Free Course — No signup required

Learn Network Security
in 5 Days

Design and defend networks — firewalls, IDS/IPS, VPN, monitoring, and incident response.

5 lessons
Self-paced
~60 min/day
Free forever
No account needed
Start Day 1 — Free → See what's covered
What you'll learn

Network Security in 5 Days

Free 5-day network security course. Firewalls, IDS/IPS, VPN architecture, traffic monitoring, and incident response.

  • Configure stateful firewalls with iptables/nftables and understand firewall rule order
  • Deploy Snort/Suricata IDS and write custom rules to detect specific attack patterns
  • Set up a site-to-site VPN with WireGuard and understand certificate-based auth
  • Capture and analyze traffic with Wireshark to detect anomalies and attacks
  • Follow an incident response playbook from detection through containment and recovery
iptables
firewalls
Suricata
IDS/IPS
WireGuard
VPN
$0
cost
5-Day Curriculum

Every lesson builds on the last.
No theory without practice.

01
Firewall Fundamentals
Stateful inspection, iptables, nftables, rule order, DMZ
iptablesnftablesstatefulDMZ
→
02
IDS and IPS
Snort, Suricata, rule writing, alert tuning, evasion
SnortSuricatarulessignatures
→
03
VPN Architecture
WireGuard, IPSec, SSL VPN, zero-trust network access
WireGuardIPSeczero-trustcertificates
→
04
Traffic Analysis
Wireshark, tcpdump, NetFlow, anomaly detection
WiresharktcpdumpNetFlowanomaly
→
05
Incident Response
IR playbooks, containment, forensics, recovery, lessons learned
IRcontainmentforensicsrecovery
→
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Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems at scale. Every lesson has concrete examples and exercises you can finish in under an hour.

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