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Hardware Requirements

At the minimum, your host machine for OPNsense should have the following:

  • 1GHz Dual Core CPU
  • 2 GB RAM
  • 1.5 GHz CPU
  • 8 GB RAM
  • 120 GB SSD
  • Intel i5-7600 @3.50 GHz 
  • 8 GB DDR4 RAM
  • 512 GB SSD 

Additionally, your host machine needs at least 2 RJ45 ports, 1 for your WAN connection and 1 for your LAN connection. My OptiPlex only had 1 RJ45 port, so I purchased an Intel I350-T4 NIC and installed it onto the motherboard, which gave me 4 RJ45 gigabit ports. More information about that can be found here.