Thoughts from the clouds
Welcome to the second post in the Private Link Reality Bites series! Before we begin, let me recap the existing episodes of the series: In this post I am going to explore something that silently has started to work in a different way as it used to: routing in the GatewaySubnet, or how to send … Continue reading Private Link reality bites – Your routes might be lying
Welcome to this new series of blog posts in which I will be explaining some not-so-well-known facts about Azure Private Link and some associated technologies! This idea is born from the fact that I have been helping some colleagues and customers lately with some questions around Private Link, and that has made me realize that … Continue reading Private Link reality bites – Private endpoints are an illusion
In Azure you have two main ways of managing your virtual network connectivity: self-managed hub-and-spoke and Virtual WAN. Virtual WAN is a solution where Microsoft manages part of your virtual networks for you, and in exchange it gives you some benefits such as any-to-any routing out of the box. However, what if you need that … Continue reading Interregional traffic in hub-and-spoke
If you are working with Azure, you will probably have some logs or data stored in a repository such as Azure Data Explorer or Log Analytics. Kusto Query Language (KQL) is what you use to extract information from these repositories. KQL is similar to SQL in that it allows you a rich set of operations … Continue reading Power Automate and KQL integration
This one is going to be quick. The question is the following: if you have an Network Security Group rule in Azure that matches any protocol, but a specific TCP or UDP port number, what is the effect? Would protocols such as ICMP be matched as well? To verify this I have this NSG: If … Continue reading NSG: any protocol, specific port?
The square design in ExpressRoute is not a recommended practice, but it can mean savings in ExpressRoute costs of up to 90%.
First of all, my apologies for the radio silence, there have been some private projects going on during the Summer months that have kept me away from blogging. With that out of the way: what the heck is subnet peering? You probably know VNet peering, but is “subnet peering” now a thing? Well, not yet, … Continue reading Azure Subnet Peering
Disclaimer: this post is going to be quite geeky. So this is not the kind of post you want to read if you don’t need this stuff. But hey, I needed to tell someone after getting this to work, plus this might be useful for somebody else, since I struggled to find these details out … Continue reading Simulating VPN sites in Azure with Ubuntu 24.04 and StrongSwan
You might have heard about VNet Flow Logs, I posted about this new Azure feature here. One of the applications of VNet Flow Logs is to gain visibility into traffic in places that had been blind spots until now, such as in the Gateway Subnets to inspect traffic on VPN or ExpressRoute. Talking about ExpressRoute, … Continue reading ExpressRoute traffic visibility: Flow Logs or Traffic Collector?
You might have heard about the General Availability of Virtual Network Flow Logs in Azure, and even read the announcement blog post. When writing that post with Harsha CS I had the chance to play a bit with VNet Flow Logs and Traffic Analytics, and I would like to share some of the learnings. What … Continue reading VNet Flow Logs recipes
Cloudtrooper 