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Knowledge base Updated: February 5, 2026

The SASE revolution: FortiSASE's approach to secure access to edge services

How FortiSASE is revolutionizing secure access to edge services.

Łukasz Szymański Łukasz Szymański

The world of work and the way we access applications and data has fundamentally changed. The traditional model, in which users connected to a central corporate network protected by a robust perimeter firewall, is becoming less and less relevant. Today, we work from anywhere, using applications hosted in the cloud (SaaS), and data is more distributed than ever before. In this new, decentralized reality, we need a new approach to security and networking - one that follows the user and the application, regardless of their location. It is this need that the Secure Access Service Edge (SASE) architecture addresses, and FortiSASE is the leading implementation of this concept from Fortinet. At nFlo, we understand that the future of security lies in the convergence of networks and protection delivered from the cloud, so we’re bringing you a solution that revolutionizes the way organizations provide secure access to edge services.

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What is SASE architecture and how is it changing the approach to network security?

SASE, a term popularized by analyst firm Gartner, is a cloud architecture that combines network (WAN) and network security functions (such as SWG, CASB, ZTNA, FWaaS) into a single, integrated service delivered from a global network of points of access (PoPs). Instead of routing all remote user traffic through a central data center for security inspection (which generates latency and bottlenecks), SASE moves the point of security policy enforcement as close to the user as possible, at the network edge (edge).

This marks a fundamental paradigm shift. Security is no longer tied to a specific location (data center), and is becoming a service oriented around user identity and access context, delivered from the cloud. The user, whether working from home, the office or traveling, connects to the nearest SASE access point, where their traffic is inspected for security and routed directly to the Internet, SaaS applications or private resources. This approach provides consistent protection, improved performance and simplified management compared to traditional, complex network security architectures.

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What challenges of modern hybrid workloads does FortiSASE solve?

The hybrid working model, while offering flexibility, has created a number of challenges for IT and security departments. FortiSASE directly addresses these problems. First and foremost, it solves the problem of inconsistent security for users working remotely. Instead of relying on different, often less advanced security for home networks, FortiSASE provides a uniform, high level of enterprise-grade protection for every user, regardless of their location.

It also solves a performance problem. The traditional routing of all remote user traffic through a central VPN to a data center to then exit to the Internet or SaaS applications generates significant latency. FortiSASE, through a global network of PoPs, allows direct and optimized access to cloud applications and the Internet, significantly improving the user experience. It also addresses the complexity of managing multiple point security solutions (VPN, SWG, CASB, etc.), consolidating them into a single, centrally managed platform. Finally, it supports the implementation of Zero Trust strategies, providing granular access control based on identity and context, not just location on the network.

How does FortiSASE combine network and security functions in a single solution?

The strength of FortiSASE lies in the convergence of key network and security functions into a single, integrated platform delivered from the cloud. Instead of deploying and managing separate devices or services for each of these functions, organizations get a cohesive solution that includes:

  • Secure Web Gateway (SWG): Web traffic filtering, malware and phishing protection, web access control.

  • Firewall-as-a-Service (FWaaS): Advanced next-generation firewall (NGFW) features, such as application control and Intrusion Prevention System (IPS), applied to user traffic.

  • Zero Trust Network Access (ZTNA): Secure, granular access to private applications (hosted in a data center or private cloud) based on identity and context verification, replacing traditional VPN.

  • Cloud Access Security Broker (CASB): Visibility and control over the use of SaaS (cloud) applications, including data protection (DLP).

  • (Optional) SD-WAN Features: Integrate with Fortinet SD-WAN solutions to optimize routing and security for branch offices.

This convergence into a single, cloud-based service simplifies architecture, reduces management complexity, and ensures consistent application of security policies for all users and devices.

What key components make up the FortiSASE solution?

The FortiSASE solution is based on several integrated components that work together to provide comprehensive protection and connectivity:

  • FortiClient Unified Agent: Software installed on endpoints (laptops, desktops, mobile devices) that acts as a SASE client. It is responsible for securely routing traffic to the nearest FortiSASE PoP, enforcing some of the policies locally, and providing information about the security status of the device (posture assessment).

  • Global Network of Points of Presence (PoPs): Fortinet’s globally distributed cloud infrastructure running FortiSASE security engines (FWaaS, SWG, ZTNA, CASB). Users connect to the geographically closest PoP, which minimizes latency.

  • Security Engines in the Cloud: A set of PoP-based security services based on FortiOS and FortiGuard Labs technologies that analyze and secure user traffic in real time.

