How can zoning be used for network segmentation?
In today’s connected world, no system is stronger than its weakest link, and no critical information or system is secure if there is insufficient protection. Learn more about how zoning can be used for network segmentation in
this article.
Introduction to network segmentation
A cyberattack can result in sensitive and/or critical systems being disrupted, knocked out or leaking information. The most critical systems, or the most sensitive information, must be protected with high-assurance security solutions in order to obtain a high level of security.
We have defined 5 steps for network segmentation using zoning, and hope that these can guide you and help create a successful project.
5 steps for network segmentation
1. Create a zone model
To structure the segmentation project using zoning, you should create a zone model that defines what types of zones you have and what security and assurance requirements you have for the security functions that separate the zones.
2. Define what should be segmented
Define which system or systems that should be segmented and should thereby be included in the segmentation project. It is very important that the scope of the project is clearly defined and well communicated to everyone involved.
3. Perform a security analysis of systems
The systems included in the segmentation project need to be classified according to its sensitivity and criticality. The classification should be performed on an ongoing basis by the organisation, but a security analysis can identify systems and information that have not been classified.
4. Arrange the systems according to the zone model
Place the systems according to the zone model. Placement is based on requirements for security, availability, functionality and operational responsibility. Understanding how the different systems communicate with each other at network level is central.
5. Implement, test and put into operation
In order for the segmentation project to go from paper product to reality, various components (applications, firewalls, switches, etc.) will need to be reconfigured and in some cases networks will have to be partially rebuilt. The various security solutions will be configured, tested and put into operation.
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FAQ
What is network segmentation?
Network segmentation means dividing a data network into smaller subnetworks, or segments. This helps increase security by limiting access and containing potential threats, and can also improve overall network performance.
What are the benefits of network segmentation?
Network segmentation helps organizations strengthen their cybersecurity by reducing risk and limiting the impact of cyberattacks. Without it, there is a risk that sensitive information can leak or be manipulated, and that malware and ransomware can spread uncontrollably and quickly.
Who needs to work with network segmentation?
Organisations that handle sensitive information, such as those in defence, authorities, infrastructure, and industry.
Why do you need to protect your information?
Availability: So that the Information is accessible whenever it is needed.
Integrity: So that we can trust that the information is correct and has not been tampered with, altered, or destroyed by unauthorized parties.
Confidentiality: So that authorised persons may take part in it.
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