| Level | Category | Topic / Description | Link |
|---|---|---|---|
| 🟢 Beginner | Linux Basics | 🔹 Linux File Permissions – Explanation of rwx, chmod, chown, umask, symbolic and numeric modes with examples and diagrams. |
View Notes |
| 🟢 Beginner | Shell Scripting | 🔹 Bash Scripting Basics – Variables, loops, conditionals, functions, I/O redirection, and automation fundamentals. | View Notes |
| 🟢 Beginner | Linux Commands Collection | 🔹 Kali Linux All Commands – Essential Kali commands for penetration testing, system checks, and network tools. | View Notes |
| 🔹 Ubuntu Commands Reference | View | ||
| 🔹 Fedora Commands Reference | View | ||
| 🟡 Intermediate | Web Server Setup | 🔹 Nginx Setup & Configuration – Step-by-step guide for installing and configuring Nginx, directory structure, and virtual hosts. | View Notes |
| 🟠 Advanced | Network Troubleshooting | 🔹 Nginx Troubleshooting Guide – Diagnosing connection issues, DNS, reverse proxy problems, and HTTP response code analysis. | View Notes |
| 🟠 Advanced | Network Forensics | 🔹 Network Forensics & Packet Analysis – Using tools like Wireshark, tcpdump, and analyzing ICMP, HTTP, and TCP behavior. | View Notes |
| 🔴 Expert | Nmap & Security Analysis | 🔹 IP Not Found in Nmap – Steps to troubleshoot unreachable IPs, ICMP filters, firewall rules, routing, and port scans. | View Notes |
| 🔴 Expert | Firewall & Security Configuration | 🔹 Allow Firewall Rules for Nginx – Configure UFW, firewalld, iptables to allow ports and IP-specific access in Linux or cloud. | View Notes |
graph TD
A[Linux Basics] --> B[Bash Scripting]
B --> C[Ubuntu & Fedora Commands]
C --> D[Nginx Setup]
D --> E[Nginx Troubleshooting]
E --> F[Network Forensics]
F --> G[Firewall & Security Configuration]
G --> H[Nmap & Network Analysis]