Network Intrusion Detection (IDS)
Learn the principles of Intrusion Detection Systems (IDS) and how they monitor network traffic for malicious activities.
What is an IDS?
Welcome! In this lesson, we'll explore Intrusion Detection Systems (IDS). An IDS is a security tool that monitors network traffic or system activities for suspicious behavior and known threats.
Think of it as a security guard constantly watching for unusual activity, but not necessarily stopping it.
IDS: Detect vs. Prevent
It's important to differentiate IDS from firewalls. A firewall acts as a gatekeeper, blocking unwanted traffic based on predefined rules (prevention).
An IDS, however, is like a surveillance camera. It observes and alerts you to potential threats, but doesn't actively block them. It's about detection, not prevention.
All lessons in this course
- Advanced Firewall Rules (nftables)
- VPN Concepts & Configuration
- Network Intrusion Detection (IDS)
- SSH Hardening and Key-Based Authentication