Just note…how to add a user with root permission and a basic install firewall on Ubuntu 20.04
Upon completing the Ubuntu installation, it is essential to remember the following steps that I often forget. This note serves as a personal reminder.
Current user: root — Initially, you’re logged in as the root user.
Create a new user
a new user has been successfully added.
Setup basic firewall
Special thanks to the comprehensive guide available at DigitalOcean, which served as a reference for these steps. You can find detailed instructions in their article on initial server setup with Ubuntu 20.04 at the following link: DigitalOcean Tutorial.