System and method of traffic inspection and stateful connection forwarding among geographically dispersed network appliances organized as clusters
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United States of America Patent
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Mar 6, 2012
Issued Date -
N/A
app pub date -
Aug 6, 2007
filing date -
Aug 6, 2007
priority date (Note) -
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Abstract
A peering relationship among two or more network appliances is established through an exchange of control messages among the network appliances. The peering relationship defines a cluster of peered network appliances, and at each network appliance of the cluster traffic flow state information for all the network appliances of the cluster is maintained. Network traffic associated with traffic flows of the network appliances of the cluster is managed according to the state information for the traffic flows. This managing of the network traffic may include forwarding among the network appliances of the cluster (i.e., to those of the appliances handling the respective flows) at least some of the network traffic associated with one or more of the traffic flows according to the state information for the one or more traffic flows. The traffic flows may be TCP connections or UDP flows.
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