SASE & Zero Trust Network Access

Secure every site, user and connection

evoila brings Fortinet SASE and zero trust network access into hybrid environments, replacing the VPN and securing branches, remote users and the internet edge.

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Your network no longer has a perimeter

Work no longer happens in one building behind one firewall. Users connect from home, branches need fast and secure links, and traffic goes straight to the cloud instead of a central data centre. The old model of backhauling everything through a VPN is slow and exposes far too much.

evoila delivers SASE with Fortinet, combining network security and zero trust network access in one cloud-delivered edge. Every connection is secured based on identity and context. Users get faster, more reliable access. The legacy VPN can be retired.

Business benefits:

  • Zero trust network access replaces the VPN and shrinks the attack surface
  • One secure edge for branches, remote users, cloud, and internet traffic
  • Faster, more reliable connectivity through integrated SD-WAN

A stolen VPN login gives an attacker the run of your network

A compromised branch spreads quickly when there are no internal controls.

The Challenge

When the network has no edges, every gap becomes a target

The traditional network was built around a central site, with a firewall at the perimeter and a VPN for everyone else. That design breaks under hybrid work and cloud. VPNs grant broad network access once connected, so one compromised device reaches far too much. Backhauling cloud and internet traffic through the data centre adds latency and frustrates users. Branches and OT environments often sit on flat networks with little internal control. Each gap becomes a routine target.

VPN access is too broad

Remote users connected through a VPN land on the network, not on one application. One stolen login is enough for an attacker to move laterally across systems.

Traffic detours hurt performance

Cloud and internet traffic routed through a central data centre adds avoidable latency. Users notice it and productivity pays for it.

Flat branch and OT networks

Branches and operational technology environments often have little or no internal segmentation. One intrusion in the wrong zone spreads without resistance.

Inconsistent protection at the edge

Internet and cloud security often varies depending on where a user is working. Remote users, branch staff and office users rarely get the same level of control.

The good news: network security does not have to follow the location

SASE makes the edge wherever your users and workloads are.

Our Solution

One secure edge for the whole estate


evoila builds SASE with Fortinet, converging network and security into a single cloud-delivered service that follows the user and the workload rather than the location. We assess sites, users and traffic, then design an architecture that secures access everywhere and retires the legacy VPN. Our services include:

Zero Trust Network Access (ZTNA)

Per-application access based on identity and device posture. No device lands on the network. Access is granted to one application, verified and then closed.

FortiSASE Rollout

Cloud-delivered secure web gateway, firewall as a service, and cloud access security for consistent protection wherever users work

SD-WAN

Secure, performant connectivity between sites and to the cloud, without backhauling everything through one location

Network Segmentation

Controlled zones across IT and operational technology environments, limiting how far a threat can travel once inside.

VPN Replacement

Staged migration from legacy remote access to ZTNA, with least-privilege access from day one and no disruption to connectivity.

This is the network layer of zero trust. It connects directly to evoila’s identity-based zero trust work on Microsoft Entra. Identity controls who reaches which application. SASE secures the network path, the sites and the environments that are not Microsoft-centric. Most organisations need both. See also Zero Trust & Identity

Tech-Deep-Dive

Why we offer both Microsoft and Fortinet

Zero trust has two layers, and they answer different questions. evoila delivers both so the architecture is complete rather than half-built.

Identity layer: Microsoft Entra

This controls who, with which device, may reach a given application or dataset. Conditional Access and identity protection make it the right control point for Microsoft-heavy, cloud-centric environments.

See also Zero Trust & Identity

Network layer: Fortinet SASE

This secures the path and the traffic. Remote users connect through ZTNA. Branches get SD-WAN. Internet and cloud access are filtered through secure web gateway and firewall as a service. Internal containment comes from segmentation. It covers hybrid environments, distributed sites, unmanaged and third-party devices, and operational technology that identity tooling cannot reach.

ZTNA in practice

A VPN places a device on the network and trusts it. ZTNA grants access to one specific application after checking identity and device posture, and nothing more. Lateral movement is blocked structurally rather than observed afterwards.

SD-WAN and the edge

Fortinet converges SD-WAN with security. Each site gets fast, direct and secured paths to cloud and internet. Traffic no longer detours through a central choke point.

Segmentation and OT

Fortinet segments networks including industrial and OT zones, helping contain threats in environments where identity-based controls cannot operate.

Technical Advantages

What changes when SASE replaces the legacy stack

1. VPN retired for good

ZTNA grants per-application access, not broad network entry. The attack surface shrinks from day one.

2. Faster access everywhere

SD-WAN gives direct, secured paths to cloud and internet instead of backhaul through a data centre. Users notice the difference.

3. Consistent protection at every edge

The same web, cloud and firewall policy applies whether users are in the office, at home or in a branch.

4. Contained networks

Segmentation limits how far a threat travels, including in OT and industrial zones that identity tools do not reach.

5. Both zero trust layers working together

SASE secures the network path. Microsoft Entra secures identity and application access. Together they form a complete zero trust architecture.

6. Staged, low-risk migration

We retire the VPN in phases. Connectivity stays stable throughout. The legacy system is switched off only once the replacement is solid.

Your partner of choice

Both layers of zero trust from one partner

Many providers focus on identity zero trust or on network security. evoila delivers both and advises where each belongs. We design the identity layer on Microsoft Entra and the network layer on Fortinet SASE, so the architecture works as one system instead of two disconnected projects.
Because evoila also builds private cloud and operates a 24/7 SOC, the SASE design connects to segmentation in the data centre and to monitoring and incident response. Roll-outs are planned in stages so connectivity is never put at risk. evoila is itself ISO 27001 certified.


Architecture before tools

We assess sites, users and traffic first. The Fortinet stack follows the design, not the other way round.

Complete zero trust

Identity on Microsoft Entra. Network on Fortinet SASE. Both layers designed and implemented by one team.

SOC integration

SASE deployments can connect to evoila’s 24/7 SOC. Monitoring and response are built in by design, not an afterthought.

ISO 27001 certified

evoila holds ISO 27001 certification. Security practice is documented, audited and verifiable.

Technologies & Partners

Fortinet SASE, backed by our SOC

evoila delivers SASE and zero trust network access with Fortinet, covering FortiSASE, ZTNA, SD-WAN and network segmentation, including operational technology environments. This network layer integrates with our identity-based zero trust architecture on Microsoft Entra and with private cloud segmentation in the data centre. SASE deployments can connect to evoila’s SOC for monitoring and response.


Services & Starter Deals

Start the way that works best for you

1 | SASE Readiness Assessment

A fixed-scope assessment of your users, sites, applications and traffic flows. We identify the right starting point for ZTNA, SD-WAN and secure internet access.

2 | ZTNA Pilot

Start with a defined user group or application. Prove secure, identity-aware access without disrupting connectivity, then expand at your own pace.

Secure every connection.

Verify every access. Secure every site and connection. Start where the risk is highest.

Book a SASE assessment

Zero Trust in Your Network. Full Trust in Your Partner.

We design the architecture, deploy the stack, and operate the edge. You trust the network less. You trust us more.

FAQs

Commonly Asked Questions about SASE & Zero Trust Network Access