I am using ubuntu system here. I tried to ssh from ubuntu to any centos, i am having this message. Please assist.
root@ubuntu:~/.ssh# ssh -l user10.10.10.12
The authenticity of host '10.10.10.12 (10.10.10.12)' can't be established.
RSA key fingerprint is b2:27:e9:6d:7c:ef:a9:5b:a4:28:3d:bd:d8:5c:ff:93.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.10.10.12' (RSA) to the list of known hosts.
Permission denied (publickey,gssapi-with-mic,password).