Born2BeRoot Guide – Key Concepts & Resources
📌 Essential Topics to Master
1. Virtualization & Linux Basics
- Virtual Machines (VMs):
- Concept of virtualization (VirtualBox, QEMU).
- Differences between Debian and Rocky Linux.
-
Linux File Structure:
- Key directories (
/,/home,/var,/boot,/tmp).
- Key directories (
2. Partitioning & LVM
- Disk Partitioning:
- Primary vs. Logical partitions.
- Filesystem types (
ext4,swap).
- LVM (Logical Volume Manager):
- Dynamic volume resizing.
- Encrypted partitions (
LUKS).
3. System Security
- User & Group Management:
sudo,useradd,usermod,chage.- Password policies (
PASS_MAX_DAYS,libpam-pwquality).
- Firewall & SSH:
- UFW (Uncomplicated Firewall) rules.
- SSH hardening (port change,
PermitRootLogin no).
- AppArmor:
- Mandatory Access Control (MAC) for processes.
4. Package Management
- APT vs. Aptitude:
- Installing, updating, and removing packages.
- Dependency handling.
5. Automation & Monitoring
- Cron Jobs:
- Scheduling tasks (
crontab -e). - Logging (
/var/log/).
- Scheduling tasks (
- Bash Scripting:
- System monitoring script (CPU, RAM, disk usage).
6. Bonus (Multi-FD Reading)
- SSH Port Forwarding:
- Connecting to multiple VMs simultaneously.
- Signature Verification:
shasumfor VM integrity checks.
🔧 Recommended Tools & Commands
| Task | Command/Tool |
|---|---|
| Check CPU/RAM | lscpu, free -h, vmstat |
| Disk Partitions | lsblk, df -h, fdisk |
| User Management | adduser, chage -l, getent |
| Firewall Rules | ufw allow 4242, ufw status |
| SSH Configuration | sudo nano /etc/ssh/sshd_config |
| Cron Jobs | sudo crontab -u root -e |
📚 Resources
- Debian ISO: Download Here
- VirtualBox: Download Here
- LVM Guide: Official Docs
- UFW Tutorial: DigitalOcean Guide
🚀 Tip: Focus on understanding LVM, password policies, and UFW/SSH hardening—these are critical for evaluation. Use journalctl for troubleshooting!
⚠️ Note: This guide highlights key concepts only.