Internship← Cybersecurity & Ethical Hacking learning pathCybersecurity & Ethical Hacking · Module 4 of 10
Network security essentials
Protect networks with layered controls.
📖 Key ideas
- Firewalls filter traffic by rules.
- IDS/IPS detect and block suspicious traffic.
- VPNs encrypt remote connections.
- Network segmentation limits spread of attacks.
- Secure Wi-Fi with WPA3 and strong passphrases.
💡 Real-life example: Network security is a gated campus: walls (firewall), guards (IDS), and separate buildings (segments).
FirewallTraffic filter
IDS/IPSIntrusion detection/prevention
VPNEncrypted tunnel
SegmentationDividing networks