How to Set Up a Firewall with UFW on Debian 13

To set up a firewall with UFW on Debian 13, follow the steps below:

Step 1 : Update the package list to ensure you install the latest packages:

sudo apt update -y

Step 2 : Install the Uncomplicated Firewall (UFW):

sudo apt install ufw -y

Step 3 : Check the current status of UFW:

sudo ufw status

Step 4 : Allow SSH connections to avoid being locked out:

sudo ufw allow ssh

Step 5 : Allow other services such as HTTP and HTTPS if needed:

sudo ufw allow http
sudo ufw allow https

Step 6 : Enable the firewall:

sudo ufw enable

Step 7 : Verify that UFW is active and the rules are applied:

sudo ufw status

Congratulations, you have successfully set up and enabled a firewall with UFW on Debian 13.