SSH: Permission denied (publickey,gssapi-with-mic,password)

Environment:

• Oracle Linux 6.x, /7.x
• RedHat Linux  6.x, /7.x

Symptoms:

• SSH service is running
• Firewall is disabled
• SELINUX is disabled or permissive mode
• ssh client gives error

ekucuk@ekucuk-DESKTOP:~$ ssh oracle@10.0.0.224 -p 10112
oracle@10.0.0.224: Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

Edit /etc/ssh/sshd_config and uncomment "PasswordAuthentication yes". Then restart sshd service

ekucuk@ekucuk-DESKTOP:~$ ssh oracle@10.0.0.224 -p 10112
oracle@10.0.0.224's password: