แหล่งเรียน Network Security / Cybersecurity ฟรีออนไลน์ 2024 (คัดสรรมากคุณภาพ)
🎓 Platform หลัก (Structured Learning Paths)
| Platform | จุดเด่น | คอร์สแนะนำ | ค่าใช้จ่าย |
| TryHackMe | Guided Labs, Room-based, Gamified, Beginner-friendly | Pre-Security, Complete Beginner, SOC Level 1, Network Fundamentals, Jr Penetration Tester | Free Tier พอใช้ / $10/mo (Sub) |
| Hack The Box (HTB) | Realistic Machines, CTF Style, Proving Grounds, Academy | Starting Point (Free), Academy Modules, Retired Machines (Write-ups) | Free Tier / $14/mo (VIP) |
Fortinet NSE Institute — NSE 1, 2, 3, 4 **ฟรีทั้งหมด** + Lab VM (FortiGate) — คุณค่าสูงมากสำหรับ Network Security
Palo Alto Networks Cybersecurity Academy — Free Digital Learning (EDU-210 Network Security Fundamentals, EDU-310 Cloud Security) + Lab Access
Cisco Networking Academy (NetAcad) — Networking Basics, Cybersecurity Essentials, IoT Security — ผ่าน Partner/School บางแห่งฟรี
Microsoft Learn — SC-900, SC-200, SC-300, AZ-500 Learning Paths + Free Sandbox
Google Cloud Skills Boost — Cloud Security, Security Command Center, Chronicle SIEM Labs — Free Credits ทุกเดือน
AWS Skill Builder — Security Fundamentals, Security Engineering, Specialty Prep — Free Digital Training
IBM SkillsBuild — Cybersecurity Analyst, Threat Intelligence, Incident Response — Free
📺 YouTube Channels (คุณภาพสูง, ฟรี, อัปเดต)
- Professor Messer — A+, Network+, Security+ (SY0-701) **Full Course ฟรี** — Gold Standard
- NetworkChuck — Networking, Certifications, Career, Labs, Motivation
- David Bombal — Networking, Python, Cisco, Cybersecurity, Interviews
- John Hammond — CTF, Malware Analysis, Reverse Engineering, Exploit Dev
- LiveOverflow — Binary Exploitation, Web Security, CTF, Hardware
- IppSec — HTB Machine Walkthroughs (Methodical, 教學式)
- The Cyber Mentor (Heath Adams) — Pentesting, OSCP Prep, Career Advice
- HackerSploit — Penetration Testing, Malware Analysis, Tools Tutorials
- Computerphile — Computer Science Concepts (Crypto, Compression, Algorithms)
- Ben Heck / Low Level Learning — Hardware, Firmware, Reverse Engineering
📚 Open Courseware / University Courses
- MIT OpenCourseWare: 6.858 Computer Systems Security, 6.857 Network and Computer Security
- Stanford CS253: Web Security (Video + Slides)
- CMU 15-440/18-733: Distributed Systems / Applied Crypto
- NYU Tandon: Cybersecurity MOOCs (Coursera/edX Audit Free)
- HEC Paris / EPFL / ETH Zurich: Cryptography, Privacy, Security Courses (Coursera/edX Audit)
🏆 CTF / Practice Platforms (Learn by Doing)
- picoCTF (CMU) — Beginner CTF, Year-round, High School/College Focus — **Best Starting Point**
- OverTheWire: Bandit — Linux CLI Wargame (Level 0-33) — **Must Do First**
- OverTheWire: Narnia, Behemoth, Krypton — Binary Exploitation, Crypto, RE
- CryptoHack — Cryptography Challenges (Interactive, Modern)
- AttackDefense — Hands-on Labs (Free Tier)
- Blue Team Labs Online (BTLO) — SOC/Blue Team Labs (Free Tier)
- Let's Defend — SOC Analyst Simulation (Free Tier)
- CyberDefenders — DFIR/Blue Team Challenges (Free)
📖 Documentation & References (Primary Sources)
- NIST Publications: SP 800-53, 800-171, 800-61 (IR), 800-37 (RMF), CSF 2.0 — **Free PDF**
- MITRE ATT&CK® / D3FEND™ — Threat Modeling, Detection Engineering — Free
- OWASP Top 10, ASVS, MASVS, Cheat Sheets, SAMM — AppSec Bible — Free
- CIS Benchmarks / Controls — Hardening Guides (PDF Free) / Controls v8
- RFCs (IETF): TLS 1.3 (8446), IPsec, DNSSEC, BGPsec, QUIC — Free
- Vendor Docs: Palo Alto, Fortinet, Cisco, Check Point, CrowdStrike, SentinelOne, Splunk, Elastic — Excellent Free Docs
🎓 Certifications ที่มี Free Training
- Fortinet NSE 1-4: Free Training + Lab → Exam ค่าสอบ $100-200
- Palo Alto Networks PCCSA / PCNSE: Free Digital Learning (EDU-210)
- Microsoft SC-900 / SC-200: Free Learning Paths (Exam แยก)
- AWS Cloud Practitioner / Security Specialty: Free Digital Training
- Google Cybersecurity Certificate (Coursera): $49/mo (7-day Free Trial, Financial Aid Available)
- CompTIA Security+: Professor Messer (Free) + Exam $404
🇹🇭 แหล่งภาษาไทย (Thai Resources)
- CyberThai / ThaiCERT / ETDA / NCSA — ข่าวสาร, แนวทาง, Training ฟรีบางครั้ง
- DEVCON Thailand / OWASP Thailand / B-Sides Bangkok — Meetup, Workshop, Conference
- YouTube Thai: **Cyber Security TH, InfoSec Thailand, Thai Hacker, P'Chai Cyber, Kru Jay IT** — เนื้อหาไทย คุณภาพดี
- Platform ภาษาไทย: **CodeMentor TH, DataRockie, LearnDeveloper** — คอร์ส Cybersecurity ภาษาไทย
แผนเรียน 3 เดือน (3-Month Sprint Plan) — ตัวอย่าง
| เดือน | Focus | Resources | Output |
| 1 | Networking + Linux Basics | Professor Messer Net+, OverTheWire Bandit, TryHackMe Network Fundamentals | เข้าใจ TCP/IP, Subnetting, Linux CLI พื้นฐาน |
| 2 | Security+ (SY0-701) | Professor Messer Sec+, Jason Dion Udemy, TryHackMe Pre-Security/Complete Beginner | สอบ Security+ ผ่าน / เข้าใจ Security Fundamentals |
| 3 | Specialization (เลือก 1) | SOC: TryHackMe SOC L1, BTLO, Let's Defend / NetSec: Fortinet NSE 4, Palo Alto EDU-210 / Cloud: AWS Security Specialty Path | Portfolio: 3-5 Lab Write-ups, GitHub Repos, LinkedIn Posts |
สรุป
**เรียน Network Security / Cybersecurity ฟรีได้จริง** — จุดสำคัญคือ **Consistency + Hands-on + Community** เริ่มจาก **Professor Messer Security+ + OverTheWire Bandit + TryHackMe** แล้วค่อยขยายตามเส้นทางที่ชอบ — **ไม่ต้องจ่ายเงินมาก (หรือเลย)** ก็สร้าง Career ได้ครับ 🚀