network security groups

Troubleshoot Networking in Microsoft Azure

Everything can be found with Wireshark! I was recently involved in a scenario where I was tasked at troubleshooting why some features were not working in Azure, related to traffic flow between a service in Azure and virtual machine on-premises. For those that are used to “Cisco” troubleshooting or network troubleshooting, moving that knowledge to Azure …

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24 hours of network traffic analysis from Microsoft Azure

Did you know that your virtual machines are targeted for attacks before they actually come online? For virtual machines running on Microsoft Azure, you can notice quite fast when they are online and ports like 3389 / RDP is publically available you get a lot of failed authentication attempts quite fast, flooding with random username and …

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AzureStack breakdown of Distributed Firewall

Following up on the previous AzureStack blogpost (Software load balancing –> http://msandbu.org/azurestack-breakdown-of-load-balancing-component/) I wanted to continue on the firewall component, which is also a new component which is now part of Windows Server 2016 as well. The solution in place in AzureStack is the same one that is available in Azure aka (Network Security Groups) …

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