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How To Setup UFW (Uncomplicated Firewall) On Ubuntu 24.04 LTS
In this tutorial, we are going to show you the method to set up UFW or Uncomplicated Firewall on Ubuntu 24.04 LTS. It is an user-friendly application that manages iptables-based firewalls on Ubuntu.
How To Setup UFW On Ubuntu 22.04 LTS
Let’s have a look at the step-by-step method to set up UFW on Ubuntu 24.04 LTS.
UFW is already installed on Ubuntu 24.04 LTS By default. You can run the following command to see whether the UFW is installed or not.
which ufw
If it does not return the path to the command then run the following command to install UFW on Ubuntu 24.04 LTS.
Install UFW On Ubuntu 24.04 LTS
sudo apt install ufw
and run the following command to enable UFW as the firewall is not enabled by default
sudo ufw enable
You can verify that UFW is running by running the following command:
sudo ufw status verbose
Run the following command to turn off or disable the UFW.
sudo ufw disable
Set Up default UFW policies On Ubuntu 24.04 LTS
Run the following command to block all incoming connections and only allow outgoing connections from the Ubuntu 24.04 LTS:
sudo ufw default allow outgoing sudo ufw default deny incoming
Make sure IPv6 support enabled too. by running the following command:
grep IPV6 /etc/default/ufw
Open SSH TCP port 22 using the ufw On Ubuntu 24.04 LTS
Run the following command to allow incoming SSH connections on the default TCP port 22 as follows:
sudo ufw allow ssh
For example you are running the OpenSSH server on TCP port 1222, then run the following command :
sudo ufw allow 1222/tcp
You can limit ssh port access to combat bots:
sudo ufw limit ssh
UFW Allow Command To Allow Incoming Connections.
Run the following command to allow SSH access.
sudo ufw allow 22
Run the following command to deny the connection from port 80:
sudo ufw deny 80
Allow a specific IP Address
Run the following command to allow the specific IP address on Linux. The command below will allow the IP 192.168.1.117 to access all ports on the server:
sudo ufw allow from 192.168.1.117
Disable and Reset UFW on Ubuntu 24.04 LTS
Command to turn off or disable UFW on Ubuntu 24.04 LTS
sudo ufw disable
Deleting a UFW Firewall Rule On Ubuntu 24.04 LTS
If you want to delete UFW firewall rule then run the following command to delete a UFW firewall rule on Ubuntu 24.04 LTS.
sudo ufw delete allow ssh
