Patent ID: 6314520
Filing Date: 2001-11-06
Classification: G06F,H04L

Abstract:
A network interface card for use in a workstation of a networked computing system which includes a server, the network interface card comprising:address confirmation circuitry which receives a packet containing a source address value, and compares said source address value against a trusted source address value stored in said address confirmation circuitry including send address confirmation circuitry which receives a transmission packet including a send source address value to be transmitted from the workstation, and compares said send source address value with a trusted send source address value stored in a send address enforcement register; andmeans for preventing the transmission od said packet if said source address value does not match said trusted source address value, and including a send signal conditioning buffer circuit coupled to said send address confirmation circuit, said conditioning buffer circuit receives said transmission packet and transmits said transmission packet onto the network if said send source address value matches said trusted send source address value.