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Cybersecurity vocabulary · Network Security

Intrusion detection system

Meaning in cybersecurity, with examples

nounCommon term

In cybersecurity, intrusion detection system means: A tool that monitors network traffic or system activity for signs of attacks or policy violations and raises an alert when it finds them.

In Turkish: saldırı tespit sistemi, IDS

How it is used

Usually called an IDS. An IDS only detects and alerts, while an intrusion prevention system (IPS) can also block traffic. Teams tune IDS rules to reduce false positives. Snort and Suricata are well-known open-source examples.

Example sentences

  1. The intrusion detection system raised an alert for unusual traffic from a printer.

  2. We placed the intrusion detection system between the DMZ and the internal network.

Common collocations

  • network-based IDS
  • host-based IDS
  • IDS rule
  • IDS/IPS
  • tune the IDS
  • firewallA hardware device or piece of software that checks network traffic and allows or blocks it according to a set of security rules.
  • alertA notification from a security tool saying that something suspicious or important has happened and may need a person to look at it.
  • false positiveAn alert or test result that wrongly reports a threat or vulnerability when nothing harmful is actually there.
  • SIEMSecurity information and event management: a platform that collects logs from many systems, correlates them and raises alerts about possible attacks.

This word in other fields

The same English word can have a different meaning in another field:

More terms: Network Security

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