Hi @Guillaume LILLETTE
To access internet in azure VM's you requred public IP attached to the VM Or Azure Virtual Network NAT simplifies outbound-only Internet connectivity for virtual networks. When configured on a subnet, all outbound connectivity uses your specified static public IP addresses..
Before you can connect to the public IP address from the internet, ensure that you have the necessary ports open in any network security group (NSG) that you might have associated to the network interface.
Associate a public IP address to a virtual machine
Tutorial: Create a NAT gateway using the Azure portal
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