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Securing hybrid work with SASE and Zero Trust

Hybrid work has dissolved the network perimeter. Users connect from homes, branches and mobile devices, and applications live in SaaS and cloud platforms. This white paper explains how Secure Access Service Edge (SASE) brings networking and security together, and how to move towards it in phases.

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Cover of the SNO white paper: Securing hybrid work with SASE and Zero Trust
5SASE components explained
5levels in the SASE maturity model
4phases to implementation

Why perimeter security no longer fits

  • Expanding attack surface: every user, device and cloud app is a potential entry point
  • Complex infrastructure: many disconnected security tools add cost and overhead
  • Poor user experience: VPNs and backhauling create latency
  • Compliance pressure: privacy and audit readiness are harder across distributed environments

What SASE includes

  • SD-WAN for performance and connectivity
  • Secure Web Gateway (SWG) against web threats
  • Cloud Access Security Broker (CASB) to enforce cloud policy
  • Firewall-as-a-Service (FWaaS) for threat protection
  • Zero Trust Network Access (ZTNA) for identity-based access

Zero Trust within SASE

Zero Trust means never trust, always verify. Instead of network-level access, users and devices are continuously authenticated and authorised before they reach an application, based on identity, device posture, location, risk and behaviour.

The maturity model and a phased plan

  • Five maturity levels: perimeter security, hybrid patchwork, partial SASE, unified SASE and optimised Zero Trust
  • Phase 1, assess: audit users, apps and traffic, find exposure gaps and map compliance needs
  • Phase 2, consolidate: reduce tool sprawl, deploy ZTNA and begin cloud traffic routing
  • Phase 3, optimise: centralise policies, automate and improve routing
  • Phase 4, transform: full convergence, continuous validation and real-time risk scoring

Read the full white paper

The challenges of hybrid work, the SASE components, Zero Trust, the maturity model and an implementation plan. PDF, 11 pages, 0.6 MB. No form required.

Download PDF (0.6 MB)