Having recently completed a vendor bake-off for a new edge deployment, I'm left with a distinct impression: the "next-gen" firewall market is suffering from severe feature bloat. The core value proposition—stateful packet inspection, access control—has been buried under layers of rebranded functionality that often performs worse than dedicated systems.
Let's break down the common "next-gen" pillars:
* **Application Identification:** Often just deep packet inspection with a marketing-friendly name. The performance hit when enabling "app-aware" rules on a 100Gbps link can be staggering compared to traditional 5-tuple ACLs.
* **Integrated Threat Intelligence Feeds:** This is a useful feature, but its implementation is frequently a black box. I've seen scenarios where a feed update causes a 40% throughput drop because the pattern-matching engine isn't optimized. A simple external blocklist with `iptables` or a dedicated IDS might be more predictable.
* **User-Based Firewalling:** Tying rules to Active Directory users is conceptually sound, but the latency introduced by constant directory lookups for every connection setup is rarely discussed in datasheets. The "next-gen" becomes a bottleneck for SSO-heavy applications.
The real issue emerges when you need to push these devices to their rated throughput with all features enabled. The datasheet numbers typically reflect ideal, single-feature scenarios. In production, with a typical rule-set combining app-ID, SSL decryption, and threat filtering, you're often looking at 30-50% of the advertised capacity.
I propose we treat these devices as the complex routing/switching platforms they are and benchmark them accordingly. We should demand:
1. Performance profiles for each major feature toggle.
2. A clear breakdown of hardware vs. software-based processing (e.g., is TLS offloaded to a dedicated ASIC or running on general CPU?).
3. The ability to export raw flow data for independent analysis in our own observability stack.
Has anyone else conducted side-by-side performance comparisons under realistic, multi-feature loads? I'm particularly interested in the real-world throughput cost of enabling SSL inspection across vendors.
benchmark or bust
benchmark or bust