US 2012/0060029 A1Published application

Method and system for dynamic secured group communication

AssigneeCisco Technology, Inc.

InventorsScott Fluhrer, Warren Scott Wainner, Sheela Rowles, Kavitha Kamarthy, Mohamed Khalid, Haseeb Niazi, Pratima Sethi

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Abstract

A system and method directed to carrying out dynamic secured group communication is provided. The method includes: obtaining a first packet that includes a first header; forming a frame that includes the first header in encrypted form; combining the first header and the frame to form a second packet and forming a second header; encapsulating the second packet with the second header to form a third packet, and communicating the third packet into the second network from the second source node for termination to the second-destination node. The first header includes a first source address of a first source node of a first network, and a first destination address of a first destination node of the first network. The second header includes a second source address of a second source node of a second network, and a second destination address of a second destination node of the second network.

Claims22

Dependent claims

One or more computer readable storage media encoded with software comprising computer executable instructions and when the software is executed operable to:

obtain a first packet that includes a first Internet Protocol (IP) header and a first payload, wherein the first IP header includes a first source address of a first source node of a first private network and a first destination address of a first destination node of the first private network, and the first payload includes a second packet that has a second IP header and a second payload, the second IP header having a second source address of a second source node of a second virtual private network partitioned from resources of, formed over, established within or via, the first private network and a second destination address of a second destination node of the second virtual private network;
encrypt the first packet to form an encrypted-subnet packet;
encapsulate the encrypted-subnet packet with a group-security association formed in accordance with a group-security policy to generate a group-encrypted packet using a tunneling protocol for tunneling the group-encrypted packet between the first source node of the first network and the first destination node of the first private network such that only the first source node of the first private network and the first destination node of the first private network are able to decipher the encrypted-subnet packet that is encapsulated in the group-encrypted packet with a message-authentication code identified for the encrypted-subnet packet, wherein the encrypted-subnet packet comprises a first security-encapsulating header configured with identifiers of the first source node, the first destination node, the second source node, and the second destination node;
replicate the group-encrypted packet at the first source node of the first private network such that the group-encrypted packet follows a multicast distribution tree in the first private network;
and
transmit the group-encrypted packet into the second virtual private network from the second source node for delivery to the second destination node.

3 more elements

One or more computer readable storage media encoded with software comprising computer executable instructions and when the software is executed operable to:

obtain a first packet that includes a first Internet Protocol (IP) header, a security-encapsulating header and a first payload, wherein the first IP header includes a first source address of a first source node of a first private network and a first destination address of a first destination node of the first network, the first payload includes a second packet that has a second IP header and a second payload, the second IP header having a second source address of a second source node of a second virtual private network partitioned from resources of, formed over, established within or via, the first private network and an encrypted second destination address of a second destination node of the second virtual private network;
encrypt the first packet to form an encrypted-subnet packet;
encapsulate the encrypted-subnet packet with a group-security association formed in accordance with a group-security policy to generate a group-encrypted packet using a tunneling protocol for tunneling the group-encrypted packet between the first source node of the first network and the first destination node of the first private network such that only the first source node of the first private network and the first destination node of the first private network are able to decipher the encrypted-subnet packet that is encapsulated in the group-encrypted packet with a message-authentication code identified for the encrypted-subnet packet, wherein the encrypted-subnet packet comprises a first security-encapsulating header configured with identifiers of the first source node, the first destination node, the second source node, and the second destination node;
replicate the group-encrypted packet at the first source node of the first private network such that the group-encrypted packet follows a multicast distribution tree in the first private network;
and
transmit the group-encrypted packet into the second virtual private network from the first private network for delivery to the second destination node.

