OPNsense is an open source firewall and routing platform that is based on FreeBSD. In this tutorial, we will show you how to install OPNsense on Ubuntu Server.
Before we start, we need to update and upgrade the Ubuntu server. To do that, open the terminal and execute the following commands:
sudo apt-get update
sudo apt-get upgrade
Next, we need to download the OPNsense image. Go to the official OPNsense website and download the latest version of OPNsense for your architecture. In this tutorial, we will use the amd64 architecture.
wget https://opnsense.c0urier.net/releases/19.7.7/OPNsense-19.7.7-OpenSSL-dvd-amd64.iso.bz2
Once you have the OPNsense image downloaded, you need to extract it. Use the following command to extract the OPNsense image:
sudo apt-get install bzip2
bzip2 -d OPNsense-19.7.7-OpenSSL-dvd-amd64.iso.bz2
Now, we need to create a bootable USB drive using the extracted OPNsense image. You can use the dd command to create a bootable USB drive.
First, insert the USB drive into your Ubuntu server. Then, run the following command to list all the connected devices:
sudo fdisk -l
Note down the path of the USB drive. In this tutorial, we will assume that the path is /dev/sdb.
Now, run the following command to create a bootable USB drive using the OPNsense image:
sudo dd if=OPNsense-19.7.7-OpenSSL-dvd-amd64.iso of=/dev/sdb bs=4M status=progress
Wait for the process to complete. Once it is done, eject the USB drive.
With the bootable USB drive ready, we can now boot from it. Plug in the USB drive to the server and restart the server.
On the BIOS screen, select the USB drive as the boot device. You may have to press a specific key to enter the boot menu. This varies depending on your server model.
Once the server boots from the USB drive, you will be presented with the OPNsense installer. Follow the on-screen instructions to install OPNsense on your Ubuntu server.
That's it! You have successfully installed OPNsense on your Ubuntu server. OPNsense is a powerful and flexible firewall and routing platform that can provide excellent security for your network.
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