SoftEther VPN User Forum

Hello:

First of all, I've not found a similar problem in the forum, but if someone find something similar, please make me know.
Second, excuse my poor english.
Third, the problem is that I've this error messaje in the Dynamic DNS Function windows of one of my VPN servers (see attached file). The full text says:
"Unable to trust the certificate provided by the destination server. The setting to always verify the server certificate is enabled in the VPN Connection Settings. Either register a root certificate that can be trusted or register a individual certificate."

The xxxxxxxxxx.vpnazure.net works well (slow), but the xxxxxxxxx.softether.net do not work at all.
Public iP from WAN side is OK.

Any clue....

Thanks a lot.

Hello,

It's possible that your network's gateway is acting as a MiTM SSL proxy.

Are you the owner of the network?

Best regards,
Davide

Hi,
I don't know for sure, but I don't think so.
I'll check that in the firewall.

Thanks.

Hello:
Nothing leads to a problem with an SSL Proxy that don't seem to exist.

The message says that there are untrusted certificates that dont allow to register the VPN server in Dynamic DNS service...

Any help?

Hello everyone:

More info for diagnostics...

Usin the public WAN ip WORKS!

Also using a no-ip.com domain (that points to public WAN ip).

But Dynamic DNS service from softether do not.

Thanks

Nothing leads to a problem with an SSL Proxy that don't seem to exist.

The DDNS service registry work on HTTPS.
So, if there is MITM, DNS registry fails.