Network Security

Packets, firewalls, hardening.

Network architecture, protocols, Wireshark, firewalls, IDS/IPS, VPN, wireless, assessment and hardening — lab networks only.

Level: Intermediate
Duration: 8 weeks
Modules: 2 modules · 14 lessons
Learning method: Lessons + labs

Preview first lesson

What you will learn

Read packet captures with purpose
Explain firewall and IDS roles
Outline a network hardening checklist

Course curriculum

Expand each module for lessons, progress, and labs assigned to that module — not a flat topic dump.

Module 1

Architecture & protocols

Switching, routing, protocols, packets.

0/6 lessons

Lessons

1. Network Architecturepreview~20 min
2. Switching and Routing~20 min
3. Network Protocols~20 min
4. Packet Analysis~20 min
5. Wireshark~20 min
6. TCP/IP Analysis~20 min

Module labs

Enrol to unlock full lessons and track module progress.

Module 2

Defense & assessment

Firewalls, IDS/IPS, VPN, wireless, VA, hardening, monitoring.

0/8 lessons

Lessons

1. Firewall Configuration~20 min
2. IDS and IPS~20 min
3. VPN Technologies~20 min
4. Wireless Network Security~20 min
5. Network Vulnerability Assessment~20 min
6. Network Penetration Testing~20 min
7. Network Hardening~20 min
8. Network Monitoring~20 min

Module labs

Enrol to unlock full lessons and track module progress.

OSINT in this course

Open-source intelligence is taught here — not only under Resources. Use authorized, public sources; no doxing or harassment; document sources and timestamps.

Domain and DNS intelligence — DNS maps, certificates, historical records, and shadow DNS.
Public infrastructure intelligence — Internet-wide exposure views for owned assets and scoped assessments.

Full OSINT center → · Investigation playbook

Inside this course

Labs · Quizzes · Certificate

Labs below are curated for this syllabus (shared engine, course-specific assignments). They unlock with enrol; quizzes match course topics; finish ≈90%+ to claim a CYNARKS Academy certificate.

Course labs

8 assigned labs · free with this course enrol

Port RiddleUnlock via course or plan
Pick the SYN PacketUnlock via course or plan
Mail Server RecordUnlock via course or plan
DNSSEC GoalUnlock via course or plan
Firewall Rule & Noisy ScannerFree lab
WPA3 vs WPA2Unlock via course or plan
DMARC AlignmentUnlock via course or plan
Handshake OrderUnlock via course or plan

Track quiz

302 questions matched to this course topics

Knowledge checks for this track only — not a separate global quiz menu.

Start track quiz

CYNARKS certificate

Educational completion certificate · verify by ID

Your progress: 0% · enrol to unlock claim

Enrol in this course first.