# SASE (Secure Access Service Edge): Explained Understand SASE endpoints, how they work, deployment best practices, and why they're essential for modern distributed workforces. ![Neha Kirubakaran](https://cdn.manageengine.com/sites/meweb/images/mobile-device-management/images/neha.png) **Neha Kirubakaran** Article created on: June 26, 2026 10 Mins Read ## Summary The term SASE was coined by Gartner analysts in a 2019 networking hype cycle and [market trends](https://www.zscaler.com/resources/security-terms-glossary/what-is-sase) report. The model describes a shift from perimeter-based security to user-centric protection delivered from the cloud edge. A SASE endpoint moves the security checkpoint off your network and onto the device itself. Every laptop, phone and even printer becomes its own enforcement point, verified before any traffic leaves it, wherever the user happens to be. Your employees aren't sitting in offices anymore. Someone is working from their kitchen, another is in a coffee shop in another country and half your team is scattered across multiple time zones. Your old security approach was built around protecting an office perimeter. It doesn't work anymore. SASE endpoints solve this by making security travel with your employees. ## What is a SASE endpoint? A SASE endpoint is a device running SASE client software. Could be a Windows laptop, a Mac, an iPhone, an Android phone or even a printer. Whichever device has the SASE agent installed becomes a SASE endpoint. The agent watches everything, ensuring that before any data leaves your computer, it is checked and verified. Before you download a file, it's scanned for malicious activity. Before you visit a website, it verifies that site isn't malicious. The fundamental shift is that you're not protecting a network perimeter anymore. You're protecting each individual device. Each device becomes its own security checkpoint. This directly aligns with [zero trust](https://www.manageengine.com/products/desktop-central/zero-trust-security.html) network access. Don't trust anyone just because they're on your network. Verify everything. Check everyone. Continuously. Endpoint Central's [Private Access](https://www.manageengine.com/products/desktop-central/private-access.html) enforces this principle across all your endpoints. ## How does SASE work? *SASE connection flow: device check, cloud verification, threat analysis, policy decision, direct routing.* When someone opens their laptop and tries to connect, here's what happens in the background: - **Local policy check.** The SASE client catches the connection before it leaves the device. Local rules get checked right there. Is this application allowed? Should this type of traffic be permitted? This happens instantly on the device itself, preventing latency and adding a layer of security immediately. - **Secure tunnel.** The connection gets encrypted and sent through a secure tunnel to your SASE infrastructure in the cloud. Everything inside stays private. - **Multi-factor authentication.** Once it reaches your cloud gateway, the system checks your credentials. A password won't cut it. You need multi-factor authentication (a fingerprint, a code from your phone or a security key). Something that proves you really are who you claim to be. - **Device health verification.** The system then verifies your device is actually healthy. Windows patches up to date? Antivirus running? Firewall enabled? If your device is out of compliance, the system restricts your access. A compromised device is not trusted, even if you have legitimate credentials. - **Threat inspection.** Your traffic gets scanned for malware, phishing attempts and anything that looks suspicious. Random Forest algorithms examine file characteristics and achieve detection accuracy around [98.47 percent](https://ijeecs.iaescore.com/index.php/IJEECS/article/view/38334) on malware classification, while neural networks reach [94.5 percent](https://link.springer.com/article/10.1007/s44196-025-00783-x) accuracy on more complex, obfuscated attacks. Using both approaches together means what one misses, the other catches. All of this happens in milliseconds. - **Policy enforcement.** Your organization's security policies make the final decision. Based on the user, the device and the context, can this connection happen? Is this person allowed to access this resource from this device type? The system decides. - **Direct routing.