visual guide

Author: brown9804

3_networking/firewall/README.md

@@ -15,9 +15,11 @@ Last updated: 2025-06-12
 > The subnet used for Azure Firewall **must** be named `AzureFirewallSubnet` and sized at least /26.
 
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 ## File Descriptions
 
 - **main.tf**: Contains the main configuration for creating the Azure Firewall and its supporting resources.