CYB236 Chapter 6: Signature Detection Techniques
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Questions and Answers

What is the purpose of the SNORT rule designed to prevent ICMP floods?

  • To prevent DoS attacks by limiting ICMP packets (correct)
  • To detect brute force attacks on SSH
  • To block all incoming ICMP traffic
  • To detect oversized ICMP packets

    • What is the threshold for ICMP packets in the SNORT rule designed to prevent ICMP floods?

  • 1000 packets in 5 seconds
  • 300 packets in 1 second
  • 500 packets in 3 seconds (correct)
  • 200 packets in 2 seconds

    • What is the characteristic of a Ping of Death attack?

  • Sending ICMP packets with a spoofed source IP
  • Sending fast-paced ICMP packets
  • Sending multiple small ICMP packets
  • Sending a single oversized ICMP packet (correct)

    • What is the purpose of the SNORT rule designed to detect brute force attacks on SSH?

    <p>To detect excessive login attempts on SSH</p> Signup and view all the answers

    What is the threshold for login attempts in the SNORT rule designed to detect brute force attacks on SSH?

    <p>5 attempts in 60 seconds</p> Signup and view all the answers

    What is the sid of the SNORT rule designed to detect Ping of Death attacks?

    <p>1111111</p> Signup and view all the answers

    What is the name of one of the intrusion detection datasets mentioned?

    <p>DARPA/KDD Cup 99</p> Signup and view all the answers

    What is a signature in the context of Signature-Based IDS Detection?

    <p>A pattern within a packet or a series of packets in network traffic that corresponds to a known threat</p> Signup and view all the answers

    What is the purpose of the SNORT rule shown in the example?

    <p>To detect a TCP SYN flood attack to a web server</p> Signup and view all the answers

    What is the condition for the SNORT rule to issue an alert?

    <p>If a client sends more than 100 TCP SYN requests to the server within 10 seconds</p> Signup and view all the answers

    What is the port number used by the web server in the SNORT rule example?

    <p>443</p> Signup and view all the answers

    What is the function of the 'detection_filter' in the SNORT rule?

    <p>To track the traffic by destination IP address and count the number of requests</p> Signup and view all the answers

    What is the advantage of using a Signature-Based IDS Detection process?

    <p>It can detect known threats</p> Signup and view all the answers

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