  • Cloud-based Management Console: A unified interface (part of FortiCloud or integrated with FortiManager) that allows administrators to define policies, monitor activity, analyze incidents and manage the entire FortiSASE service.

  • ZTNA Application Gateway (ZTNA): A component (often a FortiGate in a data center or private cloud) responsible for making private applications securely available to FortiSASE users according to Zero Trust policies.

These components form a cohesive architecture that delivers security and connectivity as an integrated cloud service.

How does the FortiClient unified agent work and what benefits does it bring to organizations?

FortiClient plays a key role in the FortiSASE architecture, acting as an intelligent unified agent on end devices. It is much more than just a VPN client. FortiClient integrates multiple functions:

  • SASE/ZTNA Client: Securely routes user traffic (all or selective) to the nearest FortiSASE PoP for inspection and access to resources. Replaces a traditional VPN client for access to private applications.

  • Endpoint Protection (EPP/EDR - optional): Can include advanced malware, exploit and ransomware protection (integrating Harmony Endpoint capabilities) and incident detection and response (EDR).

  • Security Posture Assessment: Verifies that the device meets defined security requirements (e.g., up-to-date system, antivirus enabled, disk encryption) and passes this information to the SASE/ZTNA platform for access decisions.

  • Web (local) filtering: Can enforce basic web filtering policies even when the device is offline.

  • Integration with Security Fabric: Communicates with other elements of Fortinet Security Fabric, exchanging threat information and enabling a coordinated response.

Having a single, unified agent for multiple functions (SASE connectivity, endpoint protection, condition assessment) greatly simplifies the management of a fleet of devices, reduces the number of agents to install and maintain, and provides a consistent user experience.

How does FortiSASE provide secure access to the Internet and web applications?

One of the primary functions of FortiSASE is to act as a Secure Web Gateway (SWG) delivered from the cloud. When a user tries to access the Internet or a web application, their traffic is routed through the nearest FortiSASE PoP. There, it undergoes a real-time, multi-layered security inspection:

  • URL/Web Filtering: Check the reputation of the target website and block access to known malicious, phishing or undesirable categories of sites (according to company policy).

  • Antivirus Protection: scans downloads and web content for known malware.

  • Sandboxing (Threat Emulation): Submitting suspicious, unknown files for analysis in ThreatCloud’s isolated sandbox environment.

  • Intrusion Prevention System (IPS): Detecting and blocking attempts to exploit known vulnerabilities in browsers or web applications.

  • SSL/TLS Inspection: The ability to decrypt HTTPS traffic for full analysis by the above security engines.

As a result, users gain secure access to Internet resources, protected from a wide range of threats, regardless of which network they connect from.

How does FortiSASE protect access to privately hosted applications by the company?

Remote access to applications hosted in one’s own data center or in a private cloud has traditionally been via VPN. FortiSASE here introduces a modern approach based on Zero Trust Network Access (ZTNA). Instead of granting a user broad access to the entire corporate network once a VPN connection is established, ZTNA works on a “never trust, always verify” basis and grants access only to specific applications, based on continuous verification of the user’s identity and the security status of their device.

In the FortiSASE architecture, the user authenticates to the service (often using MFA and integration with the company’s IdP, such as Azure AD). A FortiClient agent on his device transmits security status (posture) information. When a user attempts to access a private application, FortiSASE (acting as a decision point) evaluates the context of the request (identity, device state, location, etc.) and, based on this, dynamically grants (or denies) access to that specific application only, through a secure, encrypted tunnel to the ZTNA Application Gateway (ZTNA). This gateway is usually a FortiGate located near the application. This approach is much more secure than a traditional VPN, as it minimizes the attack surface and limits the possibility of lateral traffic if a device or user account is compromised.

Summary: Key Components of FortiSASE

  • FortiClient unified agent: SASE/ZTNA client, optional EPP/EDR, security assessment - all in one.

  • Global PoP (Points of Presence) network: Fortinet’s distributed cloud infrastructure where security engines run.

  • Cloud security engines: Integrated SWG, FWaaS, ZTNA, CASB services based on FortiOS and FortiGuard.

  • Central management console: Unified cloud interface (FortiCloud/FortiManager) for policy definition and monitoring.

  • ZTNA Gateway: A component (e.g., FortiGate) in a data center/private cloud that enables secure access to internal applications.

How is access control for SaaS applications implemented in the FortiSASE solution?

