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☁️ Practical 3: Set Up a VPC

AWS VPC

Objective: Create and configure a Virtual Private Cloud (VPC) with public and private subnets, enabling routing through Internet and NAT Gateways.

🖥️ Method 1: Console / GUI Guide (AWS Management Console)

If you prefer to provision infrastructure manually via the Management Console, follow these steps:

  1. Log In: Navigate to the VPC Dashboard in the AWS Console.
  2. Initiate Create: Click Create VPC.
  3. Select Topology: Select the VPC and more wizard to automatically generate subnets, route tables, and gateways, or stick to VPC only to build them completely manually.
  4. Provision Subnets: Ensure you provision at least one Public Subnet and one Private Subnet.
  5. Internet Access: Attach an Internet Gateway to your VPC to allow external traffic.
  6. NAT Routing: Create a NAT Gateway inside your Public Subnet and update the Private Subnet's route table to direct outbound internet traffic to the NAT Gateway.
  7. Verify: Launch an EC2 instance in both subnets to verify connectivity differences (SSH into the public one to reach the private one).

🚀 Method 2: Automated Script Guide

For rapid, reproducible deployments, use the provided bash scripts.

🔍 Script Analysis

Script Name Action Performed
3networkdeploy.sh 🟢 Fully automates custom VPC creation, including a public and private subnet, an Internet Gateway, NAT Gateway, Route Tables, and deploys one EC2 instance into each subnet to demonstrate isolated networking concepts.
3networkcleanup.sh 🔴 Gracefully tears down all VPC dependencies in reverse order logic (Instances → NAT → EIP → IGW → Subnets → VPC).

🛠️ Usage Instructions

Prerequisites:

  • AWS CLI installed and configured with active credentials.

Execute the following commands from the root directory:

# 1. Navigate to scripts folder
cd scripts/

# 2. Provide execution permission
chmod +x 3_network_deploy.sh 3_network_cleanup.sh

# 3. Create custom VPC, Subnets, Gateways, and Instances
./3_network_deploy.sh      

# 4. Delete all networking infrastructure
./3_network_cleanup.sh

🖼️ Result / Output

VPC Dashboard

Figure 3.1: AWS VPC Management Console showing the custom Practical-VPC.

Subnet Dashboard

Figure 3.2: Configured public and private subnets with respective CIDR blocks.

Public Subnet Creation

Figure 3.3: Step-by-step creation of the public-facing subnet.

Private Subnet Creation

Figure 3.4: Logical partitioning of the isolated private subnet.

VPC Instance Launch

Figure 3.5: Launching an EC2 instance within the structured VPC networking.

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