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How to Install Webmin on Ubuntu Server

How to Install Webmin on Ubuntu Server

Webmin is a web-based system administration tool for Unix/Linux servers. It provides a graphical interface to manage your server through any web browser. This guide shows you how to install Webmin on Ubuntu 20.04+ and 22.04+.

Prerequisites

  • Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS
  • Root or sudo access
  • Internet connection
  • At least 500MB free disk space
Note: Webmin runs on port 10000 by default and uses HTTPS. You’ll need to allow this port in your firewall.

Method 1: Install Using the Official Repository (Recommended)

Step 1: Update System

sudo apt update
sudo apt upgrade -y

Step 2: Install Required Dependencies

sudo apt install -y apt-transport-https ca-certificates software-properties-common wget

Step 3: Add Webmin Repository

Add the Webmin GPG key and repository:

wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo tee /etc/apt/trusted.gpg.d/webmin.asc
sudo sh -c 'echo "deb [trusted=yes] https://download.webmin.com/repository sarge contrib" > /etc/apt/sources.list.d/webmin.list'

Step 4: Install Webmin

sudo apt update
sudo apt install -y webmin
Success! Webmin is now installed!

Method 2: Install Using DEB Package

Download and install the DEB package directly:

wget https://sourceforge.net/projects/webadmin/files/webmin/2.202/webmin_2.202_all.deb
sudo dpkg -i webmin_2.202_all.deb

If there are missing dependencies, fix them:

sudo apt install -f

Accessing Webmin

Open in Browser

Navigate to your server’s IP address:

https://192.168.1.100:10000

Or using hostname:

https://your-server-name:10000
Note: Accept the SSL certificate warning in your browser (self-signed certificate).

Login Credentials

Login with your system username and password:

  • Username: Your sudo user
  • Password: Your user password

Configure Firewall

If using UFW (Uncomplicated Firewall):

sudo ufw allow 10000/tcp
sudo ufw reload

Check UFW status:

sudo ufw status

Managing Webmin Service

Start Webmin

sudo /etc/webmin/start

Stop Webmin

sudo /etc/webmin/stop

Restart Webmin

sudo /etc/webmin/restart

Check Status

sudo systemctl status webmin

Using Systemd

  • Start: sudo systemctl start webmin
  • Stop: sudo systemctl stop webmin
  • Restart: sudo systemctl restart webmin
  • Enable on boot: sudo systemctl enable webmin
  • Disable: sudo systemctl disable webmin

Updating Webmin

To update to the latest version:

sudo apt update
sudo apt upgrade -y webmin

Uninstalling Webmin

sudo /etc/webmin/stop
sudo systemctl stop webmin
sudo apt remove --purge -y webmin
sudo rm -rf /etc/webmin
sudo rm -rf /usr/share/webmin

Useful Webmin Features

  • System information and statistics
  • User and group management
  • Disk quotas management
  • Apache configuration
  • MySQL/MariaDB databases
  • BIND DNS server configuration
  • Package management
  • File manager
  • Backup and restore
  • Network firewall configuration
  • Log file viewer

Troubleshooting

Can’t Access Webmin

  • Check if Webmin is running: sudo systemctl status webmin
  • Check firewall: sudo ufw status
  • Check port 10000: sudo lsof -i :10000

SSL Certificate Warning

This is normal for self-signed certificates. Accept the warning or add a trusted SSL certificate.

Login Failed

Use your system username and password, not root. Webmin doesn’t use the root user by default.

Conclusion

You now have Webmin installed on your Ubuntu server! You can manage your server through a user-friendly web interface at:

https://your-server-ip:10000
Tip: Consider setting up a reverse proxy with Apache or Nginx to access Webmin via a domain without the port number.