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Midori's Linux Dojo 🌸/Phase 2 - Networking/Exercises.md

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+# 🌐 Phase 2: Networking
+
+> Goal: Machines communicate — ping, SSH, file transfers
+
+---
+
+## 🎯 Exercise 1 — Ping & IPs
+
+```bash
+# Check your network
+ip addr show eth0
+ip route
+
+# Ping the other lab VM
+ping -c 4 10.0.1.2        # From alpine-1 → alpine-2
+ping -c 4 10.0.1.1        # From alpine-2 → alpine-1
+
+# Check ARP table
+ip neigh
+
+# Advanced network tools
+ip addr                 # All interfaces
+ip route                # Routing table
+traceroute 10.0.1.2     # Path between VMs
+```
+
+### 📝 Questions:
+1. What's the MAC address of the other VM?
+2. Can you ping alpine-hop (10.0.1.3) from alpine-1?
+
+---
+
+## 🎯 Exercise 2 — SSH Keys
+
+```bash
+# Generate an SSH key
+ssh-keygen -t ed25519
+
+# Copy to the other VM
+ssh-copy-id root@10.0.1.2
+
+# Test passwordless login
+ssh root@10.0.1.2 'hostname; uptime'
+```
+
+---
+
+## 🎯 Exercise 3 — File Transfer
+
+```bash
+# SCP (secure copy)
+echo "Secret message" > /root/secret.txt
+scp /root/secret.txt root@10.0.1.2:/root/
+
+# RSYNC (sync directories)
+rsync -av /root/lab/ root@10.0.1.2:/root/lab-backup/
+```
+
+---
+
+## 🎯 Exercise 4 — Network Services
+
+```bash
+# Check listening ports
+ss -tlnp
+
+# Start a simple HTTP server on alpine-1
+python3 -m http.server 8080 &
+
+# Access it from alpine-2
+curl http://10.0.1.1:8080/
+
+# Kill the server
+kill %1
+```
+
+---
+
+## ✅ Phase 2 Checklist
+- [ ] Ping between VMs
+- [ ] SSH key-based auth
+- [ ] File transfer with `scp` / `rsync`
+- [ ] Network services
+
+**Previous:** [[Phase 1 - Walking]] | **Next:** [[Phase 3 - Users and Files]]