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Intrusion Detection System IDS

An Intrusion Detection System (IDS) is a cybersecurity tool that monitors networks for unauthorized activities and alerts administrators. It can be host-based or network-based, utilizing various detection methods such as signature and anomaly-based approaches. While IDS enhances security by detecting threats and providing forensic support, it has limitations like false positives and cannot block attacks.

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12 views3 pages

Intrusion Detection System IDS

An Intrusion Detection System (IDS) is a cybersecurity tool that monitors networks for unauthorized activities and alerts administrators. It can be host-based or network-based, utilizing various detection methods such as signature and anomaly-based approaches. While IDS enhances security by detecting threats and providing forensic support, it has limitations like false positives and cannot block attacks.

Uploaded by

akadvserver
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Intrusion Detection System (IDS)

1. Introduction

An Intrusion Detection System (IDS) is a cybersecurity mechanism that monitors and detects unauthorized or

anomalous activities in a network or system.

2. Definition of IDS

An IDS is a software application or hardware device that monitors systems for malicious activities or policy

violations. Alerts are sent to administrators or logged for analysis.

3. Objectives of IDS

- Detect unauthorized access

- Identify internal/external threats

- Alert admins in real time

- Log events for forensic use

4. Types of IDS

Based on environment:

- Host-based IDS (HIDS)

- Network-based IDS (NIDS)

Based on detection:

- Signature-based

- Anomaly-based

- Hybrid

5. Components of IDS

- Sensor: Data collection

- Analyzer: Analyzes data

- Signature DB: Attack patterns

- Alert system
Intrusion Detection System (IDS)

- Admin interface

6. Architecture

Network -> Sensor -> Detection Engine -> Alert System -> Administrator

7. IDS vs Firewall

IDS detects threats; firewall blocks them.

IDS is passive; firewall is active.

IDS works internally; firewall protects perimeters.

8. Applications

- Network monitoring

- Breach detection

- Policy enforcement

- Insider threat detection

- Forensic support

9. Advantages

- Early threat detection

- Data protection

- Incident response

- Compliance support

- Audit logs

10. Limitations

- False positives

- Cannot block attacks

- Signature updates needed


Intrusion Detection System (IDS)

- Encrypted traffic issues

11. Real-world Examples

- Snort, Suricata, OSSEC, Cisco Secure IDS

12. Best Practices

- Update signatures

- Combine with other tools

- Adjust alerts

- Monitor logs

- Penetration testing

13. Conclusion

IDS is vital in cybersecurity. It helps in detecting and responding to threats, enhancing overall defense

despite not blocking attacks directly.

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