Software-as-a-Service (SaaS) applications, such as Microsoft 365, Salesforce and Google Workspace, have become an integral part of the workplace. However, their use raises new challenges related to data security and access control. FortiSASE integrates Cloud Access Security Broker (CASB) functionality to provide visibility and control over users’ use of SaaS applications.

First, FortiSASE can identify traffic routed to thousands of SaaS applications, giving administrators insight into what cloud services are actually being used in the organization (known as Shadow IT Discovery). Second, it enables enforcement of granular access policies for authorized SaaS applications. For example, you can allow access to a company’s Microsoft 365 account, but block logins to private accounts.

Third, FortiSASE’s CASB features can provide data protection for SaaS applications (DLP) by monitoring and blocking attempts to share sensitive information outside the organization or download it to unmanaged devices. Finally, it can offer protection against SaaS-specific threats, such as malware transmitted through file-sharing services or phishing attacks inside collaboration platforms. This integrated control over access and data in SaaS applications is a key component of comprehensive protection in the SASE model.

Why are global access points (PoPs) critical to FortiSASE performance?

The SASE architecture is based on a globally distributed network of Points of Presence (PoPs). These are data centers where the network and security engines of the SASE provider run. Users, regardless of their location, are automatically directed to the geographically closest PoP. This is fundamental to performance and user experience.

Instead of routing all traffic through a remote, central data center, users access Internet resources and SaaS applications through a local PoP. This minimizes network latency (latency) and provides much faster response times. In addition, traffic between PoPs in the global network of the SASE provider is often optimized, further improving the efficiency of access to resources hosted in other regions. The denser and more distributed the SASE provider’s network of PoPs (and Fortinet has one of the largest global networks), the better performance and lower latency for users around the world.

How does artificial intelligence and machine learning support security in FortiSASE?

Artificial intelligence (AI) and machine learning (ML) are playing an increasingly important role in modern security solutions, including FortiSASE. They are being used on many levels to increase security effectiveness and automate operations:

  • Zero-day threat detection: AI algorithms analyze traffic and behavior to look for anomalies and unusual patterns that may indicate new, previously unknown attacks that bypass traditional signatures (e.g., within IPS, antivirus or sandboxing engines).

  • Anti-phishing protection: AI helps identify phishing sites based on analysis of their content, structure and context, even if they are not yet on blacklists.

  • User and device behavioral analysis (UEBA): ML models can learn normal user and device behavior patterns and then detect suspicious deviations that may indicate a compromised account or device.

  • Intelligent prioritization of alerts: AI helps correlate incidents and assess risks, allowing SOC teams to focus on the most relevant incidents.

  • Response automation: AI can support decision-making to trigger appropriate response playbooks for detected threats.

By leveraging AI/ML, FortiSASE is able to provide more proactive, intelligent and adaptive protection in the face of ever-evolving threats.

How does FortiSASE simplify the management of security policies?

One of the main promises of the SASE architecture is to simplify security management. FortiSASE delivers on this promise by consolidating many security and networking functions into a single platform, managed through a central, cloud-based console. Instead of configuring and maintaining separate policies for VPN, SWG, CASB, ZTNA and firewall, administrators can define unified security policies that are applied consistently to all users, regardless of their location or how they access resources.

These policies can be based on user identity (retrieved from Azure AD, for example), user group, device type and security status (thanks to FortiClient), location, and target application or resource category. The ability to create dynamic tag-based policies further simplifies management in rapidly changing cloud environments. This centralization and unification significantly reduces administrative complexity, minimizes the risk of configuration errors, and provides a consistent level of protection across the organization.

What are the business benefits of implementing FortiSASE in an organization?

Implementing FortiSASE is not just an investment in technology, but a strategic decision that brings tangible business benefits. First and foremost, it enhances an organization’s security by providing consistent enterprise-grade protection for all users and devices, regardless of location, reducing the risk of data breaches, ransomware attacks and other incidents. At the same time, it significantly improves the user experience (UX) of users working remotely or hybrid, eliminating the latency associated with traditional VPNs and providing fast, direct access to cloud applications and the Internet.

FortiSASE also leads to simplified IT architecture and reduced operational complexity, consolidating multiple point solutions into a single platform and simplifying policy management. This translates into a lower total cost of ownership (TCO) for security and network remote access infrastructure. By supporting secure remote and hybrid work, FortiSASE increases workforce flexibility and productivity, which is critical for modern organizations. Finally, it facilitates regulatory compliance requirements by providing consistent control and visibility.

