Raspberry Pi

A guide to improve the security of Raspberry Pi

The security of the Raspberry Pi device is compromised when it is connected with the internet and this small sized device offers various advantages yet it doesn’t lower the security risk. Improving your Raspberry Pi device security is a vital step and you probably want to make it happen but you don’t have enough understanding to do so. If this is the case, then you are probably looking for some assistance in order to make your Raspberry Pi device secure. There, if you need help to improve the security of Raspberry Pi, you will discover in this article, which ensures that you will learn the ways to make your device secure.

Guide to improve the security of Raspberry Pi

If you are looking for the right guidance to improve the security of Raspberry Pi then you should follow the methods provided below and they will help you in this case.

1 : Changing your device password

A password with different types of characters included is believed to be the strongest one and it won’t be easily breakable by the hacker. As a Raspberry Pi device arrives with the default password and you have probably selected the default password for your device then you should change it as soon as possible so that no one can access your device without your permission.

In order to change your password, you will need to open your Raspberry Pi terminal and there add the below mentioned command.

$ passwd

After executing the above command, you will be prompted to update your Raspberry Pi’s password, and you will see the option “Current password:”. In that choice, enter your existing Raspberry Pi password, and as soon as you do, you will see the option “New password,” as seen below.

Now, you will have to enter the new password in front of the “New password” option and then press Enter to change it successfully and you will also need to retype your password in the following choice. After you finish the step, you will get the confirmation that your password was updated successfully as shown in the image below.

2 : Updating and Upgrading your packages on Raspberry Pi device

Keeping your Raspberry Pi updated and upgraded are one of the do able and vital actions to do as they will enable you to keep a check on your package’s updates. Not only with that, you may be able to update your security fixes which can definitely benefit you in keeping your device secure. In order to do so, use the command as described below and write it into your Raspberry Pi terminal to update your device with the latest packages.

$ sudo apt update

After the update, run the upgrade command as shown below to upgrade the packages.

$ sudo apt upgrade

Now, to install the latest security updates, you will need to write the command in the terminal which is shown below.

$ sudo apt install unattended-upgrades

When you add “Y” and press enter, it will begin installing the security updates on your Raspberry Pi device.

3 : Setup Firewall on Raspberry Pi

A Firewall is a protected wall which stops the incoming connections from accessing your device. If you are trying to strengthen your Raspberry Pi device security, you should consider setting up a firewall on your Raspberry Pi device. In Raspberry Pi, you will need to install Uncomplicated Firewall (UFW) through the below provided command.

$ sudo apt install ufw

Afterwards, you will be required to limit the connections on the firewall on port 22 which is used for remote login. The command to enter in the terminal is given below.

$ sudo ufw limit 22/tcp

After updating the rules on firewall, you will then be required to enable it using the below mentioned command.

$ sudo ufw enable

4 : Install Fail2ban on your Raspberry Pi device

Fail2ban is an innovative tool which is designed solely to safeguard the user’s privacy as it blocks the attacker if he attempts to access your system by performing multiple tries. It is up to you to determine the number of tries and also you may select the time period of a ban. In order to install it on your Raspberry Pi, you will need to execute the below given command in the terminal and after you press enter it will be installed on your device.

$ sudo apt install fail2ban

The default setting of Fail2ban is a 10 minutes ban for someone who tries to login 5 times in a system and if you want to change these settings, you can set it by configuring the “/etc/fail2ban/jail.conf” file.


If you are using Raspberry Pi on its default settings then your device is at a security risk. To increase the security of your Raspberry Pi device, you should start with updating your Raspberry Pi password and then go on to upgrade your security packages. In order to further increase your security, you are also recommended to install firewall and Fail2ban applications on your Raspberry Pi device which provide a further security protection to your Raspberry Pi.

About the author

Awais Khan

I'm an Engineer and an academic researcher by profession. My interest for Raspberry Pi, embedded systems and blogging has brought me here to share my knowledge with others.