A technique used to reduce network overhead, especially in wide area networks
Some network protocols
send frequent packets for management purposes. These can be routing
updates or keep-alive messages. In a WAN
this can introduce significant overhead, due to the typically smaller bandwidth
of WAN connections.
Spoofing reduces the required bandwidth by having devices, such as bridges
, answer for the remote devices. This fools (spoofs) the LAN
device into thinking the remote LAN is still connected, even though it's not. The spoofing saves the WAN bandwidth, because no packet is ever sent out on the WAN.
today do not yet accommodate spoofing easily.
["Network Spoofing" by Jeffrey Fritz, BYTE, December 1994, pages 221 - 224].