Network Security

Secure Your Internal Network

Most networks are flat — one breach and an attacker can reach everything. We redesign your internal network with VLANs and segmentation built to industry standards, so corporate, guest, IoT and server traffic are separated and tightly controlled.

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Overview

Stop one breach becoming a whole-network breach

Many business networks are “flat” — every device sits on the same range and can see every other device. It’s convenient, but it means a single compromised laptop, IoT gadget or guest device can reach your servers, cameras, tills and management systems. Network segmentation fixes that. We design and build a set of VLANs (virtual LANs) that split your network into secure zones, each with its own rules about what it can and can’t talk to — following industry best practice and the principles behind Cyber Essentials and ISO 27001. The result is a network where a problem in one zone stays in that zone.

What’s included

A segmented network, built to standards

Corporate network — a protected zone for staff devices and business systems
Guest locked network — internet-only access, fully isolated from internal systems and other guests
Segregated IoT devices — cameras, sensors, printers and smart devices on their own VLAN so they can’t be used as a way in
Server & data zone with outbound upload blocking — stops servers pushing or exfiltrating files out to the internet
Restricted internal services — control which zones can reach which services (e.g. only IT reaches management interfaces)
Least-privilege firewall rules — traffic between zones is denied by default and allowed only where justified
Voice / telephony VLAN — separated and prioritised for call quality, where relevant
Documented design — a clear network map and rule set that you own
Built to industry standards — aligned to recognised segmentation best practice and compliance frameworks

Pricing

Project pricing that fits your network

Every network is different, so segmentation is scoped and priced to yours — sites, switches, VLANs and devices.

A one-off project — including design, implementation and documentation. Drag to see an indicative price for the size of your network.

Single site
Single siteMediumMulti-site
Indicative project priceFrom £1,500

One location with the core zones — corporate, guest, IoT and servers.

What affects the price: number of sites, switches and VLANs, and the number of devices involved
Any hardware needed (managed switches or a capable firewall) is quoted separately if your current kit doesn’t support segmentation
Ongoing management is available as part of a managed IT support agreement

Prices are a guide, correct at the time of publication (July 2026), exclude VAT and are subject to change. Ask us for a scoped, fixed quote for your network.

Better together

The foundation of a secure network

Segmentation is the groundwork — it makes every other security control more effective.

A well-segmented network contains threats, but it works best alongside the rest of your defences: an Always-On VPN for secure remote access, vulnerability scanning to find weaknesses across the estate, and 24/7 monitoring to catch anything that does get in. Together they turn a flat, open network into a layered, defensible one.

Deny by defaultLeast-privilege rules
IoTIsolated & contained
GuestInternet-only, locked down
CE / ISOStandards-aligned

Related

Works hand-in-hand with

Secure Remote Working

Secure, automatic remote access for your hybrid team.

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Vulnerability Management

Continuous scanning of your devices and network — £35 per asset per month.

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Cyber Security

Our full Cyber Resilience Programme — SOC, monitoring, testing and compliance.

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FAQs

Network segmentation questions, answered.

Splitting your network into separate, walled-off zones (VLANs) instead of one big flat network, so devices only reach what they genuinely need to. If one zone is compromised, the problem is contained rather than spreading everywhere.
A VLAN (Virtual Local Area Network) is a way of logically separating one physical network into several isolated networks. Devices on different VLANs can’t talk to each other unless a firewall rule specifically allows it.
On a flat network every device can see every other device. A single infected laptop, a compromised IoT camera or a guest’s phone can then reach your servers, cameras and management systems. Segmentation removes those open paths.
Typically a corporate zone for staff and business systems, a locked-down guest network, a segregated IoT/devices zone, a protected server and data zone, and often a separate voice/telephony zone — all tailored to your environment.
Yes. We can apply outbound rules that stop servers initiating file uploads to the internet, so a compromised server can’t be used to quietly exfiltrate your data. Legitimate, approved destinations are allowed by exception.
Cameras, sensors, printers, door-entry and other smart devices are placed on their own segregated VLAN with tightly controlled access. They can still do their job, but can’t be used as a stepping stone into your corporate systems.
Guests get internet access only, on a fully isolated network. They can’t see your internal systems — or each other — so visitor access stays convenient but harmless.
Yes, where it’s justified. We use least-privilege firewall rules so only the specific, necessary traffic is allowed between zones — everything else is denied by default.
We plan the cut-over carefully, usually staging changes and switching over out of hours or in phases, to keep disruption to a minimum.
It depends on your current kit. Segmentation needs managed switches and a capable firewall. If yours support it, we’ll use what you have; if not, we’ll quote for the necessary equipment as part of the project.
Yes. Segmentation is a recognised security control and supports the network-security and access-control expectations of Cyber Essentials, ISO 27001 and frameworks such as the NHS DSPT.
As a one-off project, scoped to the size and complexity of your network — the number of sites, switches, VLANs and devices involved. Projects start from £1,500, excluding VAT.
A single-site project is often completed within a few days of planning and implementation; larger or multi-site networks take longer. We’ll give you a clear timeline when we scope the work.
Yes. We can monitor and maintain the segmented network as part of a managed IT support agreement, including any future changes to rules or zones.
Very much so — separating curriculum, admin, guest and IoT traffic, or clinical versus corporate systems, is exactly the kind of control these sectors need, and something we do regularly.

Turn your flat network into a defensible one

Get a scoped network segmentation quote for your business — no obligation.

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