Which of the following is designed to detect unwanted attempts at accessing, manipulating, and disabling of computer systems through the Internet?

DAS (Direct Attached Storage) is a storage configuration, unrelated to detecting security threats.

IPsec (Internet Protocol Security) is a suite of protocols used for securing IP communications by authenticating and encrypting each IP packet, not for detecting intrusions.

An Intrusion Detection System (IDS) is a security technology that monitors network traffic and/or system activities for suspicious patterns or known attack signatures. Its primary purpose is to detect unauthorized access, manipulation, or attempts to disable systems, generating alerts when such activities are identified.

An ACL (Access Control List) is a set of rules that governs access to network resources or files, acting as a preventative measure, but it does not actively detect intrusion attempts.