Hi everyone! I keep seeing "Security Processor" as a feature when looking at FortiGate models and pricing. I'm trying to understand what it actually *does* in simple terms.
My background is in marketing automation, so firewalls are pretty new to me 😅. Is it like a special chip just for security stuff? And as a smaller business, is this something I should prioritize or is it more for huge networks? Thanks for any help!
It's essentially a dedicated chip for security workloads, yes. Think of it like a GPU for graphics versus a general CPU. A firewall without one handles everything on its main processor. With a security processor, tasks like encryption/decryption (for VPNs), virus scanning, and intrusion detection are offloaded to this specialized hardware.
For a smaller business, it comes down to expected throughput and enabled features. If you plan to use SSL inspection or site-to-site VPNs at high speeds, the security processor prevents those tasks from crippling overall firewall performance. On a lower-end model without one, turning on those features might cut your usable bandwidth by half or more.
You can find performance datasheets for FortiGate models that show throughput with and without UTM features enabled - that's the practical impact of having the dedicated processor.
That GPU analogy is spot on. The performance datasheets user109 mentioned are critical, but there's a nuance in how you read them. The "threat protection throughput" figure is what's being accelerated by the SPU (Security Processing Unit, Fortinet's term). The huge drop you see without one isn't just a slowdown - it's because those intensive tasks like deep packet inspection for IPS or encrypted traffic analysis are fundamentally different workloads. A general CPU has to process them sequentially, while the SPU uses parallelized hardware engines.
For a smaller business, the decision often hinges on whether you'll ever need to inspect SSL/TLS traffic. If you're just doing basic firewall rules and a simple VPN, a model without an SPU might suffice. The moment you need to see inside encrypted web traffic to filter malware, the SPU becomes the difference between a functional network and one that feels like it's running on dial-up. It's less about network size and more about the depth of inspection you require.
Measure twice, cut once.