SecureGuard adds one validated configuration for your whole policy, a preview before each change, and one-step undo, with a free Community tier.
Teams that like pf-based firewalls and want a commercial product with one validated config, change preview and one-step rollback.
| Topic | OPNsense | SecureGuard |
|---|---|---|
| License model | Open source; the OPNsense edition is free. | Closed-source commercial product. |
| Price | Free open-source edition. Business Edition from €149 per year (shop.opnsense.com, checked Oct 6, 2026). | Community $0 · Home $149/yr · Business $589/yr · Enterprise $1,495/yr per appliance |
| Hardware | Your own hardware or VM, or Deciso appliances from €598.00 (DEC677), each with 1 year of Business Edition (shop.opnsense.com, checked Oct 6, 2026). | Your own hardware or VM; we don't sell appliances. |
| Preview / rollback | Configuration history with diff and revert. | A preview before each change, and one-step undo (all tiers, including Community). |
| HA | CARP failover with config and state sync, included in the free edition. | Active/passive HA on Business ($589/yr) and Enterprise. |
Stay on OPNsense if you want a free, open-source firewall you can inspect and change, you use its plugins, or you already run it on your own hardware or a Deciso appliance and are happy managing it. OPNsense includes high availability in its free edition; SecureGuard is closed source, does not offer a plugin ecosystem, and puts HA on its Business tier ($589/yr).
SecureGuard is built on the same FreeBSD and pf foundations. It is a commercial, closed-source firewall that keeps your whole policy in one validated configuration, with a preview before each change and one-step undo.
Only if you turn it on. By default, AI suggests changes and a person approves each one. On Business and Enterprise you can turn on automatic blocks, which act only when two signals agree, are rate-limited, and expire on their own.
No. It is a next-generation firewall / UTM appliance. Endpoint agents and SOC-as-a-service are a different product.
Read what is actually built, the FAQ, the Sophos UTM replacement, the FortiGate alternative, and how the AI layer is allowed to act.