Creating a Utility VM on Google Cloud (GCP)

Introduction

This blog is in continuation of my previous article - Oracle OCI Cloud - Connecting a Private VM from a Public Bastion Host and walk through steps for creating a VM instance on Google Cloud GCP which we will use to establish VPN connectivity with Oracle Cloud - the steps for which will be outlined in next article in this series. 

Here's a quick reference of configurations for this VM that we will be using in the next article while configuring VPN connectivity

VPC: gcp-oci-vpn-demo

VCN CIDR: 192.168.0.0/16

Subnet: subnet1

Region:  europe-west1

Subnet CIDR: 192.168.0.0/16

VM: instance-1

Public IP: 35.210.10.232

Private IP: 192.168.0.2

Oracle OCI Cloud - Connecting a Private VM from a Public Bastion Host

Introduction

The following outlines the configuration for connecting a backend private instance though a public instance in the same VCN but different subnets. 

This post talks about the necessary configurations of Router, Firewall, and builds a complete end-end example. 

High-Level Steps

• Create VCN and two subnets (one public, one private)
• Create VMs - one in each subnet
• Configure Router
• Configure Firewall
• Test and Verify
• Access to OCI Instance

Note this is part one of the multi-part series wherein we extend this example and do necessary configuration on OCI and try to establish Hybrid Connectivity to a private instance on Google Cloud (GCP) using VPN.

Pre-requisites

• User with necessary privileges to create VCN, VM and configure networking
• SSH key (public and private key pair) - Basic knowledge of networking - CIDR, Routers, Firewall, etc..