The term anonymous root login is used to indicate that the root user is allowed to login directly. When anonymous root login is restricted, to gain root privileges you must first log in as another user (nasadmin, for example) and then
su to root. Restricting anonymous root login on the serial console and SSH enhances system security.
Steps
Log in to the CLI with your username and password.
You must have root privileges to access the /etc/securetty and the /etc/ssh/sshd_config files.
Edit the /etc/securetty file using vi or another text editor.
Remove the
ttyS1 entry to restrict anonymous root login on the serial console.
Edit the /etc/ssh/sshd_config file using vi or another text editor.
Un-comment the PermitRootLogin parameter and set the value to
no to restrict anonymous root login using SSH.
Restart the SSH daemon to re-read the configuration file.
For example,
run: /etc/init.d/sshd restart.
Next steps
Anonymous root access using SSH is required to complete a VNX OE for file upgrade. Set the value of the PermitRootLogin parameter back to yes and restart the SSH daemon before starting an upgrade.
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