+44 3301 333 307 magma@magmacloud.co.uk
Pillar 04

Zero Trust Network Security
& SASE

The network perimeter is gone. Workforce is distributed, applications are SaaS, and traditional firewall-and-VPN approaches leave significant gaps. We design and implement Zero Trust network architecture and SASE/SSE for UK organisations ready to modernise how they secure connectivity.

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From £TBC — fixed fee, scoped after your Ignite Assessment
The Challenge

The network perimeter dissolved. Most security architectures haven't caught up.

Network security built on the assumption of a trusted internal network no longer matches how organisations actually operate. Your workforce is distributed. Your applications are in Azure, M365, and SaaS platforms. Traffic no longer routes through a central office. The VPN and firewall that protected the on-premises estate do very little to protect a cloud-first organisation — and attackers know it.

Zero Trust network security replaces implicit trust with explicit, continuous verification. Every user, device, and connection is authenticated and authorised before accessing any resource — regardless of where the request originates. We design and implement the right Zero Trust controls for your environment: whether that's SASE, Microsoft Entra Private Access, network segmentation, or a phased hybrid modernisation programme.

What We Deliver

Network Security Services

What we deliver
  • Zero Trust architecture design & implementation
  • SASE & SSE solution design (vendor-agnostic)
  • Network segmentation & micro-segmentation
  • NGFW deployment & policy review
  • Secure remote access (replacing legacy VPN)
  • Microsoft Entra Private Access implementation
  • DDoS protection & Azure Front Door
  • Cloud network security (Azure VNet, NSG, WAF)
  • SD-WAN security integration
  • Network detection & response (NDR)
Outcomes you can measure
  • Reduced blast radius on compromise
  • Zero Trust access replacing implicit trust
  • Eliminated legacy VPN exposure
  • Consistent security for hybrid & remote workers
  • Better network visibility & logging
  • Defensible architecture for regulators
How It's Delivered

The Magma Cloud Lifecycle

Zero Trust is a journey, not a project. We work through all six phases — from architecture design through to continuous network monitoring and posture assurance.

01
Strategy
02
Assess
03
Implement
04
Optimise
05
Manage
06
Assure
Related Security Services
Cloud Security

Azure network controls, Virtual WAN, and Private Endpoints.

Cyber Posture Review

Full network security assessment as part of your posture review.

Common Questions

Frequently Asked Questions

Zero Trust is a security model based on never trusting, always verifying — regardless of whether a request originates inside or outside the network. Every user, device, and connection is authenticated and authorised explicitly before being granted access to resources. It replaces the outdated assumption that anything inside the firewall is inherently safe — an assumption that attackers routinely exploit through lateral movement after initial compromise.

SASE (Secure Access Service Edge) converges networking and security functions — including ZTNA, SWG, CASB, and FWaaS — into a cloud-delivered service. If your workforce is distributed, you rely heavily on SaaS applications, and your traffic no longer routes through a central office, SASE is typically the right architectural direction. We assess your current state and recommend honestly — not every organisation needs full SASE, and we won't sell you something you don't need.

By enforcing micro-segmentation and least-privilege access, Zero Trust limits how far an attacker can move laterally if they compromise a single account or device. Instead of having access to everything on the network, a compromised session is constrained to whatever that user or device was explicitly authorised to reach — significantly containing the potential damage of a breach.

Yes. Hybrid environments are where most of our network security work happens. We design Zero Trust controls that span your on-premises estate and Azure — including Azure Virtual WAN, ExpressRoute, Private Endpoints, and Microsoft Entra Private Access for application-level Zero Trust. We work to your pace, phasing the transition to avoid disrupting production systems.

Start with a Free
Ignite Assessment

The Ignite Assessment

A free 30-minute call with a senior security architect. For network security, you leave with a read of where your current architecture creates implicit trust, the top three risks, and a clear view of your Zero Trust roadmap. No pitch deck, no obligation.

  • Free — no charge, no catch
  • 30 minutes with a senior architect
  • Network-specific, honest assessment
  • No obligation to proceed
Zero Trust Specialists

Book Your
Ignite Assessment

Whether you're modernising a legacy network, extending Zero Trust to Azure, or replacing a VPN — we'll tell you exactly where you stand and what to prioritise.

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