At&t Intellectual Property I, L.p.

At+t Corp.

Nicolas Grisi

Jean-François Le Pennec

Jean-Marie Sommerlatt

Aurélien Bruno

Jean-Francois Le Pennec

Aurelien Bruno

Olivier Hericourt

Didier F Giroir

Richard Duwiquet

The present invention includes a method, a system, and a computer readable medium for establishing a connection between hosts in a computer network with the connection configured for symmetrical forward and reverse routing. The method uses the following steps. First, a first host local routing table to route a packet from a first host to a first gateway according to a routing protocol. Next, the first gateway local routing table routes the packet from the first gateway to a first access router. After that, a first access router local routing table routes the packet from the first access router to a second access router. Then, a second access router local routing table routes the packet from the second access router to a second gateway. Finally, a second gateway local routing table routes the packet from the second gateway router to a second host.

Method and system for symmetric routing

A method and apparatus for flow based load balancing are disclosed. For example, the present method receives at least one packet from a flow. If the flow has not being previously classified, then the flow is classified based on the characteristics of the flow. Once classified, the present method matches the flow to at least one matched path from a plurality of available paths in accordance with the characteristics of the flow and characteristics of the at least one matched path. Once matched, the present method forwards the packet from the flow to the at least one matched path for processing.

Method and apparatus for providing flow based load balancing

Described is a system and method for receiving an electronic mail including an attachment file and separating the attachment file from the electronic mail. The attachment is then sent to a remote source and the attachment file is replaced with a substitute file including identifying data for retrieving the attachment file from the remote source. The electronic mail with the substitute file is then forwarded to a receiver.

System and method for an electronic mail attachment proxy

Firewall system for interconnecting a first IP network () to a second IP network (), these networks belonging to two different entities having each a different administration wherein any data packet transmitted/received by the first IP network is filtered by using a first firewall function and any data packet transmitted/received by the second IP network is filtered by using a second firewall function. The system comprises essentially a single firewall device () including filtering means () performing both first firewall function and second firewall function, a console port () enabling the administrator in charge of each IP network to enter filtering rules for updating the associated firewall function and control means () interconnecting the console port and the filtering means for transmitting thereto the filtering rules so that each administrator may independently manage the system from the console port.

Firewall system for interconnecting two IP networks managed by two different administrative entities

Method of gaining secure access from a host () to Intranet resources provided by at least a content server () in a data transmission system wherein the host is connected to the content server through a gateway (). Such a method consists in generating and sending at predetermined transmission instants from either the host or the gateway verification messages wherein each verification message contains a signature which depends upon the data exchanged between the host and the gateway since the preceding verification message, the host and the gateway also called peer devices having at their disposal same algorithm defining which of them sends a verification message at each of the predetermined instants.

Method of gaining secure access to intranet resources

Method of gaining secure access from a host () to Intranet resources provided by at least a content server () in a data transmission system wherein the host is connected to the content server through a gateway (). Such a method consists in generating and sending at predetermined transmission instants from either the host or the gateway verification messages wherein each verification message contains a signature which depends upon the data exchanged between the host and the gateway since the preceding verification message, the host and the gateway also called peer devices having at their disposal a same algorithm defining which of them sends a verification message at each of the predetermined instants.

Growing community of inventors

La Colle sur Loup, France

Nicolas Grisi