SASE vs. ZTNA: What’s The Difference?
Cloud migration and the rise of hybrid workforces mean perimeter-based security models are becoming increasingly obsolete. Secure Access Service Edge (SASE) and Zero Trust Network Access (ZTNA) have emerged as core frameworks for securing distributed environments.
However, it is sometimes framed as a choice between the two, SASE vs ZTNA. Given that ZTNA is a key component of SASE architecture, this is a misunderstanding of the two frameworks that ignores the enhanced security capabilities of integrating both as part of a comprehensive solution.
Principaux enseignements
- SASE is a cloud-native architecture: SASE combines networking and security services into a unified platform to provide secure, optimized access for users anywhere
- ZTNA is a security framework: ZTNA enforces least privilege access by verifying user based on identity and contextual factors such as device posture, time of day, and location before granting application-level connectivity
- While they are both vital aspects of modern cybersecurity, there are clear differences: The main SASE vs ZTNA difference is the much broader scope of SASE compared to relatively focused ZTNA solutions that provide secure access controls
There are significant benefits to SASE and ZTNA integration: ZTNA is ideally rolled out as part of a comprehensive SASE platform like Check Point SASE from Check Point, a best-in-class security solution that maintains network performance.
Qu’est-ce que le SASE ?
Secure Access Service Edge is a cloud-native framework that converges networking and security into a single platform. SASE allows organizations to provide safe and fast access to applications, data, and services regardless of user location while also streamlining operations. It combines Software Defined-Wide Area Networking (SD-WAN) with a suite of security technologies, including:
- Zero Trust Network Access (ZTNA)
- Passerelle Web sécurisée (SWG)
- Firewall-as-a-Service (FWaaS)
- Courtier en sécurité pour l’accès au cloud (CASB)
What is ZTNA?
Zero Trust Network Access (ZTNA) is a security framework that removes implicit trust based on location by verifying every user and device before granting access to specific applications or resources.
Traditional perimeter-based security strategies authenticate users at the network edge, then provide broad access controls within the internal network. It assumes users inside the network are safe, or it “implicitly trusts” them.
In contrast, ZTNA takes an identity-based approach that follows the principle “Never Trust, Always Verify.” Users must continually authenticate themselves throughout their session to access different systems. Additionally, ZTNA enforces least privilege access. The practice of only connecting users to the resources they are explicitly authorized to use.
The resulting ZTNA benefits allow you to minimize your attack surface, segment your network, reduce lateral movement, and implement granular access controls based on a range of contextual information (Identity, device posture, etc.). ZTNA enhances security for remote and hybrid users, supports compliance requirements, and integrates seamlessly with SASE for a unified security posture.
Differences Between SASE and ZTNA
While they are both vital aspects of modern cybersecurity, there are clear SASE vs ZTNA differences:
- Secure Access Service Edge is a comprehensive, cloud-native framework that converges networking and security services (including ZTNA) into a single, distributed architecture. It aims to provide secure, optimized connectivity between users and the resources they need to access, regardless of device or location
- Zero Trust Network Access, on the other hand, is a framework for controlling user access by removing implicit trust, implementing continual authentication, and enforcing the principle of least privilege
The scope of ZTNA is narrower. While SASE offers a broad, all-encompassing security framework, ZTNA focuses primarily on access controls, allowing only authenticated and authorized users to gain access to critical business resources.
However, ZTNA is a fundamental component of SASE security models. SASE protects corporate systems by restricting access following zero trust principles. It does this across all sites, devices, and users, from internal systems out to the network edge. ZTNA integration complements other SASE security components to deliver layered protection for diverse environments and distributed users.
Beyond the difference in SASE vs ZTNA scope and integration, there are also key SASE and ZTNA differences when it comes to deployment. SASE is usually rolled out via a cloud-based platform that includes global points of presence (PoPs), whereas ZTNA deployments may be simpler and targeted, depending on the organization’s needs.
Independent ZTNA solutions can replace legacy VPNs for secure remote access. This is a strong option for organizations not ready to fully transition to a SASE architecture. In these scenarios, ZTNA serves as an upgrade for distributed teams, shifting focus to identity-based security controls without a complete network transformation.
