System and method of establishing trusted operability between networks in a network functions virtualization environment

• US 9,979,699 B1
• Filed: 07/20/2017
• Issued: 05/22/2018
• Est. Priority Date: 09/08/2015
• Status: Active Grant

• Current Assignee: T-Mobile Innovations LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Inventors: Marquardt, Ronald R., Paczkowski, Lyle W., Rajagopal, Arun
• Primary Examiner(s): Dada, Beemnet
• Assistant Examiner(s): Gundry, Stephen
• Application Number:
  US15/655,080
• Time in Patent Office: 306 Days
• CPC Class Codes: G06F 2009/4557 Distribution of virtual machine instances; Migration and load balancing
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: H04L 63/0209 Architectural arrangements, e.g. perimeter networks or demilitarized zones
• CPC Class Codes: H04L 63/0272 Virtual private networks
• CPC Class Codes: H04L 63/0807 using tickets, e.g. Kerberos cryptographic mechanisms or cryptographic arrangements for entity authentication using tickets or tokens H04L9/3213
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70

Abstract

A system for establishing a trusted end-to-end communication link between different NFV networks is disclosed. The system comprises a server operating in a trusted security zone and configured to generate and send a trust ticket, a communication request, and disable communication with the first NFV network. The system further comprises a virtual machine executing virtualized network functions and a session border controller. The session border controller is configured to receive the trust ticket, request, and trusted data from the first server; transmit the trust ticket and request to a second session border controller, wherein the trust ticket and request are transmitted to a second server associated with a second NFV network, and receive a response and second trust ticket from the second NFV network, compare the first and second trust ticket for compatibility, and transmit the trusted data if the trust tickets are compatible.

Claims

1. A system for establishing a trusted end-to-end communication link between different networks, comprising:

a first server associated with a first Network Function Virtualization (NFV) network, wherein the first server comprises a processor coupled to memory and is configured to;

generate and send a first trust ticket, a request to engage in communication with a second server associated with a second network, and trusted data from the first NFV network, wherein the first NFV network is executing in a trusted security zone that provides hardware assisted security, and wherein the second server comprises a processor coupled to memory;

disable communication with the first NFV network after the first trust ticket, the request, and the trusted data are sent;

a virtual machine stored on the first NFV network, wherein the virtual machine executes virtualized network functions and is executing in a trusted security zone; and

a session border controller executing in a trusted security zone, wherein the session border controller comprises a trust node and an application stored on the trust node, configured to;

receive the first trust ticket, the request, and the trusted data from the first server;

transmit the first trust ticket and the request to a second session border controller, wherein the second session border controller transmits the request and the first trust ticket to the second server associated with a second network;

receive a response to the request and a second trust ticket from the second server, wherein the response and second trust ticket are transmitted from the second session border controller to the first session border controller, wherein the second network is executing in a trusted security zone that provides hardware assisted security;

compare the first and second trust tickets for compatibility; and

transmit the trusted data to the second server if the first and second trust tickets are compatible.

2. The system of claim 1, wherein the first NFV network comprises one of the following group:

a compute network, a data network, a server, or other computer system in communication with a network operating in an NFV environment.

3. The system of claim 1, wherein the first session border controller, executing in a trusted security zone, transmits data to the second network by way of an outbound session router.

4. The system of claim 3, wherein the second session border controller, executing in a trusted security zone, transmits data to the first NFV network by way of an inbound session router.

5. The system of claim 1, wherein the first and second session border controller are located on the same device.

6. The system of claim 4, wherein the outbound session router and inbound session router transmit data on independent pathways.

7. The system of claim 1, wherein the second server is configured to disable communication between the second session border controller and the second server after the transmission of the trusted data is complete.

8. The system of claim 1, wherein the first trust ticket establishes the security protocol for communicating with the first NFV network and the second trust ticket establishes the security protocol for communicating with the second network.

