Up to now, we have been discussing how to manage security in Linux. Since we are deploying in Azure, Azure also provides some added security to our Linux VMs. For example, earlier, we discussed Azure Firewall and network security groups, which help in controlling traffic, limiting access to unwanted ports, and filtering traffic originating from unknown locations. On top of this, there are other services in Azure, such as Azure AD Domain Services, which will let you join a Linux VM to a domain. Recently, Microsoft launched an option by which Azure AD users can sign in to the Linux VM. The advantage of this is that you don't have to use other usernames; instead, you can use Azure AD credentials. Let's take a closer look at these services and understand how we can make use of them to increase the security of our Linux VMs.

Azure AD Domain Services

Until now, we have been discussing what can be done inside the Linux VM...