# Firewall as a service
**Wikidata**: [Q120669183](https://www.wikidata.org/wiki/Q120669183)  
**Source**: https://4ort.xyz/entity/firewall-as-a-service

## Summary
Firewall as a service (FWaaS) is a cloud-based network security system that monitors and controls network traffic based on predetermined security rules. As a subclass of both traditional firewalls and the "Everything as a Service" model, it provides firewall functionality delivered via the cloud. FWaaS is a key component of modern security architectures like Secure Access Service Edge (SASE) and Security Service Edge (SSE).

## Key Facts
- **Alias:** Commonly known as FWaaS.
- **Primary Classification:** It is an instance of a software category.
- **Parent Class:** It is a subclass of "firewall," inheriting its core function of monitoring and controlling network traffic.
- **Service Model:** It is a subclass of "Everything as a Service," indicating its cloud-based delivery model.
- **Architectural Component:** FWaaS is considered a part of the Secure Access Service Edge (SASE) framework.
- **Architectural Component:** It is also a part of the Security Service Edge (SSE) framework.

## FAQs
### Q: What does FWaaS stand for?
A: FWaaS is an acronym that stands for Firewall as a service.

### Q: What kind of technology is Firewall as a service?
A: Firewall as a service is classified as a software category. It is a subclass of both traditional firewalls and the "Everything as a Service" (XaaS) model, meaning it applies a cloud-delivery model to network firewall technology.

### Q: What larger security systems include FWaaS?
A: FWaaS is a core component of modern, integrated security frameworks. It is an integral part of both Secure Access Service Edge (SASE) and Security Service Edge (SSE) architectures.

## Why It Matters
Firewall as a service represents a fundamental shift in how network security is delivered, moving from on-premises hardware appliances to a flexible, cloud-based model. This is significant because traditional firewalls are often tied to a physical corporate network, which is inefficient for securing remote workers and cloud applications. FWaaS solves this problem by providing a centralized security layer in the cloud that can protect all users and devices, regardless of their location.

By being a core component of modern frameworks like SASE and SSE, FWaaS plays a critical role in enabling secure digital transformation. It allows organizations to enforce consistent security policies across their entire network, from data centers to branch offices and remote users. This cloud-native approach offers greater scalability, simplified management, and better performance than legacy hardware, making it essential for contemporary IT environments.

## Notable For
- **Cloud-Native Delivery:** Unlike traditional hardware appliances, FWaaS is defined by its classification as a subclass of "Everything as a Service," delivering firewall capabilities directly from the cloud.
- **Integration with SASE:** It is notable for being a foundational component of the Secure Access Service Edge (SASE) framework, which converges networking and security services into a single cloud-delivered platform.
- **Role in SSE:** FWaaS is a key part of the Security Service Edge (SSE) model, which bundles multiple cloud-based security functions to secure access to the web, cloud services, and private applications.
- **Hybrid Classification:** It holds a unique position as a subclass of both "firewall" and "Everything as a Service," bridging the gap between traditional network security principles and modern cloud service delivery.

## Body
### Classification and Hierarchy
Firewall as a service is formally classified as an instance of a software category. Its position within technology hierarchies is defined by two parent classes:
- **Subclass of `firewall`:** As a type of firewall, FWaaS inherits the fundamental purpose of a network security system designed to monitor and control incoming and outgoing network traffic based on a set of security rules.
- **Subclass of `Everything as a Service`:** This classification highlights its delivery model. Unlike a physical appliance, FWaaS is a service provided over the cloud, aligning it with other XaaS (Everything as a Service) technologies.

### Role in Security Architectures
FWaaS is not typically a standalone solution but rather a foundational service within larger, integrated security frameworks.
- **Part of Secure Access Service Edge (SASE):** In a SASE architecture, FWaaS is one of the core security functions that are converged with network capabilities (like SD-WAN) and delivered from the cloud edge.
- **Part of Security Service Edge (SSE):** SSE represents the security-focused subset of SASE. FWaaS is a key service within the SSE platform, working alongside other functions to provide comprehensive threat and data protection.

### Terminology
The entity "Firewall as a service" is most commonly referred to by its alias or acronym, **FWaaS**.