Exam AZ-103 topic 4 question 36 discussion

SIMULATION -
Please wait while the virtual machine loads. Once loaded, you may proceed to the lab section. This may take a few minutes, and the wait time will not be deducted from your overall test time.
When the Next button is available, click it to access the lab section. In this section, you will perform a set of tasks in a live environment. While most functionality will be available to you as it would be in a live environment, some functionality (e.g, copy and paste, ability to navigate to external websites) will not be possible by design.
Scoring is based on the outcome of performing the tasks stated in the lab. In other words, it doesn't matter how you accomplish the task, if you successfully perform it, you will earn credit for that task.
Labs are not timed separately, and this exam may have more than one lab that you must complete. You can use as much time as you would like to complete each lab. But, you should manage your time appropriately to ensure that you are able to complete the lab(s) and all other sections of the exam in the time provided.
Please note that once you submit your work by clicking the Next button within a lab, you will NOT be able to return to the lab.
You may now click next to proceed to the lab.
Use the following login credentials as needed:

Azure Username: XXXXXXX -

Azure Password: XXXXXXX -
The following information is for technical support purposes only:

Lab Instance: 9172796 -

You need to allow RDP connections over TCP port 3389 to VM1 from the Internet. The solution must prevent connections from the Internet over all other TCP ports.
What should you do from the Azure portal?

Suggested Answer: See solution below.
Step 1: Create a new network security group
Step 2: Select your new network security group.

Step 3: Select Inbound security rules. Under Add inbound security rule, enter the following
Destination: Select Network security group, and then select the security group you created previously.

Destination port ranges: 3389 -

Protocol: Select TCP -

References:
https://docs.microsoft.com/en-us/azure/virtual-network/tutorial-filter-network-traffic