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Experiencing VPN connection issues with OpenVPN 2.6.x and LANCOM firewall? It's frustrating when updates disrupt functionality. Ensure both OpenVPN and the firewall are running the latest versions, and consider reaching out to both OpenVPN and LANCOM support for assistance. Collaborative troubleshooting and potential patches can help resolve the connectivity problem.brickmaker wrote: ↑Mon Nov 13, 2023 9:41 amUnfortunately, we have the problem that we cannot connect to our VPN with the current OpenVPN client (V 2.6.x) cannot connect to our VPN. We use a firewall from LANCOM. Up to OpenVPN 2.5.9 the connection works perfectly. Unfortunately, it no longer works from V2.6 onwards.
Our Lancom firewall is up-to-date and has version 10.12.6464RU3.
Unfortunately, it is still not possible to connect. The last known working version of OpenVPN is 2.5.9.
Here is a screenshot of the status window when I try to connect. Does anyone have any ideas?
This is our Client config:
Client Config
client
dev tun
proto udp
persist-tun
remote [ip] [port]
nobind
cipher AES-256-GCM
tls-exit
<cert>
xxx
</cert>
<key>
xxx
</key>
<ca>
xxx
</ca>
Okay... then that should solve my problem. I'll install the update tonight. Then we'll see what happens.* Due to a change in the encryption algorithms of the OpenVPN client as of version 2.6.0, it was not possible to establish VPN connections to the Unified Firewall. The OpenVPN client from version 2.6.0 can now be used.