** If everything checks out, traffic goes directly to where it needs to go. Not back through headquarters. Not through some central gateway thousands of miles away. Straight to the application, encrypted the whole way. The entire process takes milliseconds, so your employee doesn't notice any delay. ## Types of endpoints supported by SASE Different devices work differently with SASE: ### 1. Windows computers. Windows is the backbone of enterprise security. SASE gives you the most control on Windows. You can [block USB ports](https://www.manageengine.com/products/desktop-central/help/device-control/dc-overview.html), prevent [certain printers](https://www.manageengine.com/products/desktop-central/help/device-control/dc-overview.html) from connecting, [stop specific applications](https://www.manageengine.com/products/desktop-central/help/application-control/ac-overview.html) from running, inspect encrypted traffic or scan every download. Windows allows SASE to do everything you need because the operating system was built for this kind of deep integration. ### 2. Mac computers. More companies are bringing Macs into their environments, especially design teams and tech companies. Apple changed things by [moving away from kernel extensions](https://www.manageengine.com/mobile-device-management/blog/system-extensions-are-replacing-macos-kernel-extensions-how-will-this-affect-you.html), which made things trickier. Now SASE uses system extensions instead. You still get strong protection. Mac intentionally limits where SASE can operate for security reasons, a design choice that prevents malware from running deep in the system. ### 3. iPhones. Due to iOS architecture limitations, SASE on iOS uses [VPN tunneling](https://support.apple.com/guide/deployment/vpn-overview-depae3d361d0/web), handles DNS queries and manages unencrypted HTTP traffic. For HTTPS, protection happens at the app level. Your organization controls which apps people can use through mobile device management, saying "use this official version of Salesforce, not some random app." ### 4. Android phones. Android gives you more options. When you set up [mobile device management](https://www.manageengine.com/products/desktop-central/mobile-device-management-mdm.html), it creates a work profile. Company apps and data live in one container while personal apps and data live in another, completely separate. SASE encrypts everything in the work profile, enforces your policies and blocks unapproved apps. The user's personal data stays untouched. See how Endpoint Central manages [Android devices](https://www.manageengine.com/products/desktop-central/mobile-device-management-android.html) for more details. ### 5. Printers, cameras and other smart devices. You can't install security software on a smart printer. It runs on proprietary firmware. SASE handles this at the network level. Your cloud gateway knows which devices are legitimate, approves their traffic and blocks anything that doesn't match your approved patterns. Not as granular as endpoint protection, but it stops a compromised printer from becoming a backdoor into your network. ## Components of a SASE endpoint SASE endpoints work because several different pieces work together: ### 1. Client agent. This is the software running on your device. It's lightweight because you don't want something draining your laptop battery. The agent intercepts traffic, applies policies locally, encrypts connections, blocks threats and talks to your cloud infrastructure. It updates automatically. You don't manage anything manually. ### 2. Identity verification. SASE verifies your identity through multi-factor authentication, confirming who you claim to be. The system knows your role and what you're allowed to access, but it goes deeper. Where are you connecting from? What time is it? What type of device are you connecting from? All that context matters to the security decision. ### 3. Device health checks. Device health checks are continuous. SASE verifies security patches are current, antivirus is running, firewall is enabled and hard drive encryption is active. If any check fails, access stays restricted until the issue is resolved. [Device compliance](https://www.manageengine.com/products/desktop-central/compliance.html?ec_solutions_drop) features enforce these checks automatically. ### 4. Secure web gateway. This inspects web traffic. Malicious URLs don't load. Phishing sites get blocked. Downloads get scanned and machine learning spots threats that haven't even been formally discovered yet. It enforces policies about what sites people can visit. ### 5. Firewall as a service. Traditional firewall rules, but in the cloud. Block traffic based on ports and protocols. Stop port scanning. Prevent DDoS attacks. It's the network-level protection that security has always relied on. ### 6. Cloud access security broker. When people use Salesforce, Microsoft 365, Google Workspace or similar cloud apps, this component watches. It detects when people are using unauthorized cloud services, stops data from leaving your organization and spots when an account looks compromised. ### 7. Real-time threat intelligence. SASE endpoints worldwide constantly report threats. A new ransomware variant appears somewhere and within hours, it's detected and analyzed. Your endpoint knows about it and protection gets updated automatically. ## Benefits of SASE for endpoint connectivity in enterprises - **Remote work stops being a security nightmare.** Employees get the same protection whether they're in an office or on public WiFi anywhere in the world. No VPN slowdowns. No frustration. - **Attackers can't spread through your network.