Network or host-based intrusion detection systems (IDS) and network or host-based intrusion prevention systems (IPS), along with firewalls, represent some of the tools available to defend networks and keep them secure. As you progress through the various labs and readings in this course, keep these fundamental security concepts in mind.
Complete the following for both IDS and IPS:
Examine two advantages and two disadvantages of each system.
Explain where you recommend using each system, or both systems, and why.
Provide a specific example of each system that meets the budget and defensive needs of a home or small office.
Include the strengths and weaknesses.
Provide a specific example of each system that meets the budget and defensive needs of a large corporate office.
Sample Answer
Intrusion Detection Systems (IDS)
An Intrusion Detection System (IDS) is a security technology that monitors network or system activities for malicious behavior or policy violations. Think of it as a vigilant security guard that observes everything but doesn't directly interfere. 🕵️
Advantages of IDS
Comprehensive Monitoring: IDSs can monitor a wide range of activities, including network traffic, system logs, and application events, providing a holistic view of potential threats. They excel at detecting zero-day attacks (previously unknown threats) and sophisticated intrusion attempts that might bypass traditional firewalls.
Forensic Analysis: When an alert is triggered, IDSs log detailed information about the suspicious activity. This data is invaluable for forensic analysis, helping security teams understand the nature of an attack, identify compromised systems, and reconstruct events for post-incident investigation.