Internet Not Working

Networking-BeginnerBreak & Fix

00:00

Simulated Environment - No real systems affected

Scenario

A user reports that their virtual machine cannot access websites. Your task is to diagnose the issue, identify the root cause, and repair the network configuration.

Objective

Diagnose and repair a network connectivity issue where the internet is not working due to DNS misconfiguration.

Diagnostic Steps0/6

1. Check network settings

View network interface configuration using ip addr or ifconfig

2. Test IP connectivity

Ping an IP address (8.8.8.8) to test basic connectivity

3. Identify DNS issue

Try pinging a domain name to identify DNS resolution problems

4. Inspect DNS configuration

Check /etc/resolv.conf for the DNS server settings

5. Repair DNS settings

Update resolv.conf with correct DNS server (8.8.8.8)

6. Validate the fix

Restart networking and verify internet access is restored

Network Status

IP ConnectivityUnknown

DNS ResolutionUnknown

Internet Access Down

network-lab-01 ~ network diagnosticsDNS Issue Simulation

Virtual Network Diagnostic Lab

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System: Ubuntu 22.04 LTS - Network Troubleshooting Environment

Issue: User reports internet is not working

Type 'help' to see available diagnostic commands.

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Titan AI

Welcome to the "Internet Not Working Troubleshooting Lab" lab! I'm Titan AI, your intelligent lab assistant. I'll help you understand tasks, troubleshoot errors, and guide you through each step. How can I help you get started?

07:36 PM