8 posts tagged with "Networking"
If Azure WAF is blocking legitimate traffic after a policy update, new deployment, or rule set upgrade, false positives are the most common cause. This guide walks through 7 diagnostic phases to identify, reproduce, and safely exclude the offending rule — without disabling WAF protection.
If your VPN Gateway CPU is above 85% while traffic volume looks normal, BGP route bloat is almost certainly the cause. This guide covers the exact commands to diagnose it, route summarization on the CE router, an Azure-side prefix filter for defense in depth, and when to upgrade the gateway SKU.
If some pods in your AKS cluster resolve external DNS names fine and others fail — from the same Deployment, same image, same config — the variable is the node. This guide covers the exact test sequence to isolate CoreDNS upstream forwarding failures, identify /etc/resolv.conf drift on worker nodes, and fix it without reprovisioning.
If your Azure OpenAI calls fail after adding a private endpoint — with timeouts, 401s, or connections that bypass the endpoint entirely — the cause is almost always in one of four places: DNS resolution, App Service VNet routing, NSG subnet policies, or SDK endpoint configuration. Here is how to diagnose and fix each one.
Learn how to diagnose and mitigate SNAT port exhaustion issues in Azure Firewall.
Step-by-step guide for diagnosing and resolving Azure Firewall SNAT and traffic flow issues.
How to detect and resolve high CPU issues on Azure Virtual Network Gateways
