What is FWaaS?
Firewall as a Service
A cloud-delivered next-generation firewall that provides IPS, application control, and threat prevention without on-premises hardware, typically running in the provider's PoPs.
FWaaS moves the next-generation firewall from a physical or virtual appliance at each site to the SASE provider's cloud infrastructure. Traffic from branches, remote users, or data centers is tunneled to the nearest PoP, where the firewall inspects it with the same capabilities expected from an on-premises NGFW: stateful inspection, intrusion prevention (IPS), application identification, and anti-malware.
The primary benefit is eliminating the need to size, deploy, patch, and manage firewall hardware at every location. Policy changes propagate globally from a single console instead of requiring per-device configuration. For organizations with hundreds of branches, this operational simplification is substantial.
FWaaS works best for east-west traffic between branches and for north-south traffic to the internet. The key consideration is whether the provider's PoP locations align with your user and application geography. If the nearest PoP adds 40ms of latency for a latency-sensitive application, the architecture does not work regardless of the firewall's inspection quality. Additionally, organizations with existing NGFW investments should verify that the cloud-delivered firewall offers equivalent IPS signature coverage and application identification depth, as not all FWaaS implementations match their on-premises counterparts.
A cloud-delivered architecture that converges SD-WAN and security services (SWG, CASB, ZTNA, FWaaS) into a single, globally distributed platform.
The security half of SASE, delivering SWG, CASB, ZTNA, and DLP as cloud-delivered services without the SD-WAN networking component.
A cloud or on-premises proxy that inspects all web-bound traffic for malware, enforces URL filtering policies, and prevents data exfiltration over HTTP/HTTPS.
A geographically distributed data center operated by a SASE/SSE provider where security inspection and traffic optimization occur as close to the user as possible.
A traffic processing design in which a single inspection engine applies all security policies (firewall, IPS, DLP, malware scanning) to each packet or flow in one pass, rather than chaining multiple sequential inspection stages.
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