AZ-104 – Question 215


You have the Azure virtual network named VNet1 that contains a subnet named Subnet1. Subnet1 contains three Azure virtual machines. Each virtual machine has a public IP address.
The virtual machines host several applications that are accessible over port 443 to users on the Internet.
Your on-premises network has a site-to-site VPN connection to VNet1.
You discover that the virtual machines can be accessed by using the Remote Desktop Protocol (RDP) from the Internet and from the on-premises network.
You need to prevent RDP access to the virtual machines from the Internet, unless the RDP connection is established from the on-premises network. The solution must ensure that all the applications can still be accessed by the Internet users.
What should you do?

  • A. Modify the address space of the local network gateway
  • B. Create a deny rule in a network security group (NSG) that is linked to Subnet1
  • C. Remove the public IP addresses from the virtual machines
  • D. Modify the address space of Subnet1

Correct Answer: B 
You can use a site-to-site VPN to connect your on-premises network to an Azure virtual network. Users on your on-premises network connect by using the RDP or
SSH protocol over the site-to-site VPN connection. You don’t have to allow direct RDP or SSH access over the internet.