System and Methods for Dynamic Network Address Modification

• US 20140317312A1
• Filed: 02/20/2014
• Published: 10/23/2014
• Est. Priority Date: 02/20/2013
• Status: Active Grant

• Current Assignee: Ip Technology Labs, LLC
• Original Assignee: Ip Technology Labs, LLC
• Inventors: Mitchell, Gary, Whittle, Scott, Quasebarth, Kurt
• Granted Patent: US 9,391,881 B2
• Time in Patent Office: Days
• US Class Current: 709/244
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 12/4641 Virtual LANs, VLANs, e.g. virtual private networks [VPN] LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272
• CPC Class Codes: H04L 12/4683 characterized by the protocol used
• CPC Class Codes: H04L 45/306 Route determination based on the nature of the carried application
• CPC Class Codes: H04L 45/42 Centralised routing
• CPC Class Codes: H04L 61/106 across networks, e.g. mapping telephone numbers to data network addresses
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04L 61/2592 using tunnelling or encapsulation
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/4541 Directories for service discovery
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 61/5076 Update or notification mechanisms, e.g. DynDNS
• CPC Class Codes: H04L 63/0272 Virtual private networks

Abstract

The invention presented herein permits split-routing to occur without any changes, modifications, or configuration of the requesting host, network stacks, network architectures and routing and forwarding behavior. The invention is carried out by way of a Module that intercepts the normal and standard DHCP communication between a requesting device and a DHCP server, and substitutes the elements within the server response with the Module'"'"'s own predefined elements. These substitute elements leverage the behavior of standard protocols to gain desired device network behavior.

Claims

1. A method for permitting split-routing to occur without any changes, modifications or configuration of a requesting host, network stack, network architecture, and routing and forwarding behavior, the method comprising:

presenting a module to intercept the normal and standard DHCP communication between a requesting device and a DHCP server, wherein the module is configured for substituting the elements within the server response with the module'"'"'s own elements, thereby directing traffic through an alternate route.

2. The method of claim 1, wherein the module is configured for substituting an IP address of the issuing DHCP server with an IP address of a local terminal.

3. The method of claim 1, wherein the module further comprises an intercept sub-module configured to manage the DHCP information between networks.

4. The method of claim 1, wherein the module further comprises a substitutions elements sub-module configured to obtain and establish the network items to be substituted.

5. The sub-module of claim 4, wherein the sub-module is configured to obtain substitution items statically, manually or dynamically.

6. The method of claim 1, wherein the module further comprises a substitutions elements sub-module configured to perform the operations of deconstructing, substituting and rebuilding packets.

7. The method of claim 1, wherein the module is configured for forwarding resulting traffic on from the local terminal to a predetermined interface based on a destination of that address.

8. A computer software product for use with a computer, said computer software product comprising,

a module constructed and arranged to be embedded into a computer program, wherein the module is operable to provide substitution addressing elements to a DHCP-requesting device.

9. A computer-readable storage medium storing an executable computer program module for enabling substituting network addressing elements, the module comprising:

an intercept sub-module configured to manage DHCP information between networks;

an elements sub-module configured to obtain and establish the network items to be substituted; and

a substitution sub-module configured to perform the operations of deconstructing, substituting, and rebuilding packets with predefined information, thereby allowing the module to manage the flow of network traffic as it seeks egress to an alternate network.