US 8,266,689 B2Granted

Bilateral communication using multiple one-way data links

AssigneeOwl Computing Technologies, Inc.

InventorsJeffrey Charles Menoher, James Hope, Ronald Mraz

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Abstract

A bilateral data transfer system comprising a first node, a second node, a first one-way link for unidirectional transfer of first data from the first node to the second node, and a second one-way link for unidirectional transfer of second data from the second node to the first node, wherein the unidirectional transfer of the first data across the first one-way link and the unidirectional transfer of the second data across the second one-way link are independently administered by the bilateral data transfer system. Under such bilateral data transfer system, each of the one-way data links may be subject to separately administered security restrictions and data filtering processes. Hence, it enables secure bilateral communications across different network security domains.

Claims21

Dependent claims

A bilateral data transfer system comprising:

a first node;
a remote terminal client connected to the first node;
a second node;
a remote terminal server connected to the second node;
a first one-way link for unidirectional transfer of first data from the first node to the second node;
and
a second one-way link for unidirectional transfer of second data from the second node to the first node,
wherein the first node comprises:
one or more processors;
a memory storing a first data sending application, a second data receiving application and a first session managing application;
and wherein the one or more processors are configured to execute:
the first data sending application for sending the first data to the second node over the first one-way link;
the second data receiving application for receiving the second data from the second node over the second one-way link;
and
the first session managing application for blocking the first data from the second data receiving application and for blocking the second data from the first data sending application, and
wherein the second node comprises:
one or more processors;
a memory storing a first data receiving application, a second data sending application and a second session managing application;
wherein the one or more processors are configured to execute:
the first data receiving application for receiving the first data from the first node over the first one-way link;
the second data sending application for sending the second data to the first node over the second one-way link;
and
the second session managing application for blocking the first data from the second data sending application and for blocking the second data from the first data receiving application, so that the unidirectional transfer of the first data across the first one-way link and the unidirectional transfer of the second data across the second one-way link are independently administered by the bilateral data transfer system,
wherein:
the first data comprises a request for data from the remote terminal client;
the second data comprises requested data from the remote terminal server;
the first session managing application is configured to route the first data from the remote terminal client only to the first data sending application and configured to route the second data from the second data receiving application only to the remote terminal client;
and
the second session managing application is configured to route the first data from the first data receiving application only to the remote terminal server and configured to route the second data from the remote terminal server only to the second data send application.

26 more elements

A non-transitory machine readable medium having instructions stored on at least one of a first node and a second node, wherein the first node and the second node are interconnected by a first one-way link for unidirectional transfer of first data from the first node to the second node and a second one-way link for unidirectional transfer of second data from the second node to the first node, the instructions, when executed by the first node, causing the first node to:

execute a first data sending application to send the first data to the second node over the first one-way link;
execute a second data receiving application to receive the second data from the second node over the second one-way link;
and
execute a first session managing application to block the first data from the second data receiving application and to block the second data from the first data sending application, further the instructions, when executed by the second node, causing the second node to:
execute a first data receiving application to receive the first data from the first node over the first one-way link;
execute a second data sending application to send the second data to the first node over the second one-way link;
and
execute a second session managing application to block the first data from the second data sending application and to block the second data from the first data receiving application, so that the unidirectional transfer of the first data across the first one-way link and the unidirectional transfer of the second data across the second one-way link are independently administered by the instructions,
wherein:
the first data comprises a request for data from a remote terminal client connected to the first node;
the second data comprises requested data from a remote terminal server connected to the second node;
the first node comprises a first software zone comprising the first data sending application, a second software zone comprising the second data receiving application, and a third software zone comprising the first session managing application;
the second node comprises a fourth software zone comprising the second data sending application, a fifth software zone comprising the first data receiving application, and a sixth software zone comprising the second session managing application;
and
each of the software zones is capable of separate administration.

12 more elements

A bilateral data transfer system comprising:

a first node;
a second node;
a first one-way link for unidirectional transfer of first data from the first node to the second node;
and
a second one-way link for unidirectional transfer of second data from the second node to the first node,
wherein the first node comprises:
one or more processors;
a memory storing a first data sending application, a second data receiving application and a first session managing application;
and wherein the one or more processors are configured to execute:
the first data sending application for sending the first data to the second node over the first one-way link;
the second data receiving application for receiving the second data from the second node over the second one-way link;
and
the first session managing application for blocking the first data from the second data receiving application and for blocking the second data from the first data sending application, and
wherein the second node comprises:
one or more processors;
a memory storing a first data receiving application, a second data sending application and a second session managing application;
wherein the one or more processors are configured to execute:
the first data receiving application for receiving the first data from the first node over the first one-way link;
the second data sending application for sending the second data to the first node over the second one-way link;
and
the second session managing application for blocking the first data from the second data sending application and for blocking the second data from the first data receiving application, so that the unidirectional transfer of the first data across the first one-way link and the unidirectional transfer of the second data across the second one-way link are independently administered by the bilateral data transfer system,
wherein:
the first data comprises a request for data from a remote terminal client;
the second data comprises requested data from a remote terminal server;
the first node comprises a first software zone comprising the first data sending application, a second software zone comprising the second data receiving application, and a third software zone comprising the first session managing application;
the second node comprises a fourth software zone comprising the second data sending application, a fifth software zone comprising the first data receiving application, and a sixth software zone comprising the second session managing application;
and
each of the software zones is capable of separate administration.

25 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/167,932Filed 24 Jun 2011 · continuation
Priority: 19 Jul 2007
Published: US 2011/0252116 A113 Oct 2011
Granted: 11 Sep 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 67/00
Network arrangements or protocols for supporting network services or applications
H04L 63/0209
For separating internal from external traffic, e.g. firewalls: architectural arrangements, e.g. perimeter networks or demilitarized zones
H04L 63/0227
For separating internal from external traffic, e.g. firewalls: filtering policies
H04L 63/105
For controlling access to devices or network resources: multiple levels of security