Week 2 Worklog

Week 2 Objectives:

  • Deepen understanding of AWS networking fundamentals (VPC, Subnets, Route Tables, IGW).
  • Learn how to design and configure a custom VPC with both public and private subnets.
  • Practice managing connectivity: set up route entries, attach an Internet Gateway, and associate Elastic IPs.
  • Explore Elastic Network Interfaces (ENI) and VPC Endpoints to connect securely to AWS services.
  • Strengthen skills in combining AWS Management Console and AWS CLI for parallel resource management.

Tasks to be carried out this week:

DayTaskOn-site?Date
1- Review internship rules & AWS account setup basics
- Learn about AWS global infrastructure (Regions, Availability Zones, Edge Locations)		✅09/15/2025
2- Introduction to Amazon VPC and why networking is essential in AWS
- Understand CIDR blocks and IPv4 vs IPv6
- Create a simple VPC with a default subnet		09/16/2025
3- Learn about Subnets (Public vs Private)
- Reserved IPs in subnets
- Practice creating multiple subnets in different Availability Zones		09/17/2025
4- Study Route Tables: default vs custom
- Configure routes for intra-VPC communication
- Add route entry to allow internet access (0.0.0.0/0 → IGW)		09/18/2025
5- Learn about Internet Gateway (IGW) and how it connects VPCs to the internet
- Explore Elastic IPs (EIP) and billing considerations
- Practice attaching an EIP to an EC2 instance		09/19/2025
6- Understand Elastic Network Interfaces (ENI) and their portability
- Learn about VPC Endpoints (Interface vs Gateway)
- Explore real-world use cases for private vs public traffic		09/20/2025

Week 2 Achievements

  • Understood AWS Networking Services and their role in cloud infrastructure:

    • Amazon VPC (Virtual Private Cloud)
    • Subnets (Public & Private)
    • Route Tables
    • Internet Gateway (IGW)
    • Elastic Network Interface (ENI)
    • Elastic IP (EIP)
    • VPC Endpoints (Interface & Gateway)

  • Learned how to create and configure a VPC:

    • Defined CIDR ranges (10.10.0.0/16 as VPC, 10.10.x.0/24 as subnets).
    • Distinguished between public subnets (with IGW routes) and private subnets.
    • Understood subnet IP reservation (network, broadcast, router, DNS, future use).

  • Practiced working with Route Tables:

    • Identified the default route table and its role in intra-VPC communication.
    • Created and modified custom route tables.
    • Added route entries (e.g., 0.0.0.0/0 → IGW) to allow public subnet internet access.

  • Explored Elastic Network Interface (ENI) and Elastic IP (EIP):

    • Understood that ENI can be moved across EC2 instances while retaining IP and MAC.
    • Associated static Elastic IP with ENI for internet reachability.
    • Learned about AWS charging for unused EIPs to avoid waste.

  • Gained knowledge about Internet Gateway (IGW):

    • Role as a horizontally scalable AWS-managed gateway to the internet.
    • Steps: Create IGW → Attach to VPC → Add route in Route Table → Associate with Public Subnet.
    • Understood the simplified approach compared to traditional network appliances.

  • Analyzed VPC Topology using diagrams:

    • Identified relationship between VPCs, Availability Zones, and subnets.
    • Traced EC2 connectivity through ENI, Route Table, and IGW.
    • Differentiated how private vs. public subnets interact with external traffic.

  • Acquired a clear mental model of how AWS networking components fit together to support real-world scenarios (public web servers, private databases, hybrid connectivity, etc.).