Question: In a Lawful Interception (LI) scenario, as per 3GPP security standards, what is the primary purpose of using IPsec for delivering Conf-CC-PDU in the Law Enforcement Monitoring Facility (LEMF)?
Option 1: To ensure confidentiality and integrity of intercepted data during transmission to the LEMF.
Option 2: To correlate Communication Content (CC) with Identifying Information (IRI) without encryption.
Option 3: Solely for collecting and storing incoming packets based on sequence numbers and timestamps.
Option 4: To manage the handover interface for non-LI related communications.
Explanation: IPsec (Internet Protocol Security) is utilized to secure IP communications by encrypting each packet, ensuring confidentiality and integrity. In the context of Lawful Interception, particularly for delivering Conf-CC-PDU (Conference Content Control Protocol Data Unit), IPsec's primary role in the LEMF is to safeguard the intercepted data during transmission, maintaining its security and adherence to privacy regulations. This aligns with the fundamental principles of secure data handling in sensitive legal and security operations.