Marcin Gastol • 8/12/2025

Securing Azure Private DNS with Azure Firewall and NSGs

This article explains how to secure Azure Private DNS traffic by combining Azure Firewall and Network Security Groups (NSGs). It highlights common risks like unrestricted DNS queries, data exfiltration, and malware communication. The guide provides step-by-step PowerShell scripts to enable DNS Proxy on Azure Firewall, create firewall rules for DNS, and configure NSGs to restrict DNS access. It is aimed at IT professionals managing enterprise-scale Azure environments, emphasizing centralized DNS resolution, monitoring, and Infrastructure-as-Code practices.

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#Powershell #Azure Firewall #DNS Security