed to occur within 60 seconds (check your network connectivity) TLS behavior: TLS handshake failed ``` I've verified my configuration file (`client.ovpn`) and it looks correct. Here’s a snippet of the relevant parts of my configuration: ```plaintext client dev tun proto udp remote myvpnserver.com 1194 resolv-retry infinite nobind continue-key continue-tun remote-cert-tls server cipher AES-256-CBC auth SHA256 key-direction 1 <ca> -----BEGIN CERTIFICATE----- ... (certificate contents) ... -----END CERTIFICATE----- </ca> <cert> -----BEGIN CERTIFICATE----- ... (client certificate contents) ... -----END CERTIFICATE----- </cert> <key> -----BEGIN PRIVATE KEY----- ... (private key contents) ... -----END PRIVATE KEY----- </key> ``` I’ve tried running the OpenVPN client with `--verb 5` for more verbose logging, and I see that it attempts to send the initial packets but never receives a response. The server configuration is also set to accept connections from my client’s IP. I’ve double-checked the firewall settings on both client and server sides, ensuring that UDP port 1194 is allowed. To troubleshoot further, I used `tcpdump` to monitor traffic, and I see packets being sent from my client to the server, but there are no packets returning from the server. I also tried testing from a different network (just in case my ISP was blocking VPN traffic), but the scenario continues. Is there anything else I can check? I suspect it might be related to the UDP protocol or some misconfiguration on the server side, but I'm not entirely sure how to confirm that. Any guidance would be appreciated! I'm working on a CLI tool that needs to handle this. I'd really appreciate any guidance on this. This is part of a larger REST API I'm building. Any feedback is welcome! Any advice would be much appreciated. Thanks, I really appreciate it!