ISO 27001: 2022 - Control 8.22 Segregation Of Networks

by Poorva Dange


Segregation of networks control is a crucial aspect of information security management, particularly in the context of ISO 27001:2022. As organizations increasingly rely on interconnected networks to store and transmit sensitive data, the need to implement effective measures to prevent unauthorized access and data breaches has become more important than ever. ISO 27001:2022 is the latest version of the internationally recognized standard for information security management systems (ISMS). It provides a comprehensive framework for organizations to establish, implement, maintain, and continually improve their information security processes. One of the key controls outlined in this standard is control 8.22, which specifically addresses the segregation of networks.

ISO 27001: 2022 - Controls - 8.22 Segregation Of Networks

Implementing Network Control Measures

The implementation of network control measures is crucial for organizations to ensure the security and integrity of their information assets. With the release of ISO 27001:2022, organizations are now required to adhere to more stringent control measures to protect their networks from cyber threats.

Here are the key points to consider when implementing network control measures in accordance with ISO 27001:2022:

  1. Risk Assessment: Before implementing any network control measures, organizations must conduct a thorough risk assessment to identify potential vulnerabilities and threats to their network. This will help in determining the appropriate controls to be put in place.
  1. Access Control: Controlling access to the network is essential to prevent unauthorized users from gaining access to sensitive information. Organizations should implement strong authentication mechanisms, such as multi-factor authentication, to ensure only authorized personnel can access the network.
  1. Network Segmentation: Segmenting the network into different zones based on the level of sensitivity of the information being stored or processed is an effective way to limit the impact of a potential breach. This also helps in containing the spread of malware or unauthorized access.
  1. Monitoring And Logging: Continuous monitoring of network traffic and logging of events are crucial for detecting and responding to potential security incidents in a timely manner. Organizations should implement security information and event management (SIEM) systems to monitor and analyze network activity.
  1. Encryption: Encrypting sensitive data in transit and at rest is essential to protect it from unauthorized access. Organizations should implement strong encryption algorithms and key management practices to ensure the confidentiality and integrity of their data.
  1. Patch Management: Regularly applying security patches to network devices and software is crucial to address known vulnerabilities and prevent potential cyber attacks. Organizations should have a well-defined patch management process in place to ensure timely updates.

Risk Assessment And Management In Network Segregation

Network segregation plays a critical role in protecting organizational assets from cyber threats. Network segregation refers to the practice of dividing a network into smaller subnetworks to control and manage access to sensitive data and resources. In order to effectively implement network segregation, it is crucial for organizations to conduct a thorough risk assessment and develop a comprehensive risk management strategy.

Risk assessment is the process of identifying, analyzing, and evaluating potential risks that could impact the security and integrity of an organization's network. This involves identifying potential threats, vulnerabilities, and the likelihood of these risks occurring. By conducting a risk assessment, organizations can better understand their network infrastructure and identify areas that require additional security measures.

Once the risks have been identified, it is essential for organizations to develop a risk management strategy to address and mitigate these risks. This involves implementing security controls, policies, and procedures to protect the network from potential threats. Some common risk management strategies include implementing firewalls, intrusion detection systems, access controls, and encryption protocols.

In the context of network segregation, organizations can divide their network into separate segments based on different security requirements. For example, a company may have a separate network segment for guest Wi-Fi access, employee data, and sensitive corporate information. By segregating the network, organizations can limit the impact of a potential security breach and prevent unauthorized access to critical assets.

ISO 27001:2022

Monitoring And Reviewing Network Segregation

Network segregation is a critical component of maintaining a secure IT environment, especially in the context of ISO 27001 2022 requirements. In this article, we will explore the importance of monitoring and reviewing network segregation controls in the ISO 27001 framework.

  1. Regular Audits: One of the key points in monitoring network segregation controls is conducting regular audits. Audits help in identifying any gaps or weaknesses in the network segregation controls and ensuring compliance with ISO 27001 standards.
  1. Compliance Monitoring: It is essential to continuously monitor the network segregation controls to ensure that they are in line with the ISO 27001 requirements. This includes monitoring access controls, network boundaries, and data segregation to prevent unauthorized access.
  1. Incident Response: Monitoring network segregation controls also involves having an incident response plan in place. In the event of a security breach or unauthorized access, organizations should be able to quickly respond and mitigate the impact on network segregation.
  1. Review and Update Policies: Regularly reviewing and updating network segregation policies is crucial to adapting to new threats and maintaining compliance with ISO 27001 standards. This includes revising access control lists, reviewing network configurations, and updating firewall rules.
  1. Training and Awareness: Employee training and awareness play a significant role in effective network segregation control. Ensuring that employees are aware of the importance of network segregation and the consequences of non-compliance can help in maintaining a secure IT environment

Compliance With ISO 27001:2022 Standards

ISO 27001:2022 is the latest version of the international standard for information security management systems. It provides a framework for organizations to manage and protect their information assets, ensuring they are secure and compliant with regulatory requirements.

Compliance with ISO 27001:2022 standards is crucial for organizations looking to protect their data, reduce security risks, and maintain customer trust. By following the requirements outlined in the standard, companies can establish, implement, maintain, and continually improve an information security management system.

One of the key aspects of compliance with ISO 27001:2022 standards is conducting a risk assessment to identify potential threats and vulnerabilities to information assets. This allows organizations to prioritize their security measures and allocate resources effectively to address the most significant risks.

Another important element of compliance is establishing policies and procedures to manage information security risks. This includes defining roles and responsibilities, setting security objectives, and implementing controls to mitigate risks and achieve compliance with the standard.

Compliance with ISO 27001:2022 standards can provide several benefits for organizations, including improved security posture, increased trust from customers and stakeholders, and enhanced compliance with regulatory requirements. By following the requirements outlined in the standard, companies can demonstrate their commitment to protecting sensitive information and maintaining a secure environment for their data.


Implementing proper segregation of networks control is crucial for ensuring the security and integrity of information in accordance with the ISO 27001:2022 standards. By effectively segregating networks, organizations can minimize the risk of unauthorized access and data breaches. It is essential for businesses to carefully implement and maintain this control to protect sensitive information and maintain compliance with regulatory requirements.

ISO 27001:2022