Tag: Firewall

Migrating Azure Firewall To Availability Zones

Microsoft recently added support for availability zones to Azure firewall in regions that offer this higher level of SLA. In this post, I will explain how you can convert an existing Azure Firewall to availability zones. Before We Proceed There are two things you need to understand: If you have already deployed and configured Azure…

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Backing Up Azure Firewall

In this post, I will outline how you can back up your Azure Firewall, enabling you to rebuild it in case it is accidentally/maliciously deleted or re-configured by an authorized person. With the Azure Firewall adding new features, we should expect more customers to start using it. And if you are using it like I…

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How to Troubleshoot Azure Routing?

This post will explain how routing works in Microsoft Azure, and how to troubleshoot your routing issues with Route Tables, BGP, and User-Defined Routes in your virtual network (VNet) subnets and virtual (firewall) appliances/Azure Firewall. Software-Defined Networking Right now, you need to forget VLANs, and how routers, bridges, routing switches, and all that crap works…

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Why Choose the Azure Firewall over a Virtual Firewall Appliance?

In this post, I will explain why you should choose Azure Firewall over third-party firewall network virtual appliances (NVAs) from the likes of Cisco, Palo Alto, Check Point, and so on. Microsoft’s Opinion Microsoft has a partner-friendly line on Azure Firewall versus third-parties. Microsoft says that third-party solutions offer more than Azure Firewall. If you…

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Azure-to-Azure Site Recovery Fails – Connection Cannot Be Established

In this post, I’ll explain how to fix the following errors when you attempt to replicate an Azure virtual machine from one Azure Region to another: Error 151072: Connection cannot be established to Azure Site Recovery service endpoints. And: Error 539: The requested action couldn’t be performed by the ‘A2A’ Replication Provider. The Cause A2ASR…

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