3

I'm trying to connect my NextCloud account to Ubuntu, so that I can take advantage of the calendar integration and other features. Right now I'm running my own NextCloud server with a self-signed certificate, as I'm trying to avoid relying on any outside authority.

I can access the server from my browser without issues, and I don't mind having to go through the 'untrusted' certificate exception dialog since I'm the one who signed it.

But when I try to connect my NextCloud account to Ubuntu using the "Online Accounts" feature in system Settings, the connection fails with an error message due to "Invalid Certificate."

Is there a way to force Ubuntu to accept my NextCloud server and credentials, even if the certificate is invalid? Is there a way to add the certificate so that Ubuntu will accept it and connect to my server?

Sudo Sensei
  • 33

2 Answers2

3

Firefox uses its own certificate store, so it does not affect Online Accounts. But if you add your self-signed certificate to the root trust store of the system, then it should work. This Ask Ubuntu question deals exactly with this: How do I install a root certificate?

meskobalazs
  • 3,103
1

Right now I'm running my own NextCloud server with a self-signed certificate, as I'm trying to avoid relying on any outside authority.

Don't. Suddenly you want to share a file with someone else, who doesn't have your certificate.

The web is moving in the direction of TLS within the current PKI infrastructure. Set up Let's Encrypt, and optionally Public Key Pinning to ensure that no thirdparty can issue a new certificate with a new public key without your knowledge, to avoid a MiTM.

vidarlo
  • 23,497