Azure Policy–Restrict NICs From Connecting to Particular Subnets

I wrote this policy definition for a customer few weeks ago – to restrict VMs from connecting to particular subnets. The customer has several subnets that should not be used by VMs, i.e. dedicated subnet for Azure ADDS (which is not associated to any NSGs), or subnets that are using different NSGs, which normal users should not be using. Since the intension is not restricting users from using the entire VNet, but only particular subnets, we could not apply such restrictions using custom role definitions. Here’s the policy definition:

It is also located in my GitHub repo: From

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Azure Policy Definition – Restricting Public IP for NIC

It has been a while since my last blog post. There were a lot going on outside of work, I couldn’t find time to write, and my blog to-do list is getting longer. Finally things are settled down a little bit. I will try to tackle my list in the coming days. To get started, I will target the easiest ones first. Few weeks ago, I had to write several custom Azure Policy definitions for a customer. One of them is to restrict Public IPs being provisioned for VMs in particular resource groups. I found a similar definition from the

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