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A secure hybrid-work setup must connect employees, contractors, and partners to the right work resources without treating every device as equally trustworthy. A Secure Access Service Edge (SASE) approach combines networking with cloud-delivered security controls to help apply access policies across offices, homes, and other locations. It can support that design, but it does not replace identity governance, endpoint security, or device management.

Why device ownership matters in a hybrid workplace

A staff member might use an organization-managed laptop at home, a contractor might connect from a device managed by a third party, and an employee might use a personal phone for limited work. Those devices differ in how much the organization can enroll, monitor, update, and assess them. That affects the security information available when deciding whether to grant access.

NIST telework guidance distinguishes organization-controlled, third-party-controlled, and teleworker-controlled devices. The distinction is useful for policy design, not a mandate to adopt one particular access rule. See NIST SP 800-114 Rev. 1 and NIST SP 800-46 Rev. 2, foundational guidance published in 2016.

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The practical challenge is to connect each authorized person to the specific applications and data they need, whether those resources run in a company data center or in the cloud, while applying controls appropriate to the person, device, and resource.

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What SASE brings together

Secure Access Service Edge (SASE) is an enterprise networking approach that combines network connectivity with security capabilities delivered through the cloud. NIST describes SASE within a broader enterprise-network landscape that also includes point solutions, network configurations, security frameworks, and evolving wide-area networking. Its landscape guidance identifies capabilities such as zero-trust network access (ZTNA), secure web gateway (SWG), cloud access security broker (CASB), firewall, and software-defined wide-area networking (SD-WAN). See NIST SP 800-215 and NIST SP 800-207.

  • ZTNA: supports access to specific enterprise resources rather than relying only on a user’s network location.
  • SWG: applies security controls to web access.
  • CASB: provides controls and visibility for cloud-service use.
  • Firewall: enforces rules governing network traffic.
  • SD-WAN: helps connect sites and direct wide-area network traffic.

The SASE label does not guarantee that every offering includes the same capabilities, integrates them in the same way, or produces the same outcomes. Check current product documentation to establish what a particular implementation actually provides and which components must be supplied separately.

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How SASE fits with zero trust

Zero trust is a broader approach to granting access to resources; it does not assume that a user or device should be trusted simply because it is inside a traditional network boundary. NIST’s zero-trust work addresses access to on-premises and multiple-cloud resources for local and remote employees, partners, contractors, and guests. It includes SASE approaches among the ways organizations can implement parts of that design. See NIST’s zero-trust implementation project and its implementation guidance.

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For a hybrid workplace, the useful outcome is policy that can account for who is requesting access and which resource they need, rather than treating every connection from an office, home, or remote network as equivalent. SASE can provide networking and security capabilities for that design; identity governance still determines who should have access, and endpoint and device-management practices still matter.

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What access from BYOD and unmanaged devices requires

Personal and third-party devices may not support the same enrollment, monitoring, or security checks as organization-managed endpoints. Before choosing an access design, decide what the organization can learn about each device and what it will permit when that information is limited or unavailable.

  • Which endpoints can be enrolled, monitored, and assessed by the organization?
  • What access should be available from devices with limited management—for example, only a narrow set of work resources?
  • How will the organization handle missing or stale device-posture information?
  • Who approves exceptions, and how are those exceptions reviewed?

These are design questions that follow from the different device-control models in NIST’s telework guidance; they are not a single policy prescribed by NIST. NIST’s hybrid-access work also provides examples of zero-trust implementation patterns. One example uses an endpoint agent and an identity-aware tunnel through a cloud secure web gateway after access is approved. That illustrates one possible flow, not a universal requirement, compatibility guarantee, or proof that every endpoint needs an installed client. See NIST’s implementation guide.

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How to evaluate a SASE design for hybrid work

Compare designs against the organization’s actual devices, resources, and operating practices rather than relying on the SASE label alone.

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  1. Map capabilities and integration. Identify which of ZTNA, SWG, CASB, firewall, SD-WAN, and endpoint or device-security functions are included, integrated, or supplied by separate systems.
  2. Check device coverage. Ask how the design handles managed endpoints, employee-owned BYOD, contractor devices, and endpoints that cannot support a security agent. Establish what happens when device information is unavailable.
  3. Test resource reach. Confirm that the intended policies can cover private, on-premises, and cloud applications for both local and remote users.
  4. Review access context. Determine which identity and device details the design can use when authorizing requests, and how policy behaves when a relevant signal is missing. The available signals and enforcement mechanics vary by implementation.
  5. Assess operational fit. Consider how the design fits existing network, identity, endpoint-security, and device-management practices, including responsibility for configuration, support, and exceptions.

NIST’s guidance describes a landscape of point capabilities and integrated approaches; it is not a one-size-fits-all product recommendation. The right design depends on the organization’s resource access requirements, device ownership mix, and ability to operate the controls it selects.

What SASE does not replace

SASE is a network and security approach, not a complete substitute for the other controls a device-heavy workplace needs. Organizations still need to manage identities and permissions, protect endpoints, maintain devices they control, and define what work is permitted from devices they cannot fully manage. Treating those responsibilities as separate parts of the access design avoids assuming that a network platform alone can make an unmanaged device safe.

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