What factors should you consider when designing an IDS installation? Check all that apply. Storage capacity OS types in use Internet connection speed Traffic bandwidth What is the difference between an Intrusion Detection System and an Intrusion Prevention System? An IDS can alert on detected attack traffic, but an IPS can actively block attack traffic. They are the same thing. An IDS can detect malware activity on a network, but an IPS can’t An IDS can actively block attack traffic, while an IPS can only alert on detected attack traffic. What factors would limit your ability to capture packets? Check all that apply. Network interface not being in promiscuous or monitor mode Anti-malware software Encryption Access to the traffic in question 3.
The Correct Answer and Explanation is:
Correct Answers:
1. What factors should you consider when designing an IDS installation?
✔ Storage capacity
✔ OS types in use
✔ Traffic bandwidth
(Not correct: ✖ Internet connection speed)
2. What is the difference between an Intrusion Detection System and an Intrusion Prevention System?
✔ An IDS can alert on detected attack traffic, but an IPS can actively block attack traffic.
3. What factors would limit your ability to capture packets?
✔ Network interface not being in promiscuous or monitor mode
✔ Anti-malware software
✔ Encryption
✔ Access to the traffic in question
🧠 Detailed Explanation:
1. IDS Installation Factors:
When designing an IDS (Intrusion Detection System), you need to ensure that the system can effectively monitor and analyze network traffic for signs of malicious activity.
- Storage capacity is critical because IDS logs and captures large volumes of traffic data. Insufficient storage can result in lost logs or missed alerts.
- OS types in use matter because different operating systems may have unique vulnerabilities and network behaviors that the IDS must be configured to understand.
- Traffic bandwidth affects how much data the IDS must process in real-time. High bandwidth may require a more powerful IDS to avoid packet drops.
- Internet connection speed is not a direct concern, as IDS monitors internal traffic, not just traffic to/from the internet.
2. IDS vs. IPS:
The key difference lies in their response:
- An IDS is a passive monitoring system. It detects suspicious activity and generates alerts but does not take direct action.
- An IPS is an active system. It can detect and immediately block suspicious traffic, preventing the attack from reaching its target.
Saying they are the same is incorrect, and both can detect malware, but only an IPS can automatically respond.
3. Packet Capture Limitations:
To analyze network traffic, you must be able to see the packets:
- If your network interface isn’t in promiscuous or monitor mode, it won’t capture all packets.
- Encryption prevents you from seeing the contents of packets unless you have decryption keys.
- Anti-malware software might interfere with packet capture tools or block access.
- You must have access to the traffic—such as through a SPAN port or TAP device—without which you cannot capture any data.