3 more elements

One or more computer readable storage media encoded with software comprising computer executable instructions and when the software is executed operable to:

obtain a first packet that includes a first Internet Protocol (IP) header and a first payload, wherein the first IP header includes a first source address of a first source node of a first private network and a first destination address of a first destination node of the first network, the first payload includes a second packet that has a second IP header and a second payload, the second IP header having a second source address of a second source node of a second virtual private network partitioned from resources of, formed over, established within or via, the first private network and a second destination address of a second destination node of the second network;
encrypt the second packet to form a first encrypted-subnet packet;
encapsulate the first encrypted-subnet packet with a first group-security association formed in accordance with a first group-security policy to form a first group-encrypted packet using a tunneling protocol for tunneling the group-encrypted packet between the first source node of the first network and the first destination node of the first private network such that only the first source node of the first private network and the first destination node of the first private network are able to decipher the encrypted-subnet packet that is encapsulated in the group-encrypted packet with a message-authentication code identified for the encrypted-subnet packet, wherein the first encrypted-subnet packet comprises a first security-encapsulating header configured with identifiers of the first source node, the first destination node, the second source node, and the second destination node;
encrypt the first group-encrypted packet to form a second encrypted-subnet packet;
encapsulate the second encrypted-subnet packet with a second group-security association formed in accordance with a second group-security policy to form a second group-encrypted packet using a tunneling protocol for tunneling the second group-encrypted packet between the second source node of the second private network and the second destination node of the second virtual private network such that only the second source node of the second virtual private network and the second destination node of the second virtual private network are able to decipher the second encrypted-subnet packet that is encapsulated in the second group-encrypted packet with a message-authentication code identified for the second encrypted-subnet packet, wherein the second encrypted-subnet packet comprises a security-encapsulating header configured with identifiers of the second source node, the second destination node, the second source node, and the second destination node;
replicate the first group-encrypted packet at the first source node of the first private network such that the first group-encrypted packet follows a multicast distribution tree in the first private network;
and
transmit the second group-encrypted packet for delivery to the second destination node of the second virtual private network.

5 more elements

An apparatus comprising:

an input-output (I/O) interface unit;
a memory;
and
a processor coupled to the I/O interface unit and the memory and configured to:
obtain a first packet that includes a first Internet Protocol (IP) header and a first payload, wherein the first IP header includes a first source address of a first source node of a first private network and a first destination address of a first destination node of the first private network, and the first payload includes a second packet that has a second IP header and a second payload, the second IP header having a second source address of a second source node of a second virtual private network partitioned from resources of, formed over, established within or via, the first private network and a second destination address of a second destination node of the second virtual private network;
encrypt the first packet to form an encrypted-subnet packet;
encapsulate the encrypted-subnet packet with a group-security association formed in accordance with a group-security policy to generate a group-encrypted packet using a tunneling protocol for tunneling the group-encrypted packet between the first source node of the first network and the first destination node of the first private network such that only the first source node of the first private network and the first destination node of the first private network are able to decipher the encrypted-subnet packet that is encapsulated in the group-encrypted packet with a message-authentication code identified for the encrypted-subnet packet, wherein the encrypted-subnet packet comprises a first security-encapsulating header configured with identifiers of the first source node, the first destination node, the second source node, and the second destination node;
replicate the group-encrypted packet at the first source node of the first private network such that the group-encrypted packet follows a multicast distribution tree in the first private network;
and
transmit the group-encrypted packet into the second virtual private network from the second source node for delivery to the second destination node.

7 more elements

An apparatus comprising:

