Can I change VM's private ip address (e.g. 10.1.1.4) to the public static ip address 20.228.251.204

Question

Hi all. I recently started learning Azure. I created a virtual machine someone else to use it as a web server. The developer sees the IP address as 10.1.1.4 in the TCP/IPv4 properties in the operating system of the VM which is the same as private static IP address visible on the azure portal. The developer requires this IP address (10.1.1.4) to be same as the public IP address of VM visible on azure portal 20.228.251.204. Is it possible at all? If yes, how can I do this?

Answer 1

Hello @pankaj kumar ,
Thanks for reaching out to Microsoft QnA. Happy to answer your question.
No, you cannot set the private address of the VM to be same as that of the public address. Both private and public addresses have separate address ranges and have a different purpose. If the developer wants to access the web server from the Internet, he will require the public IP address.
On the other hand, the private address of the VM is only private to the virtual network that the VM is associated to, and cannot be accessed from Internet. Only the resources that are part of the same virtual network can access the web browser VM using the private IP address. Whereas, anybody outside the virtual network will not be able to access the VM using private IP address, but has to access the VM using it's public IP address.
Hope this explains the usage of public and private IP addresses.

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