Im trying to connect to my ubuntu server via ssh from Windows. Unlike my another ubuntu server from same dedicated server hosting, the server host key changing frequently.
I get WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! and fingerprint SHA256:...6MyI.
with this key and fingerprint whenever i enter my password the ssh give me error: Permission denied, please try again. and Permission denied (publickey,password).
i remove the ed25519 key from .ssh/known_hosts every time this key store to monitor the key changes. after few minuets of try, this key and fingerprint changes and when i enter same password i can connect to server. but after few minuets(not same every time) i disconnect from server by connection reset by peer. and when i want to connect again the key is changed back to wrong one and showing fingerprint SHA256:...6MyI.
i tried reboot, i asked hosting provider to reset the server (i'm not sure what they done because the root password didn't change) but nothing changed.
and also i tried rm -v /etc/ssh/ssh_host_* -> dpkg-reconfigure openssh-server -> systemctl restart ssh and ssh-keygen -A to reset host key from server but this only change the working key that let me connect by password, not affect on wrong key.
is this done by any script or automation? how can i stop this?
