README.md

Linux Systems Support Lab

This project simulates the daily responsibilities of a Service Engineer supporting Linux-based systems in production environments.

The lab focuses on:

• Linux administration
• User management
• SSH support
• Network troubleshooting
• DNS troubleshooting
• Service monitoring
• Incident response
• Technical documentation

The goal was to develop and demonstrate practical troubleshooting and support skills commonly required in technical support and field service engineering roles.

Environment

Host:

• Windows 11

Virtualization:

• Oracle VirtualBox (via Vagrant)

Guest OS:

• Ubuntu Server 20.04 LTS

Services:

• OpenSSH
• Apache2
• FTP
• Systemd

Tools:

• ping
• traceroute
• nslookup
• ssh
• scp
• journalctl
• netstat
• ss

Skills Demonstrated

• Linux Administration
• User & Group Management
• SSH Configuration
• Network Diagnostics
• DNS Troubleshooting
• Firewall Configuration
• Service Monitoring
• Log Analysis
• Root Cause Analysis
• Technical Documentation

Runbooks

• User Management

• SSH Aministration

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Documented Incidents

• SSH failure

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Scripts