Hello,
I have a Glinet X750 and exactly the same problem : Configured as a OpenVPN Server, the GLINET X750 worked fine with Ubuntu Nautilus vpn standard client. But now, with Ubuntu 22.04.3 LTS, I’m unable to avoid the error : OpenSSL: error:0A00018E:SSL routines::ca md too weak. Installation of the current firmware 3.104-3.217 (Compile Time 2023-05-08 10:37:25) did not solve the problem. I’m also surprised that so few people are bothered by this blocking problem.
Any help would be appreciated…