Firewall Software Raspberry Pi. However if you wish to expose your Raspberry Pi directly to the internet either with a direct connection unlikely or by letting certain protocols through your router firewall eg. For example if you are simply using your Raspberry Pi on your home network behind a router with a firewall then it is already quite secure by default.
Ill show you how to firewall your Raspberry Pi with ufw. You can save your device by using a good-quality Raspberry Pi antivirus software. It began as a fork of the IPCop project but has since been rewritten based on Linux From Scratch.
IPFire is a Linux-based stateful firewall distro thats built on top of Netfilter.
The second is much more easy to use and configure and thats debians ufw service. The Raspberry Pi only have one Ethernet socket so its not possible to create a firewall with two RJ45 interfaces. Raspberry Pi Imager is the quick and easy way to install Raspberry Pi OS and other operating systems to a microSD card ready to use with your Raspberry Pi. Before you set up any firewall rules plug a desktoplaptop into your RPi eth0 port and confirm it gets an IP address and has DNS running.