Private IP VM connection to RDP with out using firwall public IP

Question

My VM machine private IP is 10.2.1.5 and its subnet is associated with firewall public IP which is already configured.
I can connect this private IP using firewall public IP after configuration. however why I am still not able to RDP to this private VM with its private IP why? Please suggest.

Answer 1

When you connect to the public firewall IP you are using public networking. When you want to connect to the private IP, the computer you connect from needs to have a private connection to the network containing your VM. Azure VPN Gateways and ExpressRoute are two ways to create a private network between an on premises location (Site-2-Site VPN or ExpressRoute) or home and mobile locations (Point-2-Site VPN).

If you want to connect to your VM's without exposing them on a public IP through the firewall, Azure Bastion provides an excellent means of home- and on-premise access to your VM's with all the security mechanisms like MFA and Azure RBAC for security through terminals in the Azure Portal.

Answer 2

Hi @sns ,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

I see @Roderick Bant has already addressed your query.
As stated, if you would like to have access to your VM using private IP, you would be required to set up a private Network between Azure and your OnPrem machines.

The following options are useful if you would like to connect your OnPrem and Azure,

• Azure VPN
  a. Site-to-Site - For OnPrem servers
  b. Point-to-Site - For remote users
• Azure ExpressRoute
• Azure vWAN - For setting up a Branch-to-Branch connectivity

You can consider Azure Bastion if you would like to provide connectivity to your VMs via Internet.

Azure Bastion : https://learn.microsoft.com/en-us/azure/bastion/bastion-overview
SKU Comparison : https://learn.microsoft.com/en-us/azure/bastion/bastion-overview#sku
FAQ : https://learn.microsoft.com/en-us/azure/bastion/bastion-faq

I hope this helps.

Thanks,
Kapil

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