OPNsense — Guide: Tutorials & Practical Articles

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Everything you need to master OPNsense, from picking the right hardware to running a redundant cluster.

CPU, NIC and SSD choices that keep your firewall fast on gigabit and multi-gigabit internet links.

Features, release cadence, security posture and community side by side — pick the firewall that fits.

Carve a flat ISP link into trustworthy zones with VLAN interfaces, firewall rules and DHCP per segment.

Configure site-to-site and remote-access WireGuard tunnels in the OPNsense web interface.

Pair two firewalls, configure CARP and keep traffic flowing when one appliance needs maintenance.