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DNS security based on zero trust model for enhanced protection.

# Microsoft Develops Zero-Trust DNS Protocol

Microsoft is currently working on a groundbreaking protocol known as Zero-Trust DNS (ZTDNS) that aims to enhance the security of DNS by integrating the Windows DNS engine with the Windows Filtering Platform. This integration allows for updates to be made to the Windows firewall on a per-domain name basis, enabling organizations to restrict client devices to only use their designated DNS server that employs TLS encryption and resolves specific domains.

According to Jake Williams, VP of research and development at consultancy Hunter Strategy, the protective DNS server, as referred to by Microsoft, will deny resolutions to all domains except those listed in allow lists. Additionally, a separate allow list will contain IP address subnets necessary for clients to run authorized software. This innovative approach provides organizations with a scalable solution to manage rapidly changing security needs within their network infrastructure.

Networking security expert Royce Williams highlighted the bidirectional API functionality of the firewall layer, enabling external actions to be triggered based on firewall state. This eliminates the need for third-party vendors to reinvent the firewall wheel, as they can seamlessly integrate their solutions with the Windows Filtering Platform. Ultimately, the Zero-Trust DNS protocol offers a comprehensive security mechanism that empowers organizations to enforce strict DNS policies and enhance overall network protection.

## Key Points:
– Microsoft is developing the Zero-Trust DNS protocol to enhance DNS security by integrating the Windows DNS engine with the Windows Filtering Platform.
– The protocol allows for updates to the Windows firewall on a per-domain name basis, enabling organizations to control client devices’ DNS usage and restrict domain resolutions.
– Zero-Trust DNS features a protective DNS server that enforces strict allow lists for domain resolutions and IP address subnets for authorized software.
– The bidirectional API functionality of the firewall layer enables seamless integration with external actions, providing a scalable solution for organizations with evolving security needs.
– This innovative protocol offers a comprehensive security mechanism to enhance network protection and enforce strict DNS policies within organizations.

In conclusion, Microsoft’s development of the Zero-Trust DNS protocol represents a significant advancement in DNS security, offering organizations the ability to implement strict DNS policies and enhance network protection. By integrating the Windows DNS engine with the Windows Filtering Platform, this protocol provides a scalable solution for managing evolving security needs and enforcing domain-specific firewall rules. With the potential to revolutionize DNS security, Zero-Trust DNS is poised to become a key tool in safeguarding network infrastructure against evolving cyber threats.

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