2026-07-17

Azure Network Security Groups - Simply Explained

Azure Network Security Groups (NSGs) are one of the most important security features in Microsoft Azure, allowing you to control inbound and outbound network traffic for virtual machines, subnets, and other Azure resources. By defining security rules based on IP addresses, ports, and protocols, NSGs help protect workloads from unauthorized access while ensuring legitimate traffic can flow where it's needed. In this episode of Microsoft Knowledge Nuggets, Mirko Peters explains Azure Network Security Groups in simple terms and shows why NSGs are a fundamental building block of every secure Azure environment. You'll learn how NSGs work, how traffic is evaluated, and how they help enforce network security without requiring additional infrastructure. The episode covers key concepts including inbound and outbound rules, priorities, service tags, application security groups (ASGs), default secu

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Azure Network Security Groups - Simply Explained (English)