Discovering Cloud Public IPs for cloud hosts

Overview

Public IPs are the IP addresses assigned to cloud resources and used to communicate with external systems. 

Supported cloud providers

• Amazon Web Services
• Microsoft Azure
• Google Cloud Platform
• Alibaba Cloud Platform

Retrieving

To retrieve the Public IPs for cloud hosts, discovery platform scripts (for both Linux and Windows) are processing Instance Metadata.

• For Amazon Web Services  http://169.254.169.254/latest/meta-data/network/interfaces/macs/
• For Google Cloud Platform  http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/
• For Microsoft Azure  http://169.254.169.254/metadata/loadbalancer?api-version=2021-12-13 or http://169.254.169.254/metadata/instance/network/interface?api-version=2021-12-13
• For Alibaba Cloud Platform  http://100.100.100.200/latest/meta-data/eipv4

Examples

AWS public IPv4

Azure public IPv6

GCP public IPv4

Information sources

The following official product documentation sources were used:

Amazon Web Services

• https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html

Microsoft Azure

• https://learn.microsoft.com/en-us/azure/load-balancer/instance-metadata-service-load-balancer
• https://learn.microsoft.com/en-us/azure/virtual-machines/windows/instance-metadata-service?tabs=windows

Google Cloud Platform

• https://cloud.google.com/compute/docs/metadata/overview

Alibaba Cloud Platform

• https://www.alibabacloud.com/help/en/elastic-compute-service/latest/instance-metadata-items