For which companies and industries is FortiSASE the most suitable solution?

FortiSASE is a solution that benefits organizations of all sizes, but is particularly well suited to companies and industries that:

  • Have a large number of remote or hybrid employees: Where ensuring consistent and secure access from outside the office is a priority.

  • They use cloud applications (SaaS) intensively: And they need secure, efficient access to these services and control over their use.

  • They operate in a multi-branch model: Where SASE can simplify and secure connectivity between branches and central and cloud resources (often in conjunction with SD-WAN).

  • They are migrating infrastructure and applications to the public cloud: And they need a cloud native security solution.

  • They want to simplify their security architecture: Consolidating multiple point solutions (VPN, SWG, CASB, FWaaS) into a single platform.

  • Implement a Zero Trust strategy: Where granular, contextual access control is key.

  • They operate in industries with high security and compliance requirements: Such as finance, healthcare, and the public sector.

How does FortiSASE reduce enterprise operating costs (TCO)?

Implementing FortiSASE can lead to a significant reduction in the Total Cost of Ownership (TCO) of security and remote access infrastructure compared to traditional architectures. The consolidation of multiple functions (SWG, FWaaS, ZTNA, CASB) into a single platform eliminates the need to purchase, deploy and manage multiple separate products from different vendors, reducing both capital (CAPEX) and operating (OPEX) costs.

The cloud service (SaaS) model eliminates the costs associated with purchasing and maintaining hardware infrastructure in a data center. Simplified, centralized policy management reduces administrators’ workload. Automation of threat detection and response reduces incident handling costs. Improved performance for remote users can translate into increased productivity. Finally, a pay-as-you-go pricing model (often based on number of users or usage) allows for more flexible and predictable budgeting of security costs. While the initial investment in an SASE can be significant, the long-term operational savings and risk reduction often make the TCO lower than traditional approaches.

How does FortiSASE implement the Zero Trust Network Access concept?

FortiSASE is a key tool for implementing a Zero Trust Network Access (ZTNA) strategy, which is a modern alternative to traditional VPN. Following the principle of “never trust, always verify,” FortiSASE ensures that access to private applications (hosted in a data center or private cloud) is granted only to authorized users, from trusted devices, and only to those applications they need access to.

The process is based on continuous contextual verification:

  • User authentication: Strong authentication, often multi-factor authentication (MFA), integrated with the company’s identity provider (IdP).

  • Device health assessment: The FortiClient agent checks whether the end device meets defined security policies (e.g., up-to-date system, antivirus enabled, no malware).

  • Dynamic access decision: Based on the user’s identity, device status and other contextual factors (e.g., location, time of day), FortiSASE decides whether to grant access to a specific application.

  • Secure per-application tunnel: Access is through a secure, encrypted micro-tunnel created only for that one application, rather than to the entire network.

This granular, contextual approach significantly reduces the attack surface and limits the possibility of lateral traffic compared to a traditional VPN, providing the foundation for secure access in modern work environments.

What is the process of deploying FortiSASE in an existing IT infrastructure?

Deploying FortiSASE as a cloud service is typically much faster and simpler than building a traditional remote access and security infrastructure. Key steps include:

  • Planning and design: Understand user needs, identify applications (SaaS and private) to which access is needed, define security and access policies.

  • Service subscription: Select the appropriate FortiSASE license plan and activate the service in the FortiCloud portal.

  • Identity Provider (IdP) Integration: Connect FortiSASE to an existing identity management system (e.g., Azure AD, Okta) for user authentication.

  • FortiClient agent deployment: Distribute and install the unified FortiClient agent on users’ endpoint devices (existing endpoint management tools can be used).

  • Policy configuration: Define security policies (SWG, FWaaS, CASB) and ZTNA access policies for private applications in the central console.

  • ZTNA gateway configuration (if applicable): Deploy and configure FortiGate as a ZTNA application gateway in a data center or private cloud.

  • Testing and production deployment: Gradual deployment of the service to user groups, monitoring performance and tuning policies.

Although the process is simplified, the support of an experienced partner like nFlo can be valuable in the planning, configuration and optimization phases.

What are the differences between a traditional VPN and the SASE approach offered by Fortinet?

