Combining Azure Firewall and Flow Log analysis

As you might already know, there are a couple of ways of filtering traffic in Azure Virtual Networks: Network Security Groups (NSGs) and Azure Firewall. NSGs offer unlimited performance for Layer 4 filtering, while Azure Firewall is more powerful with features like deep packet inspection or application-level intelligence. However, even if these solutions follow a … Continue reading Combining Azure Firewall and Flow Log analysis

Importing Palo Alto policies to Azure Firewall

I recently had a project where we had the chance to convert a Palo Alto ruleset to an Azure Firewall Policy. I had recently created a script to generate a Firewall Policy for Microsoft 365 endpoints, so the challenge was using that work as a basis to generate an Azure Firewall Policy out of the … Continue reading Importing Palo Alto policies to Azure Firewall

Azure Firewall rules for Office 365

This post is going to be a bit different than the rest, because I have no complex network designs with many boxes and IP addresses. Instead, I have been confronted with a different challenge: how can you configure Azure Firewall to allow traffic to Office 365 endpoints? Why would you want to do that? There … Continue reading Azure Firewall rules for Office 365

Azure Firewall’s sidekick to join the BGP superheroes

Azure Firewall is a fantastic product: oversimplifying, an architecture that scales out great, provides traffic forwarding and security in Azure, and is very easy to integrate in a network. Some times you need to manipulate the default routing of Azure VNets, and Azure Route Server offers an invaluable tool for that. However, Azure Route Server … Continue reading Azure Firewall’s sidekick to join the BGP superheroes

Virtual WAN: secure hubs in multiple regions

You probably know Azure Virtual WAN, an Azure technology that abstracts hybrid networking by providing Microsoft-managed Virtual Hubs that use the Microsoft backbone to talk to each other. And you might know as well that those hubs can become Secured Virtual Hubs, including firewalling functionality powered by Azure Firewall. Virtual WAN secure hubs are great, … Continue reading Virtual WAN: secure hubs in multiple regions

Filtering traffic to Private Endpoints with Azure Firewall

If you are reading this, you probably already know what Azure Private Link is: a representation of a service such as Azure Storage, Azure SQL Database, Azure Application Service, or even some application running in a different Virtual Network, in your own Virtual Network with a private IP address of your own. This is a … Continue reading Filtering traffic to Private Endpoints with Azure Firewall