** Infected devices are isolated automatically. They can't access other systems or data. - **Everything feels faster.** Traffic goes directly to the nearest cloud point instead of backhauling to headquarters. London-based employees using London-hosted services actually get London speeds. - **One set of policies, applied everywhere.** Define security rules once and enforce them across all users and devices. No separate configs for remote workers. Consistency eliminates configuration gaps that create vulnerabilities. - **You actually see what's happening.** Full visibility into apps used, cloud services accessed, and data movement. This helps catch threats faster and simplifies compliance audits. - **Managing non-compliant devices becomes automatic.** SASE detects unpatched or misconfigured devices and restricts access automatically. Users see exactly what needs fixing. - **The numbers work out financially.** No expensive on-premises hardware or VPN infrastructure. Reduced management overhead and fewer security incidents. ROI usually comes within months. ## SASE vs. traditional security solutions | Security Approach | Traditional Security | SASE | |---|---|---| | Protection model | Protects network perimeter. Everything inside trusted, everything outside hostile. | Protects the user. Security travels with employees everywhere. | | Remote access | VPN routes all traffic back to headquarters, creating bottlenecks and slow performance. Limited visibility into user activity. | Direct cloud delivery. Granular control per user, device, and resource type. Full visibility into all connections. | | Threat detection | Firewalls block only by IP and port. Miss application-level attacks, lateral movement, and zero-day malware. | Inspects at application level. Detects behavioral anomalies, prevents lateral movement, catches zero-day threats with machine learning. | | Tool integration | Multiple disconnected tools from different vendors. Gaps between systems allow threats to slip through. | Integrated platform. All components communicate instantly. One threat detection triggers an organization-wide response. | *Traditional perimeter security versus SASE user-centric approach diagram.* ### Security approach comparison ![sase-endpoint-flow-diagram](https://cdn.manageengine.com/sites/meweb/images/desktop-central/images/sase-endpoint-flow-diagram.png) ## How to implement SASE successfully - **Start with an assessment.** Most organizations skip this and regret it. Map your device inventory. Count your Windows, Mac, iOS, and Android devices. Document your operating systems and versions, because legacy machines often fail device-health checks. List the applications people actually use, including internal legacy apps that don't play well with VPN tunneling. Identify your compliance requirements upfront. SASE deployments that collide with regulatory rules mid-rollout create chaos. - **Run a pilot with a real-world group.** Pick your IT team or a single department. Fifty to a hundred people is the sweet spot. Run it for two to four weeks, not two weeks. In practice, device-health verification surfaces problems that authentication doesn't: machines with outdated antivirus, encryption disabled, or patches missing fail compliance checks and get blocked. DNS resolution breaks for internal services. Some legacy applications can't tunnel properly. Collect detailed feedback on where users get stuck, not just "does it work?" - **Roll out in waves, and stick to the timeline.** Five percent in week one. Another twenty-five percent by week two. Fifty percent by week four. Approaching full deployment by week eight. This isn't conservative. It's practical. Gradual rollout gives your IT team time to handle support escalations before your whole organization is dependent on the new system. It also lets you catch policy conflicts before they affect everyone. - **Adjust your policies continuously.** Your initial policies will be too strict or too loose. Users will encounter legitimate business scenarios you didn't anticipate. A field sales team needing offline access. A contractor accessing from a shared device. An internal tool that needs an exception. Refine policies based on real usage patterns, not assumptions. - **Integrate with your existing tools.** SASE doesn't replace mobile device management or your identity system. It works alongside them. The friction point here is data flow: make sure your MDM compliance data feeds into your SASE policies, and your identity system (Active Directory, Okta, etc.) stays synchronized. Misalignment here means devices pass MDM checks but fail SASE checks, creating user confusion. Endpoint Central integrates seamlessly with your existing MDM and identity infrastructure. - **Keep monitoring after rollout.