I have two ubuntu servers I login to using ssh.
I connect from my laptop to the first server and from that to the second. I use an ssh key to login to both and everything was working as expected.
Yesterday, all of a sudden, the connection from the laptop to the first server stopped working (I rolled back to password auth) but I cannot see why. I tried to refresh the key but nothing changed. The connection from server to server works fine
SSH version on both files is the same
OpenSSH_9.6p1 Ubuntu-3ubuntu13.5, OpenSSL 3.0.13 30 Jan 2024
OpenSSH_9.6p1 Ubuntu-3ubuntu13.5, OpenSSL 3.0.13 30 Jan 2024
Where can I look at?