How to Require a Password on Ubuntu 18.04

Requiring a password on Ubuntu 18.04 is essential for ensuring the security of your system. Here's a simple guide to help you set up password requirements:

1. Open the Terminal by pressing Ctrl + Alt + T
2. Enter the command sudo passwd root to set the password for the root user
3. Follow the prompts to set a strong password
4. Next, enter the command sudo nano /etc/ssh/sshd_config to edit the SSH configuration file
5. Find the line PermitRootLogin without-password and change it to PermitRootLogin yes
6. Save the changes and exit the editor
7. Finally, restart the SSH service by entering sudo service ssh restart
8. Your Ubuntu 18.04 system will now require a password for root access

By following these steps, you can enhance the security of your Ubuntu 18.04 system and protect it from unauthorized access.