** Watch for three things: threat detection (are you actually catching attacks?), user productivity (is SASE slowing people down?), and compliance drift (are policy violations increasing?). Regular reviews help you spot when policies are too permissive or too restrictive. ## SASE endpoint in a hybrid work environment Hybrid work requires consistent security across distributed locations. SASE delivers that without complexity. Remote workers receive the same protection as office staff. Residential networks lack enterprise firewalls and perimeter security. SASE inspects traffic and enforces policies directly at the device level, eliminating the need for VPN tunnels and the latency they introduce. Branch offices no longer require costly backup connectivity. Small offices once depended on dedicated links back to headquarters or expensive redundant internet. SASE lets branches connect directly to cloud gateways, making them cheaper, faster, and more reliable. Traveling employees stay protected across networks. Hotel WiFi, airport networks, cellular connections, and coffee shop connections all carry the same risks. SASE encrypts and inspects all traffic regardless of the underlying network. Mobile devices receive the same security as laptops. Smartphones and tablets now handle business data as frequently as computers. SASE extends protection through work profiles and VPN frameworks, securing data across all device types. Endpoint Central manages mobile endpoints with consistent policy enforcement. Security and experience remain consistent across locations. Hybrid workforces don't encounter different protection levels or performance degradation based on location. Consistent speed, protection, and access actually improve user satisfaction and reduce support friction. ## Final thoughts The office perimeter security model is dead, your workforce is distributed, applications are in the cloud, devices are diverse and traditional security approaches don't fit this reality anymore. SASE endpoints solve the actual problem you're facing. They verify, inspect and enforce granular policies. They adapt to modern work. You don't need to implement SASE overnight. Most organizations do this thoughtfully, in phases. Minimize disruption while maximizing security improvements. If you're still running VPNs, if remote workers complain about slow connections, if you worry about attackers spreading through your network or if you want real visibility into what's happening, SASE endpoints deserve your attention. ## About the author ![icon-1](https://www.manageengine.com/ems/images/icon/meet-the-author-icon.svg) ![Neha Kirubakaran](https://cdn.manageengine.com/sites/meweb/images/mobile-device-management/images/neha.png) **Neha Kirubakaran** is a Content Specialist working at ManageEngine. With a strong focus on unified endpoint management and endpoint security, she has a rare ability to make the unglamorous side of IT like feel like something worth paying attention to. Through her educative writing, Neha helps organizations navigate the evolving landscape of device security and endpoint management with confidence. ## Frequently asked questions on SASE endpoints ### 01. What is the main difference between SASE and a traditional VPN? A traditional VPN creates an encrypted tunnel between a device and your headquarters data center. All traffic flows through that tunnel. SASE moves the security checkpoint to the cloud edge, closer to the user. It inspects traffic in real time, blocks threats immediately, and routes users directly to applications without backhauling traffic. This approach is faster, more flexible, and scales better for remote and hybrid workforces. ### 02. How does SASE use AI to improve security? SASE platforms use machine learning to detect threats that rule-based systems miss. AI analyzes patterns in network traffic, identifies anomalies, and flags suspicious behavior in real time. This allows SASE to catch zero-day attacks and advanced threats without waiting for signature updates. AI also helps optimize policies by learning which access patterns are legitimate and which are risky. ### 03. What types of devices are SASE endpoints? SASE protects Windows and Mac laptops, iOS and Android mobile devices, and can extend to branch routers, servers, and IoT devices. Each device type has different capabilities and constraints. Mobile devices typically connect through VPN profiles or work applications. Branch offices connect through IPsec tunnels or SD-WAN overlays. The key is that every endpoint receives consistent security policies regardless of the device type. [Endpoint Central supports all these endpoint types.](https://www.manageengine.com/products/desktop-central/private-access.html) ### 04. Does SASE protect unmanaged (BYOD) endpoints? Yes, but with limitations. SASE can enforce access controls on unmanaged devices by requiring authentication, checking device trust, and inspecting traffic. However, you have less visibility into the device itself. An unmanaged device might pass identity verification but still run outdated software or have malware. Many SASE deployments restrict unmanaged devices to lower-risk applications or require additional authentication steps.