Routing

Objective The lab focuses on troubleshooting real-world network failures by systematically isolating issues at each layer of the network stack. Network Topology LAN (User Network) DMZ (Service Network) 192.168.10.0/24 192.168.20.0/24 __________________ _____________________ Client VM Server VM 192.168.10.101 192.168.20.10 | | | | ________ Firewall VM ___________ (Router + Firewall) Issue 1: No connectivity between networks Failure to connect to the webserver Troubleshooting Workflow Step 1 - Verify the service exists From Server: ...

🧪 Inter-Interface Packet Forwarding Failure Investigation 📌 Objective Diagnose why a client cannot reach the internet ⚙️ Environment Virtualization: VirtualBox OS: ( 1 DHCP Server VM + 1 Client VM) 🛠️ Lab Network Topology Server (DHCP) IP: 192.168.10.10 Interfaces: enp0s8 -> LAN enp0s3 -> NAT Client VM IP: 192.168.10.100 Interface: enp0s8 Gateway: 192.168.10.10 🚨 Incident Statement Client cannot access the internet 🔍 PHASE 1 — Verify the Problem Run on Client VM: ...