How Many Subnets Do I Need In An Azure Virtual Network?
Explains why traditional subnet logic doesn't apply in Azure and how to design secure network segmentation using NSGs instead.
Aidan Finn is a Microsoft Azure MVP with nearly three decades of experience in IT, specializing in Microsoft infrastructure, cloud architecture, and secure Azure solutions. Through his company Cloud Mechanix, he delivers real-world training and consulting based on hands-on experience, and regularly shares independent, opinionated insights with the global Microsoft community.
30 articles from this blog
Explains why traditional subnet logic doesn't apply in Azure and how to design secure network segmentation using NSGs instead.
Explains a critical security misconception in Azure Network Security Groups: the 'VirtualNetwork' default rule allows traffic from more sources than expected, creating a vulnerability.
Explains how Azure Network Security Groups (NSGs) work, tracing their origins to Hyper-V Port ACLs and covering Admin Rules.
Explores Azure's disaster recovery features for when an entire region is destroyed, covering availability zones, paired regions, and resilience strategies.
Explains how Azure's software-defined networking abstracts physical infrastructure, making virtual networks a conceptual layer rather than physical entities.
Analyzes how potential geopolitical conflicts in the Nordic/Baltic region could impact critical Azure cloud infrastructure and data centers.
Guide to migrating an existing Azure Firewall to Firewall Policy management using Bicep for improved features and infrastructure-as-code control.
Troubleshooting guide for Azure Image Builder job failures due to TCP port 60000, 5986, or 22 errors in a secure network setup.
A tech professional shares their recent speaking engagements at IT conferences, focusing on Azure networking, firewalls, and migration topics.
A guide on using Azure Virtual Network Manager to centrally govern and manage large-scale Azure virtual networks, including connectivity, security, and routing.