07533409 is referenced by 62 patents and cites 60 patents.

Methods, apparatus, and systems are provided for processing packets between a first and a second network. When a packet is received from the first network, information for routing the first packet is identified. Based on a first set of rules for processing the first packet and the information for routing the first packet, a second packet encapsulated within the first packet is detected. In the first packet, information for routing the second packet is identified based on which a second set of rules for processing the second packet and an index are determined. The second packet is then filtered based on the index, the second set of rules, and the information for routing the second packet. In addition, the index is associated with any additional packets encapsulated within the second packet. The additional packets are also filtered based on the index and the second set of rules.

Title
Methods and systems for firewalling virtual private networks
Application Number
10/345145
Publication Number
7533409 (B2)
Application Date
January 16, 2003
Publication Date
May 12, 2009
Inventor
Samuel Bendinelli
Princeton
NJ, US
Christopher Macey
Red Bank
NJ, US
John Keane
Metuchen
NJ, US
Agent
Finnegan Henderson Farabow Garrett & Dunner
Assignee
Corente
NJ, US
IPC
G06F 21/20
View Original Source