ludigeeks
Activity Sheet: The Minimal Internet (MiniInternet)
🎯 Objectives
- Understand network threats, including:
- Denial of Service (DoS) attacks
- Loss of control over transmitted information (once shared, data cannot be easily deleted)
- Man-in-the-Middle Attacks (not included in this session)
⏳ Activity Duration
2 hour 30 minutes
👥 Number of Participants
- Minimum: 3 participants with 3 computers.
- Depends on available computers (participants can work in pairs on a single computer).
🏫 Recommended Age
- Participants must be able to read, write and count (approximately 13 years old and older).
🖥️ Required Materials
- One long and wide cardboard tube
- One sheet of paper per service (bakery, butcher, greengrocer, restaurant, post office, town hall)
- Web server setup:
- Apache web server with PHP module installed on each computer
- Local network:
- router with wifi for example
- Computers with text editor:
- If possible html text editor
🏗️ Activity Flow
1️⃣ Explanation: How Servers and Clients Work
- The server responds to requests from the client.
- The client sends a request through the cardboard tube by speaking into it.
- The server listens through the tube and then displays the requested page at the other end.
- The client looks through the tube to see the displayed page.
🔍 Key Takeaways
- This mimics how computer networks function.
- Wi-Fi transmits communications between clients and servers using inaudible waves.
- A computer can be both a client and a server simultaneously.
- Optical fiber transmits data using light.
- Ethernet cables transmit data using electrical signals.
- A network is a group of computers communicating using a shared connection (Wi-Fi, fiber, or cable).
- The Internet is a massive network that connects smaller networks worldwide.
- In this workshop, we create a local network simulating the Internet, with different online stores.
💡 Web Browsers and Servers
- Web browsers are like a client’s “eye,” interpreting and displaying web pages.
- Web servers are like the “ears” of the system, listening to requests and responding with web pages.
- A server does not display anything on the screen; it simply communicates via the network.
2️⃣ Hands-on Activity: Creating a Mini Internet
- Each participant creates their own online store.
- The Wi-Fi router acts as a relay, forwarding requests between devices.
- Participants write the web page using HTML.
Basic HTML Code for a Store Page
```html
Bakery
Welcome to my online store! Place your orders below, and I'll deliver them via mail.