System and method for providing secure internetwork services via an assured pipeline

A server comprising:

• a processor;
• a secure operating system having a security mechanism for restricting access by processes to server resources, wherein the security mechanism includes a means for establishing an assured pipeline between processes operating in different domains;
• and
• a firewall operating on the processor, wherein the firewall interacts with the secure operating system to limit interactions between processes in different.

A secure system for transferring data between computers across a public network, the system comprising:

• a workstation connected to an internal network;
• a gateway computer connected to the internal network though a first network interface and connected to the public network though a second network interface, wherein the gateway computer includes a means for establishing an assured pipeline between the first and second network interfaces, receives data from the workstation on the first network interface, encrypts the received data, and transmits the encrypted data using the second network interface;
• and
• a remote computer connected to the external network configured to receive the encrypted data from the gateway computer.