07131140 is referenced by 28 patents and cites 65 patents.

A method for protecting firewall load balancers from a denial of service attack is provided. Packets are received by the firewall load balancer. Each packet has a source and a destination. The firewall load balancer is equipped with a connection database that can contain entries about the packets. Upon receipt of a packet, the connection database is queried to determine whether or not there is an entry for the received packet. If an entry is found in the database, the packet is forwarded to its destination. Otherwise, if the packet was received from a firewall, then a new connection entry for the packet is built and is saved to the connection database and the packet is forwarded on to its destination. If the packet does not have an entry (match) in the connection database and the packet was not received from a firewall, then the packet is forwarded to a firewall.

Title
Method for protecting a firewall load balancer from a denial of service attack
Application Number
9/788690
Publication Number
7131140 (B1)
Application Date
February 19, 2001
Publication Date
October 31, 2006
Inventor
Tzu Ming Tsang
Chapel Hill
NC, US
Sean W Hull
Raleigh
NC, US
Richard Gray
Cary
NC, US
Robert M Batz
Raleigh
NC, US
Pranav K Tiwari
Raleigh
NC, US
Michael S Sutton
Garner
NC, US
Mark Albert
Morrisville
NC, US
Louis F Menditto
Raleigh
NC, US
Gaurang K Shah
Cary
NC, US
Chris O Rourke
Apex
NC, US
Agent
Baker Botts L
Assignee
Cisco Technology
CA, US
IPC
G06F 9/00
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