A private cloud is using the iSCSI protocol for connection from storage to hypervisors. This connection is not encrypted currently, and the systems administrator is tasked with enabling on- the-fly en

Public Key Infrastructure (PKI) is a foundational technology that provides digital certificates, which are essential for establishing trust and performing secure key exchanges required for on-the-fly encryption protocols like IPsec. While IPsec performs the actual encryption, PKI is the underlying infrastructure that enables the secure authentication and key management necessary for IPsec to function securely over iSCSI connections.

IPSec is a protocol that provides on-the-fly encryption, but it often relies on PKI for robust authentication and secure key exchange, meaning PKI is a prerequisite for a fully secure IPSec implementation.

HTTPS is an application-layer protocol for securing web traffic and is not directly applicable to encrypting iSCSI storage traffic.

LUN encryption refers to encrypting data stored on the LUN itself (data at rest), not the data actively being transmitted over the iSCSI connection (on-the-fly encryption).