Public IP address

• Public IP addresses enable Azure resources to communicate to Internet and public-facing Azure services
• A resource without a public IP assigned can communicate outbound
• In Azure Resource Manager, a public IP address is a resource that has its own properties
• Resources that can be associated with public IP address:
  • Virtual machine network interfaces
  • Internet-facing load balancers
  • VPN gateways
  • Application gateways
  • Azure Firewall
• Once assigned, the address is dedicated to the resource, until it’s unassigned
• The IP address is released when the resource is deleted
• Details: https://docs.microsoft.com/en-us/azure/virtual-network/public-ip-addresses

Creating Public IP address

Create Resource Group:

• Go to: https://portal.azure.com/#create/Microsoft.ResourceGroup (login to Azure portal first, then click the link)
• Fillup details (i.e. name ‘demo-rg’, select subscription etc.)
• Create

Create IP address:

• Go to: https://portal.azure.com/#create/Microsoft.PublicIPAddress-ARM (login to Azure portal first and then click the link)
• Fillup details (i.e. name pip-iaas-demo, resource group, DNS label etc.)
• Create

Notes:

• The portal doesn’t provide the option to assign a public IP address to the network interface when you create it (If you want to create a network interface with a public IP address, you must use the CLI or PowerShell to create the network interface)
• Public IP address can be assigned to the network interface after creating it

SKU

• When you assign a standard SKU public IP address to a virtual machine’s network interface, you must explicitly allow the intended traffic with a network security group
• https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-network-interface-addresses#skus

Associating public IP address to Network Interface Card

See: Associate public IP address to NIC