an input-output (I/O) interface unit;
a memory;
and
a processor coupled to the I/O interface unit and the memory and configured to:
obtain a first packet that includes a first Internet Protocol (IP) header, a security-encapsulating header and a first payload, wherein the first IP header includes a first source address of a first source node of a first private network and a first destination address of a first destination node of the first network, the first payload includes a second packet that has a second IP header and a second payload, the second IP header having a second source address of a second source node of a second virtual private network partitioned from resources of, formed over, established within or via, the first private network and an encrypted second destination address of a second destination node of the second virtual private network;
encrypt the first packet to form an encrypted-subnet packet;
encapsulate the encrypted-subnet packet with a group-security association formed in accordance with a group-security policy to generate a group-encrypted packet using a tunneling protocol for tunneling the group-encrypted packet between the first source node of the first network and the first destination node of the first private network such that only the first source node of the first private network and the first destination node of the first private network are able to decipher the encrypted-subnet packet that is encapsulated in the group-encrypted packet with a message-authentication code identified for the encrypted-subnet packet, wherein the encrypted-subnet packet comprises a first security-encapsulating header configured with identifiers of the first source node, the first destination node, the second source node, and the second destination node;
replicate the group-encrypted packet at the first source node of the first private network such that the group-encrypted packet follows a multicast distribution tree in the first private network;
and
transmit the group-encrypted packet into the second virtual private network from the first private network for delivery to the second destination node.

7 more elements

An apparatus comprising:

an input-output (I/O) interface unit;
a memory;
and
a processor coupled to the I/O interface unit and the memory and configured to:
obtain a first packet that includes a first Internet Protocol (IP) header and a first payload, wherein the first IP header includes a first source address of a first source node of a first private network and a first destination address of a first destination node of the first network, the first payload includes a second packet that has a second IP header and a second payload, the second IP header having a second source address of a second source node of a second virtual private network partitioned from resources of, formed over, established within or via, the first private network and a second destination address of a second destination node of the second network;
encrypt the second packet to form a first encrypted-subnet packet;
encapsulate the first encrypted-subnet packet with a first group-security association formed in accordance with a first group-security policy to form a first group-encrypted packet using a tunneling protocol for tunneling the group-encrypted packet between the first source node of the first network and the first destination node of the first private network such that only the first source node of the first private network and the first destination node of the first private network are able to decipher the encrypted-subnet packet that is encapsulated in the group-encrypted packet with a message-authentication code identified for the encrypted-subnet packet, wherein the first encrypted-subnet packet comprises a first security-encapsulating header configured with identifiers of the first source node, the first destination node, the second source node, and the second destination node;
encrypt the first group-encrypted packet to form a second encrypted-subnet packet;
encapsulate the second encrypted-subnet packet with a second group-security association formed in accordance with a second group-security policy to form a second group-encrypted packet using a tunneling protocol for tunneling the second group-encrypted packet between the second source node of the second private network and the second destination node of the second virtual private network such that only the second source node of the second virtual private network and the second destination node of the second virtual private network are able to decipher the second encrypted-subnet packet that is encapsulated in the second group-encrypted packet with a message-authentication code identified for the second encrypted-subnet packet, wherein the second encrypted-subnet packet comprises a security-encapsulating header configured with identifiers of the second source node, the second destination node, the second source node, and the second destination node;
replicate the first group-encrypted packet at the first source node of the first private network such that the first group-encrypted packet follows a multicast distribution tree in the first private network;
and
transmit the second group-encrypted packet for delivery to the second destination node of the second virtual private network.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/235,598Filed 19 Sep 2011
Priority: 14 Jun 2004
Published: 8 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 41/0893
Configuration management of networks or network elements: assignment of logical groups to network elements
H04L 63/0272
For separating internal from external traffic, e.g. firewalls: virtual private networks
H04L 63/0428
For providing a confidential data exchange among entities communicating through data packet networks: wherein the data content is protected, e.g.…
H04L 63/08
Network architectures or network communication protocols for network security: for authentication of entities

Family

Application10/867,266Continuation in part · filed 14 Jun 2004
Application12/210,821Continuation · filed 15 Sep 2008
Application13/235,598Continuation
Application12/210,821Continuation in part
US 2009/0034557 A1Published application
US 7,509,491 B1Related patent
US 8,036,221 B2Related patent
US 8,625,599 B2Related patent
US 2012/0060029 A1This patent

From the US filing history. Foreign family members aren’t listed.