🌐 IDS vs. IPS: The Security Watchdog vs. The Armed Guard

How do enterprise networks detect cyber threats and automatically block intruders before they can cause damage? Through IDS (Intrusion Detection System) and IPS (Intrusion Prevention System).

Here are the key points:

🔹 1. What is IDS (Intrusion Detection System)?

The Watchdog / CCTV Camera: A passive monitoring system that inspects network traffic for suspicious activity or known attack signatures.

Action: It does not block traffic itself. When it spots a threat, it triggers an alert or log notification to warn the security operations team.

🔹 2. What is IPS (Intrusion Prevention System)?

The Armed Guard / Active Shield: An active inline security system that sits directly in the path of network traffic.

Action: It not only detects threats like an IDS but instantly takes automated preventive action—dropping malicious packets, terminating connections, or blocking the attacker's IP address on the spot.

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