Table highlighting key SASE and ZTNA differences:
| Secure Access Service Edge (SASE) | Zero Trust Network Access (ZTNA) | |
| Scope | Comprehensive framework that integrates networking and multiple security services | Provides access controls based on identity and contextual factors |
| Main Goal | Secure, reliable, and fast connectivity between users and business resources regardless of location | Remove implicit trust and enforce continual authentication when users access business resources |
| Composants | SD-WAN, SWG, CASB, FWaaS, and ZTNA | Identity verification, device posture checks, contextual access policies, and network segmentation |
| Architecture | Cloud-native framework built on a global points of presence network | Either cloud-based or on-premises. |
| Intégration | Includes ZTNA as a core component | Can operate independently or be integrated within a SASE solution |
| Déploiement | Large-scale transformation that can require phased migration | Smaller-scale, can be deployed quickly |
In short, SASE is a comprehensive framework for modern networking and security functionality. ZTNA is both a critical building block within SASE and a viable independent security solution for organizations that want to modernize access control without undergoing a full-scale network overhaul.
The Benefits of Combining SASE and ZTNA
While ZTNA can operate independently, there are significant benefits to SASE and ZTNA integration. Organizations deploying a SASE architecture gain ZTNA benefits combined with the scalable and flexible networking and security capabilities of other cutting-edge technologies. Within this architecture, ZTNA handles access control, verifies users and enforces the principle of least privilege ensuring users only have access to what they need based on their role.
In practice, as a user makes an access request, ZTNA verifies their identity and tracks contextual information to understand the associated risk. If access is granted, other SASE components inspect the traffic, apply security policies, and allow the connection. ZTNA determines if it is safe for a user to connect to a resource. Then other technologies ensure the data transferred remains protected, monitored, and arrives as quickly as possible.
However, SASE and ZTNA integration offer more than authenticating users and minimizing allowed requests. The enhanced visibility provided by SASE components offers more contextual data to feed back into ZTNA risk analysis, enabling granular access control and enhanced security measures for more suspicious requests. Finally, ZTNA principles such as network segmentation reduce the potential impact of attackers gaining unauthorized access to SASE networks by limiting lateral movement.
Key benefits of combining SASE and ZTNA include:
- Holistic Security Framework: ZTNA locks down access, while SASE layers on comprehensive protection across all traffic and locations
- Reduced Attack Surface: Users connect only to what they need due to ZTNA, while all traffic is inspected and secured inline using other SASE components
- Simplified Operations: SASE and ZTNA integration provides an easy, enforceable deployment method, allowing organizations to manage all of their networking and security needs through a single cloud-based platform
- Scalability: This combined approach can adapt to scale and adapt with workforce models, evolving compliance requirements, and emerging threats
Use Cases for SASE and ZTNA
Examples of use cases include using ZTNA to:
- Replace legacy VPNs for secure remote access
- Enforce least privilege access to sensitive applications
- Protect third-party or contractor access to internal systems
And SASE for:
- Connecting branches using a single, centralized framework
- Securing hybrid and remote workforces at scale
- Supporting cloud migration
- Providing consistent policy enforcement across global locations
- Maintaining regulatory compliance and protecting data across distributed environments
Again, framing it as SASE vs ZTNA is short-sighted, as they can combine for greater rewards and cater to different organizations. SASE is ideal for organizations seeking a unified approach to networking and security across distributed environments. ZTNA is best suited for organizations modernizing access control without overhauling their entire network.
Best Practices for Deploying SASE and ZTNA
Deploying SASE and ZTNA requires aligning security, networking, and business objectives into a cohesive strategy. By following proven best practices, organizations can maximize the benefits, avoid common pitfalls, and ensure a smoother transition for both users and IT teams.
Best practices include:
- Assess Current Infrastructure: Identify existing security tools, network architecture, and gaps to determine where SASE and ZTNA can provide the most value
- Prioritize User Experience: Ensure performance and usability are maintained, especially for remote and mobile workers
- Integrate Gradually: Roll out ZTNA first if replacing VPNs, then expand into the complete SASE framework in phases
- Unify Policy Management: Use centralized controls to apply consistent policies across all locations, devices, and applications
- Monitor and Optimize Continuously: Leverage analytics and reporting to refine access policies, detect threats, and improve performance
- Plan for Scalability: Choose solutions that can adapt to future workforce growth, cloud expansion, and evolving threats
Maximize Security with Check Point SASE from Check Point
The idea of SASE vs ZTNA feels irrelevant when you see the capabilities of modern platforms like Check Point SASE from Check Point. With advanced security capabilities that cover your entire network, Check Point SASE uses ZTNA to provide full-mesh private access using granular controls to connect any user or site to any user, site, or resource. Learn more about the ultimate SASE solution by contacting Check Point and organizing a call with a member of our sales team.
