Mirrored Traffic Definitions

Port Mirroring: Making a copy of some/all traffic crossing a specific physical port (for example, a network interface) and delivering this copy elsewhere. Usually used in conjunction with a packet analyzer.
SPAN: ‘Switch Port Analyzer’ Cisco term for port mirroring.
TAP: An old way to mirror traffic – literally tap into network cable and connect to another network interface to receive a copy (wiretap).
Aircap: Airwall Solution's internal process used to implement port mirroring.
Packet analysis / packet dissection: Parsing packets to extract analytics.
Packet brokers: Industry term for packet analysis tools and related tools to transport mirrored packet to analysis tools.
GRE: ‘Generic Routing Encapsulation’ an IP protocol used for encapsulation.
Mirror Destination: The Airwall Gateway mirrored traffic is sent to, either to a dedicated Mirror Destination group or to a packet analyzer connected as a local device to the overlay side of the Mirror Destination Airwall Gateway.
Mirror Sources: Airwall Gateways mirroring traffic and sending it to the Mirror Destination Airwall Gateway.