Free Cybersecurity Courses for Beginners and Professionals

Cybersecurity is a rapidly growing field, and gaining the right skills is essential. Below is a curated list of free cybersecurity courses covering networking, cloud security, penetration testing, vulnerability management, and more.

1. Basic Cybersecurity Courses

• Cisco Network Essentials – https://lnkd.in/eMXxFBPN
• Palo Alto Networks Cybersecurity – https://lnkd.in/ebz4VZmQ
• AWS Cloud Security – https://lnkd.in/e_auX7VE
• Microsoft Azure Security – https://lnkd.in/eCq_dvDq
• Google Cloud Security – https://lnkd.in/eDNWnVsD

2. Cybersecurity Fundamentals

• SANS Aces (Intro to Cyber) – https://lnkd.in/eNCPrtdd
• ISC² Certified in Cybersecurity – https://lnkd.in/e6jB_6af
• Coursera Cybersecurity Basics – https://lnkd.in/ePMNVDm5
• EC-Council Free Courses – https://lnkd.in/ewiVUkYt
• Cisco Cyber Induction – https://lnkd.in/e8C3jacc
• Fortinet NSE Training – https://lnkd.in/es3c_Q6E

3. Penetration Testing & Ethical Hacking

• TCM-Security Practical Hacking – https://lnkd.in/eJQKmhnt
• PortSwigger Web Hacking Academy – https://lnkd.in/eEa-fNfu
• CodeRed Hacking Essentials – https://lnkd.in/eJbyZp_9
• Metasploit Unleashed (Offensive Security) – https://lnkd.in/eJFcNSsz
• Hacker101 (Bug Bounty) – https://lnkd.in/eJK5xp2A

4. Vulnerability Management

• Qualys Vulnerability Training – https://lnkd.in/eDWu2zyT
• Tenable Nessus Intro – https://lnkd.in/eQW2Zjjj

5. SIEM & Security Monitoring

• Splunk Fundamentals – https://lnkd.in/e5ZVAEuF
• IBM QRadar Training – https://lnkd.in/ebjbyq_x
• Elastic Security (ELK Stack) – https://lnkd.in/e-jXsnVs

6. Secure Software & Engineering

• Oxford Secure Software Dev – https://lnkd.in/eJHp7Dp2
• Stanford Cyber Resilience – https://lnkd.in/eg9BM5Bv

You Should Know: Essential Cybersecurity Commands & Tools

Linux Security Commands

• Check open ports:

  sudo netstat -tulnp 
  sudo ss -tuln 
  

• Scan for vulnerabilities with Nmap:

  nmap -sV -A target_ip 
  

• Check user login attempts:

  lastlog 
  grep "Failed password" /var/log/auth.log 
  

Windows Security Commands

• Check active connections:

  netstat -ano 
  

• List scheduled tasks (malware check):

  schtasks /query /fo LIST /v 
  

Penetration Testing Tools

• Run Metasploit exploit:

  msfconsole 
  use exploit/multi/handler 
  set payload windows/meterpreter/reverse_tcp 
  exploit 
  

• Burp Suite for web app testing (intercept requests).

SIEM & Log Analysis

• Splunk Query Example:

  index=security sourcetype=firewall action=blocked | stats count by src_ip 
  

What Undercode Say

Cybersecurity is not just about tools—it’s about mindset. Always verify logs, patch systems, and practice ethical hacking in controlled environments. Use Wireshark for network analysis, John the Ripper for password cracking (legally), and Snort for intrusion detection.

Expected Output: A well-secured system with monitored logs, updated patches, and restricted unauthorized access.

(Note: All links are educational—use knowledge responsibly.)

References:

Reported By: Maksyflay Gr%C3%A1tis – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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