After installing and setup VMware Photon OS in my lab on VM. While doing remote SSH to the Photon OS, my root user login was failing after providing correct password multiple times. In the last it was showing Too many authentication failures.
As remote SSH root login attempt was failing, I thought root password I was provided is incorrect. but when tried directly it on VM console, it logged-in in the first attempt.
Resolution of this issue is PermitRootLogin need to set to yes by editing file /etc/ssh/sshd_config.
Once sshd_config file is configured, run below command to restart sshd daemon service, to take effect of the changes.
systemctl restart sshd
Test the SSH connection to Photon OS remotely now. As shown in the below screenshot it will be successful.
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