13 Questions
What is a signature in the context of signature-based IDS?
A pattern within a packet or a series of packets that corresponds to a known threat
What is the purpose of the SNORT rule provided in the text?
To detect and alert on TCP SYN flood attacks on a web server
How many TCP SYN requests must a client send to the server within 10 seconds to trigger the SNORT rule?
100
What is the advantage of using signature-based IDS?
It can detect known threats with high accuracy
What is the disadvantage of using signature-based IDS?
It can only detect known threats
What is the purpose of the 'sid' parameter in the SNORT rule?
To specify the signature ID
What type of attack is caused by an attacker deliberately sending an IP packet larger than the 65,536 bytes allowed by the IP protocol?
Ping of Death attack
What is the main purpose of the SNORT rule designed to prevent ICMP floods?
To prevent ICMP floods by tracking the number of packets sent
What is the minimum number of ICMP packets required to trigger the ICMP flood attack detection?
500
What is the time period within which the ICMP flood attack detection rule counts the number of ICMP packets?
3 seconds
What is the purpose of the Brute Force attack detection rule?
To detect brute force login attempts on SSH
What is the minimum number of login attempts required to trigger the Brute Force attack detection?
5
What is the time period within which the Brute Force attack detection rule counts the number of login attempts?
60 seconds
Test your knowledge of signature detection techniques in IDS, including the definition of a signature, advantages and disadvantages, and known attacks. Learn about the detection process and how to identify threats.
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