How to Create Sudo User and Disable Root Access

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Create Sudo User

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Create a new user by running the adduser command.

sudo adduser username

Replace "username" with the desired username. You’ll be prompted to set a password and provide some basic information.

After creating the user, you need to add them to the sudo group to allow them to execute commands with root privileges.

sudo usermod -aG sudo username

Switch to the newly created user and test if they have sudo access by running following command.

su - username
sudo ls /root

You’ll be prompted for the user’s password. If they can successfully run the command with sudo, the setup is complete.

Disable Root Access

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Open the /etc/ssh/sshd_config SSH Configuration File,

nano /etc/ssh/sshd_config

To disable root access and password authentication, Open the SSH configuration file,

nano /etc/ssh/sshd_config

Look for the line containing PasswordAuthentication. If it’s commented out (with a #), uncomment it by removing the # and Set the value to no like this.

PasswordAuthentication no

To disable root login, find the line PermitRootLogin and set it to no:

PermitRootLogin no

Then save the file and exi. Next Restart the SSH service,

systemctl restart sshd