This is an old revision of the document!
Documentation
How To Install OPNSense (Make a Firewall)
Step 1. Go to: https://opnsense.org/download/ download the correct image for your system and flash it with Balena-Etcher (or Rufus)
Step 2. Make sure all hardware (Especially motherboards) are up to date, run any firmware updates needed
Step 3. Boot from the Usb boot device. follow the on screen prompt to install OPNsense to your SSD or HDD. Select the drive that will be imaged and will boot OPNSense.
Step 4. Next it will prompt you to setup you WAN and LAN Interfaces which you will want to have connected at this time. Setup your WAN as your connection from modem. COnfigure IP to be configured with DHCP.
Step 5. For Lan interface, setup the connection that runs from your filewall to a switch
Step 6. Change Root Password to something complex