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Blue Team Ops — Detect, Block, Respond

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Lessons
Monitoring & Detection
01Read and analyze system logs
40 min
02Detect an Nmap Scan in Firewall Logs
35 min
03fail2ban — Automatically Banning Attackers
45 min
04Harden a Server with UFW and iptables
50 min
IDS/IPS with Suricata
05Introduction to IDS/IPS — Understanding Network Detection
40 min
06Installing and Configuring Suricata
50 min
07Write Your Own Suricata Detection Rules
50 min
Centralized Logging with ELK
08Introduction to SIEM — Why Centralize Logs
35 min
09Set Up the ELK Stack
60 min
10Create Security Alerts and Dashboards in Kibana
50 min
Forensics & Incident Response
11Forensic Analysis of a Compromised System
55 min
12Recover Deleted Data with Autopsy and Foremost
50 min
13Write a Professional Incident Report
45 min

Lesson 04

Harden a Server with UFW and iptables

Learn how to configure UFW and iptables to build a robust firewall on your Linux server — block unauthorized traffic, expose only the necessary ports, and withstand aggressive scans.

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