How do I disable user login?

How do I disable user login?

UNIX / Linux : How to lock or disable an user account

1. Lock the password. To lock a users account use the command usermod -L or passwd -l.
2. Expire the user account. The commands passwd -l and usermod -L are ineffcient when it comes to disable/lock user accounts.
3. Changing the shell.

Should you disable SSH root login?

One of the biggest security holes you could open on your server is to allow directly logging in as root through ssh, because any cracker can attempt to brute force your root password and potentially get access to your system if they can figure out your password.

How do I permit root login?

Enable root login over SSH:

1. As root, edit the sshd_config file in /etc/ssh/sshd_config : nano /etc/ssh/sshd_config.
2. Add a line in the Authentication section of the file that says PermitRootLogin yes .
3. Save the updated /etc/ssh/sshd_config file.
4. Restart the SSH server: service sshd restart.

How to disable or enable root login in Linux?

The root user has access to anything and everything that is available within the Linux system. We can disable root login in Linux, though the security benefits of the same are debatable. There are multiple ways to disable root and we’ll go over all the methods in this tutorial. 1. Disable Root Login in Linux with passwd Command 2.

How to disable or restrict direct root login via console?

Using this you disabled ssh based direct root login but what if someone gets access to the GUI console, which can be iLO for a physical blade and a GUI console for VMware via vnc or some other tool? I hope the article was useful. How does a DNS query works when you type a URL on your browser?

How to disable root account in Linux-tecmint?

1. Change root User’s Shell The simplest method to disable root user login is to change its shell from /bin/bash or /bin/bash (or any other shell that permits user login) to /sbin/nologin, in the /etc/passwd file, which you can open for editing using any of your favorite command line editors as shown. Save the file and close it.

Is there a way to block root user login?

The commonest way of accessing remote servers or VPSs is via SSH and to block root user login under it, you need to edit the /etc/ssh/sshd_config file. Then uncomment (if it is commented) the directive PermitRootLogin and set its value to no as shown in the screenshot. Once you are done, save and close the file.