A trusted workstation includes a network interface card (NIC) with trusted computing base (TCB) extensions that provide for securely booting the workstation and performing subsequent receive and transmit packet filtering in support of a network's system architecture requirements. The NIC includes a send...http://www.google.co.uk/patents/US6477648?utm_source=gb-gplus-sharePatent US6477648 - Trusted workstation in a networked client/server computing system
