If you just upgraded Ubuntu 15.04/10 to Ubuntu 16.04 LTS (or otherwise upgraded OpenSSH from v6.9 to v7.0 you may be getting the ssh refusal because of changes in OpenSSH.
I was specifically getting this error in the /var/log/auth.log (via Webmin): sshd: userauth_pubkey: key type ssh-dss not in PubkeyAcceptedKeyTypes [preauth].
For this specific error, you need to add “PubkeyAcceptedKeyTypes=+ssh-dss” (without the quotations) to the bottom of your /etc/ssh/sshd_config file.
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.
Click below to sign up and get $100 of credit to try our products over 60 days!