Patent ID: 8925064

Claim:
A single system configured to support both a high domain security level and a low domain security level, the system comprising: a computer comprising: a first virtual machine (VM1) that is minimally configured to host a first firewall, a first network address translator (NAT), and a first network interface card (NIC) which is connected a low domain wide area network; a first virtual switch (VSW1) connected to the VM1; a second virtual machine (VM2) connected to the VSW1, wherein the VM2 is configured to process all low domain information; a third virtual machine (VM3) connected to the VSW1, wherein the VM3 is minimally configured to host a second firewall and a second NAT; a second virtual switch (VSW2) connected to the VM3; and a fourth virtual machine (VM4) connected to the VSW2, wherein the VM4 is configured to process all high domain information, such that the computer can operate in both the high and low domain security levels and connect to the low domain wide area network with a single NIC.