We list the best ... A firewall provides an essential first defense against unauthorized intrusion, and can also to help lock down malware before it can get started on infecting your IT network.

Understanding what firewalls do (and don't do) takes just a few minutes. Learn what a firewall does to keep intruders out in < 5 minutes.

As a lightweight distro, OPNsense has fairly modest hardware requirements. So long as your router, mini-PC, or SBC is powered ...