Microsegmentation stops the lateral movement of attacks and ransomware, with full visibility and least-privilege rules down to the workload level. KAEMI designs, implements and manages the segmentation as a managed service.
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Classic perimeter security only protects the outer boundary. Once an attacker is inside the network, they often move unhindered from system to system in flat networks, and this is exactly how ransomware spreads, too. Microsegmentation closes this gap and controls the traffic between individual applications and workloads down to the finest level.
A permeable network becomes an environment built on the Zero Trust principle: only what an application genuinely needs is allowed. A single compromised system no longer turns into a company-wide incident. Regulation is pushing the topic as well: DORA requires financial institutions to limit the impact of ICT incidents, NIS2 extends the requirements to further sectors, and clean segmentation shrinks the PCI DSS audit scope. KAEMI plans and manages microsegmentation aligned to your requirements, from visibility through policies to consistent enforcement.
GET IN TOUCHAll Illumio products for microsegmentation at a glanceBefore anything is segmented, a real-time map of all communication relationships between applications, servers and workloads is created, across data centre, cloud and endpoints. Only this transparency makes risks and unnecessarily open connections visible.
Microsegmentation prevents the sideways movement of attackers and ransomware. If a system is compromised, the damage stays confined to that one system instead of spreading across the entire network.
The rules are enforced directly on the workloads, via the operating system's built-in firewall. No new appliances are needed and there is no intervention in VLANs or subnets. The existing network remains untouched.
Instead of unwieldy IP and firewall rules, allow lists are created based on labels such as application, environment or location. Only the necessary traffic is permitted. Everything else is blocked.
If a workload moves or an application scales, the security policy automatically moves with it. Protection stays consistent at all times, even in dynamic cloud and container environments.
Particularly sensitive applications are shielded specifically, and risky ports such as RDP or SMB can be closed organisation-wide. This reduces the attack surface immediately: a fast, measurable security gain.
New segmentation rules initially run in observation mode only: their effect is simulated and reviewed before they are switched live. This prevents outages caused by overly strict rules.
Known vulnerabilities are overlaid directly onto the communication map. It becomes visible which vulnerable services are actually reachable, and where segmentation reduces risk the most.
In an emergency, affected systems or entire areas can be isolated in just a few steps. The spread is stopped immediately while the investigation is still under way.
How companies introduced this service with KAEMI and what came out of it. The customers remain unnamed; the projects are real.
Insurance
Servers, terminal servers and Kubernetes in one segmentation model: from the first dependency map through the rollout to the handover to the internal team.
Case study: insuranceHospital group
More than 2,000 servers, terminal server farms and central load balancers, introduced without interrupting patient care. Section 75c SGB V and the KHZG set the frame. From monitoring mode to full enforcement — with visibility into every east-west connection between systems.
Case study: hospital group
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Seit Januar 2025 gilt DORA verbindlich für den europäischen Finanzsektor. Der Überblick: die fünf Säulen der Verordnung, Meldefristen und TLPT, wer alles betroffen ist und warum Zero-Trust-Segmentierung eines der wirksamsten Werkzeuge für echte operationale Resilienz ist.
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Lateral movement describes how attackers move on from the first compromised system to others, looking for privileges, data and worthwhile targets. This east-west traffic goes unobserved in many networks. Microsegmentation limits exactly these paths: each workload only reaches what a rule explicitly allows.
Microsegmentation is a Zero Trust approach that controls the communication between individual workloads down to the application level. Instead of opening up entire network segments, it only allows explicitly required connections, following the least-privilege principle. This effectively contains the lateral movement of attacks and ransomware in the data centre and in the cloud.
First, all communication is made visible so you can see which workloads actually talk to each other. On this basis we define least-privilege rules that are enforced host-based, without redesigning the network. Critical applications can be ring-fenced. If an attacker breaks in, they no longer find open paths to further systems.
Microsegmentation reduces your attack surface and limits the damage should something happen after all. You gain full visibility of communication, assess vulnerabilities in the context of their actual reachability and prioritise accordingly. In the event of an attack, containment helps isolate affected systems quickly, without shutting down live applications and systems entirely.
Classic segmentation separates networks via VLANs and firewalls at the level of entire zones and often requires changes to the infrastructure. Microsegmentation enforces policies host-based, directly on the workload, without network redesign. The rule follows the workload, even when it moves, and applies granularly down to individual applications and services.
As a managed security service provider, KAEMI plans, implements and manages your microsegmentation, aligned to your requirements. We first establish visibility of communication, design least-privilege policies and test them before enforcement to avoid disruptions. As Illumio EMEA Partner of the Year, we bring proven expertise in this field.
Microsegmentation suits organisations that want to protect critical applications and prevent the lateral movement of ransomware, for example in data centres, hybrid environments and the cloud. It is particularly worthwhile if you want granular control and full visibility of workload communication without an elaborate network redesign.
Yes, it provides a concrete technical building block for several regulations. DORA requires financial institutions to limit the impact of ICT incidents; that is exactly what containment at the workload level delivers. NIS2 and ISO 27001 call for risk-based measures for network security and access control. For card payments, clean segmentation isolates the cardholder data environment and shrinks the PCI DSS audit scope. Typical scenarios range from ringfencing payment systems in banking to separating patient data and medical devices to isolating production systems in manufacturing. The resulting visibility also makes evidence and audits easier.
With a proper implementation, barely at all. Policies are enforced directly at the workload through the filtering capabilities the operating system already provides; no additional hardware sits in the data path, and the agent itself needs few resources. What matters is testing before enforcement: monitoring mode shows whether legitimate connections would be affected before a rule goes live.
No. Zero Trust is the overarching strategy: no user, device or workload is trusted by default, and every access must be verified. Microsegmentation is the building block that enforces this principle in the communication between workloads and limits lateral movement. A complete Zero Trust architecture also covers identity and user access, which KAEMI implements with SASE/SSE. For the complete Zero Trust implementation — identity, access and segmentation — KAEMI supports you from architecture to operations.