We always recommend our readers, update the repository of Raspberry Pi before installing any package so if there is any package that needs an upgrade, it can be upgraded. In this write-up, we will discuss the method to install and set up the ufw firewall on Raspberry Pi.

The UFW can be handled from the terminal of the Raspberry Pi (as Raspberry Pi is also a Debian-based operating system). The UFW is a firewall that comes on Ubuntu and Debian-based distributions by default to control and monitor the network traffic. The firewall is a security system for the network which monitors the network traffic both incoming as well as outgoing and controls the traffic by allowing and restricting them on the basis of pre-defined rules. Ip addr output: 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft foreverĢ: eth0: mtu 1500 qdisc mq state UP group default qlen 1000 link/ether dc:a6:32:6a:82:e4 brd ff:ff:ff:ff:ff:ff inet 192.168.1.35/24 brd 192.168.1.The UFW is also known as the uncomplicated firewall, which is simply a program of firewall, but for the readers who don’t know much about the firewall here is the explanation. Is there any other option that you guys probably have to access RPi4(Basically IOT devices) through Internet? Any suggestion would be greatly appreciated. When you operate the Raspberry Pi website or other applications it is always good to have an overview of the communication network and seeded firewall. Another issue is that I need to install it on all the devices through which I am going to access the CloudServer and ofcourse on the RPi4 itself. I tried Zerotier, which creates a VPN and I can access the CloudServer through the static IP assigned under VPN but the transfer speeds are really slow. It is much user friendly than manually editing configuring IPTABLES.

Also I tried to port forward on my router's admin panel, but couldn't find the required setting. UFW is a free firewall that you can use to control the IPTABLES on Linux operating systems. My ISP does not allow static IP and used CGNAT.

I want to access it using a public domain name or in other words through open Internet.

I am able to access the server using my Internal IP. For the current project I am running a NextCloudPi server on it. I have been developing projects with Raspberry Pi 4.

Raspberry pi firewall