Control Requirement 5.7.3.3: Activating Software Firewalls for Enhanced Device Security
Protecting individual devices within an organization’s network is just as important as securing the network itself. Control requirement 5.7.3.3 from the CAN/DGSI 104:2021 Rev 1 2024 standard emphasizes the need to activate software firewalls on devices. This practice is essential for maintaining the security and integrity of your network and its endpoints.
Why Activating Software Firewalls Matters
Software firewalls play a crucial role in device security for several reasons:
Threat Prevention: They help prevent unauthorized access and block malicious traffic from reaching the device.
Traffic Filtering: Software firewalls filter incoming and outgoing traffic based on security rules, ensuring that only legitimate traffic is allowed.
Monitoring and Logging: They provide logs of network activity on the device, helping you monitor and analyze traffic patterns to identify suspicious activities.
Compliance: Activating software firewalls helps meet regulatory requirements and adhere to industry standards for data protection and device security.
Implementing Software Firewalls on Devices
To effectively implement software firewalls on devices, follow these steps:
Assessment: Evaluate the devices within your network and identify those that require software firewalls. Determine the types of traffic that need to be controlled.
Activation: Activate the software firewalls included on the devices. Ensure that they are configured with appropriate security rules and policies that align with your security objectives and compliance requirements.
Configuration: Configure the software firewalls to filter traffic based on security rules. Specify and identify the open ports inbound and outbound, and review the business rationale for opening them. Minimize the number of “Allow” rules and ensure the “Default” rule is set to “Deny.”
Monitoring: Continuously monitor the performance of the software firewalls and the traffic on the devices. Regularly review and update the security rules to adapt to emerging threats and changes in the network environment.
Documentation: Maintain detailed documentation of the software firewall configuration, security rules, and monitoring procedures for future audits and security assessments.
Policy and Enforcement
Organizations must have a clear policy outlining the requirements for activating software firewalls. This policy must include:
Scope: Define the devices that require software firewalls and the types of traffic that need to be controlled.
Configuration Guidelines: Provide detailed instructions for activating and configuring software firewalls, including security rules and policies.
Monitoring and Maintenance: Outline the procedures for monitoring software firewall performance and updating security rules.
Enforcement: Specify the consequences for failing to adhere to the policy, which may include disciplinary action.
Conclusion
Activating software firewalls on devices is a vital control requirement from the CAN/DGSI 104:2021 Rev 1 2024 standard that enhances an organization’s device security. By following a structured procedure and adhering to a clear policy, organizations can safeguard their data and systems, ensuring business continuity and compliance with industry standards. Contact us today to get CAN/DGSI 104:2021 Rev 1 2024 certified!