ESP

Encapsulating Security Payloads, used as part of IPSec.

Ethernet

Physical and link-level communications mechanism defined by the IEEE 802.3 family of standards.

Ethernet address

The unique hardware address assigned to a computer system or interface board when it is manufactured. See MAC address.

Ethernet switch

A unit that redirects packets from input ports to output ports. It can be a component of the Sun Ray interconnect fabric.