Traditional VPN (Virtual Private Network) and SASE (including FortiSASE with ZTNA) are used to provide secure remote access, but they do so in fundamentally different ways:

FeatureTraditional VPNFortiSASE (with ZTNA)
Access ModelNetwork-level access to the entire networkAccess only to specific applications (application-level)
TrustAlleged post-merger trustZero Trust (“Never trust, always verify”)
VerificationMainly when connectingContinuous verification of device identity and status
ArchitectureTraffic routed through a central data centerTraffic routed through global PoPs, directly to the target
PerformanceOften introduces latency (backhauling)Optimized, lower latency for SaaS/Internet
SecurityLarger attack surface area, risk of lateral movementSmaller attack surface area, per-application segmentation
ManagementManagement of VPN infrastructure, FW policiesCentral management of policies in cloud
ScalabilityLimited by VPN concentrator capacityHigh, elastic cloud scalability

The SASE/ZTNA approach offered by FortiSASE is much more secure, efficient and better suited to the realities of hybrid workloads and cloud applications than a traditional VPN.

How does FortiSASE provide consistent protection regardless of the user’s location?

A key advantage of the SASE architecture, including FortiSASE, is its ability to provide a uniform level of protection for all users, no matter where they connect from - whether from the office, from home, or from a coffee shop on the other side of the world. This is made possible by several elements:

  • FortiClient Agent: Ensures that traffic from the user’s device is always routed to the FortiSASE infrastructure for inspection.

  • Global PoP Network: Regardless of your location, you always connect to the nearest access point where the same security policies apply.

  • Central Policy Management: All security policies (SWG, FWaaS, CASB, ZTNA) are defined and managed centrally in a single console and then enforced consistently across all PoPs.

This provides the organization with the assurance that every user is protected by the same corporate security standards, eliminating the gaps and inconsistencies associated with traditional distributed security architectures.

Summary: FortiSASE - security for the hybrid era

  • Network and security convergence: SWG, FWaaS, ZTNA, CASB in a single cloud service.

  • Secure access from anywhere: Consistent protection for remote, mobile and office users.

  • Optimized performance: Direct access to SaaS/Internet via global PoP network, lower latency.

  • Zero Trust implementation: granular identity- and context-based access to private applications.

  • Simplified management: Central console, unified policies, reduced complexity.

  • Flexibility and scalability: cloud service with automatic scaling and pay-as-you-go model.

How does FortiSASE handle real-time threat monitoring and analysis?

FortiSASE provides continuous monitoring and analysis of traffic flowing through its global PoP network in real time. Each user request is inspected by the appropriate security engines (SWG, FWaaS, IPS, AV, Sandbox, etc.). Detected threats or policy violations are immediately logged and reported in the central management console.

The platform uses FortiGuard Labs’ global threat intelligence, which is updated in real time to provide protection against the latest attacks. AI/ML algorithms further support detection of anomalies and previously unknown threats. Administrators have access to detailed logs and alerts for quick incident analysis. Integration with SIEM/SOAR systems for further correlation and response orchestration is also possible. This continuous monitoring and real-time analysis are key to quickly detecting and neutralizing threats in a dynamic SASE environment.

What are the development plans and innovations in FortiSASE’s offerings for the coming years?

The SASE market is growing rapidly, and Fortinet, as one of the leaders in this segment, will certainly continue to invest in the development of FortiSASE. Although specific plans are subject to change, several directions of innovation can be expected. We are likely to see further expansion of the global PoP network to provide even lower latency and better performance around the world. You can expect to see expanded integration with more cloud platforms beyond AWS and Azure.

The functionality of individual security engines is also expected to evolve, such as the introduction of more advanced CASB inline capabilities, deeper DLP protection, or even more intelligent AI/ML mechanisms for threat detection and behavioral analysis (UEBA). Integration with Fortinet’s broader portfolio, including SD-WAN solutions, OT/IoT protection or analytics platforms, is likely to be further deepened. It is also possible that more diverse licensing packages and deployment options will emerge to better fit the needs of different market segments. The overall trend will be toward an even more integrated, intelligent and automated security platform for distributed work environments.

All in all, FortiSASE is a powerful and comprehensive platform that is Fortinet’s answer to the security and connectivity challenges of the era of hybrid work and cloud dominance. Combining key networking and security functions in a single, integrated cloud service, FortiSASE provides consistent protection, improved performance and simplified management for all users, regardless of their location. It’s a strategic solution for organizations that want to operate securely and efficiently in the new, decentralized digital reality.

**Interested in the SASE revolution and the possibilities FortiSASE offers? Get in touch with nFlo experts. ** We will help you understand how this architecture can transform your organization’s security and support you in the implementation process.

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