Which of the following technologies could perform these steps automatically in the future?

A web server is under a denial of service (DoS) attack. The administrator reviews logs and creates an access control list (ACL) to stop the attack.

Which of the following technologies could perform these steps automatically in the future?
A . Intrusion prevention system (IPS)
B. Intrusion detection system (IDS)
C. Blacklisting
D. Whitelisting

Answer: B

Explanation:

Reference: https://www.ciscopress.com/articles/article.asp?p=345618