Beyond the Hype: Why “FAB Firewall” is the Lightweight Security Layer Your Cloud Needs

If you’ve been following cloud-native security trends, you might have heard the term floating around. No, it’s not a new vendor or a magic button. FAB is an acronym that stands for Filtering, Authentication, and Bridging —three critical functions that, when combined, create a surprisingly nimble and effective security posture.

April 14, 2026 | Reading time: 4 minutes

In a world dominated by Next-Gen Firewalls (NGFW) and Web Application Firewalls (WAF), why does FAB matter? Because traditional firewalls are often too slow, too expensive, or too complex for modern ephemeral workloads.