If the reader wishes to utilize some of the more advanced features of OpnSense ( Suricata, ClamAV, VPN server, etc) the system should be given better hardware. 2 or more PCI-e network interface cards.The suggested minimum specifications are as follows: Hardware Minimums

OpnSense has a minimal set of requirements and a typical older home tower can easily be set up to run as an OpnSense firewall. The distribution is free to install on one’s own equipment or the company Decisio, sells pre-configured firewall appliances. Like PfSense, OpnSense is a FreeBSD-based open-source firewall solution. This article will cover the installation and basic initial configuration of a new OpnSense installation. OpnSense started its life off as a simple fork of PfSense but has evolved into an entirely independent firewall solution. In early 2015 a decision was made to fork PfSense and a new firewall solution called OpnSense was released. In a prior article, a firewall solution known as PfSense was discussed.

Installing opnsense