Writeups

Technical documentation of tools, techniques, and findings. Each writeup shows clear steps, results, and lessons.

2026-03-24Security AnalysisIncident Response

Linux Authentication Log Analysis: Investigating SSH Brute-Force Attempts

Practical analysis of failed SSH connection attempts in a Linux test lab using journalctl, auth.log, grep, and awk to identify source IPs, targeted accounts, and event frequency.

LinuxBashSSHLog Analysis

2026-03-20Security Scanning

Nmap: Service Enumeration and Scan Timing in Lab Environments

Comparative analysis of SYN scan vs connect scan behavior, banner grabbing, and timing templates in a segmented test network.

NmapLinuxNetworking

2026-03-15Network Analysis

Wireshark: Investigating TCP Traffic and Handshakes

Step-by-step analysis of TCP three-way handshakes, connection resets, and packet retransmissions in a controlled lab network.

WiresharkTCP/IPLinux