Configure a static IP address
Microsoft Azure instances are launched with a dynamic IP address by default, which means that the IP address changes every time the server is stopped and restarted. To avoid this, you can configure a static IP address for your server. Follow these instructions:
Log in to the Microsoft Azure Management Portal if you are not already logged in.
Navigate to the “Resource Group Overview” page of your original server and click on the public IP address resource link.
From the left-side menu, select “Settings -> Configuration”. In the “Assignment” section, activate the “Static” option. Click “Save” to make the changes take effect.