I have recently used the Let’s Encrypt service to receive my own free SSL/TLS certificate and it’s working great! I have already deployed it for the home web, ftp and mail server I run and I am very satisfied about it.
However, I started wondering whether it would be possible to use the certificate for my ssh server as well. Currently, I’m using keys I created using ssh keygen, but those do not provide validation and hence trigger a warning when one connects the first time. I tried searching but I found info about this rather confusing?
- Is it possible to use the Let’s Encrypt certificate for an SSH server?
- If so, how should I configure SSH for this to work?
The operating system is Debian btw.