Abstract: A method of encrypting a data file includes: opening the data file; selecting, via a first user interface, a portion of the data file; encrypting, via an encryption component, the selected portion of the data file as one of a first level of encryption associated with a first authorized user and a second level of encryption associated with a second authorized user so as to create an encrypted data file; and saving the encrypted data file. The encryption component includes an out-of-band encryption key component having stored therein, a first encryption key associated with the first level of encryption and a second encryption key associated with the second level of encryption.

Abstract: A method of encrypting a data file includes: opening the data file; selecting, via a first user interface, a portion of the data file; encrypting, via an encryption component, the selected portion of the data file as one of a first level of encryption associated with a first authorized user and a second level of encryption associated with a second authorized user so as to create an encrypted data file; and saving the encrypted data file. The encryption component includes an out-of-band encryption key component having stored therein, a first encryption key associated with the first level of encryption and a second encryption key associated with the second level of encryption.

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