9. A system for establishing a trusted end-to-end communication link between different networks, comprising:

a first server associated with a first Network Function Virtualization (NFV) network, wherein the first server comprises a processor coupled to memory and is configured to;

generate and send a first trust ticket, a request to engage in communication with a second server associated with a second network, and trusted data from the first NFV network, wherein the first NFV network is executing in a trusted security zone that provides hardware assisted security, and wherein the second server comprises a processor coupled to memory;

disable communication with the first NFV network after the first trust ticket, the request, and the trusted data are sent;

a virtual machine stored on the first NFV network, wherein the virtual machine executes virtualized network functions and is executing in a trusted security zone; and

a session border controller executing in a trusted security zone, wherein the session border controller comprises a trust node and an application stored on the trust node, configured to;

receive the first trust ticket, the request, and the trusted data from the first server;

transmit the first trust ticket and the request to a second session border controller, wherein the second session border controller transmits the request and the first trust ticket to the second server associated with the second network;

receive a response to the request and a second trust ticket from the second server, wherein the response and the second trust ticket are transmitted from the second session border controller to the first session border controller, wherein the second network is executing in in a trusted security zone that provides hardware assisted security;

compare the first and second trust tickets for compatibility; and

transmit, in response to a determination that the first and second trust tickets are incompatible, a message to the first server refusing to transmit the trusted data.

10. The system of claim 9, wherein the second network is a second NFV network, and wherein the first NFV network and the second NFV network comprise one of the following group:

a compute network, a data network, a server, or other computer system in communication with a network operating in an NFV environment.

11. The system of claim 9, wherein the first session border controller, executing in a trusted security zone, transmits data to the second network by way of an outbound session router.

12. The system of claim 11, wherein the second session border controller, executing in a trusted security zone, transmits data to the first NFV network by way of an inbound session router.

13. The system of claim 9, wherein the first and second session border controller are located on the same device.

14. The system of claim 12, wherein the outbound session router and inbound session router transmit data on independent pathways.

15. The system of claim 9, wherein the first session border controller is configured to disable communication with the second session border controller and the second server after refusing transmission of the trusted data.

16. The system of claim 9, wherein the first NFV network provides core network services to a radio access network that provides communication service to user equipment.

17. A method of establishing a trusted end-to-end communication link between different networks, comprising:

receiving, by a first session border controller, from a first server associated with a first Network Function Virtualization (NFV) network, a first ticket, a request to engage in communication with a second server associated with a second network, and trusted data from the first NFV network, wherein the first NFV network is executing in a trusted security zone that provides hardware assisted security;

disabling communication between the first session border controller and the first server after the first trust ticket, the request, and the trusted data have been sent;

transmitting, by the first session border controller executing in a trusted security zone, the first trust ticket and the request to a second session border controller;

transmitting, by the second session border controller executing in a trusted security zone, the first trust ticket and the request to the second server;

receiving, by the second session border controller executing in a trusted security zone, a second trust ticket and a response to the request for communication from the first server from the second server, wherein the second network is executing in a trusted security zone that provides hardware assisted security;

transmitting, by the second session border controller, the second trust ticket and the response to the first session border controller;

comparing, by the first session border controller, the first and second trust tickets for compatibility; and

transmitting, by the first session border controller executing in a trusted security zone, the trusted data to the second server associated with the second network responsive to the first and second trust tickets being compatible.

18. The method of claim 17, wherein the second server disables communication between the second session border controller and the second server after transmission of the trusted data is complete.

19. The method of claim 17, further comprising sending, by the first session border controller, a message to the first server responsive to the first and second trust tickets being incompatible, wherein the message indicates that the first and second trust tickets are incompatible, and wherein the first session border controller refuses to transmit the trusted data responsive to the first and second trust tickets being incompatible.

20. The method of claim 17, wherein the first session border controller transmits the first trust ticket and the request through an outbound session router to the second session border controller, and wherein the second session border controller transmits the second trust ticket and the response through an inbound session router to the first session border controller.