Method and system of enforcing the dispatching of IP datagrams on a plurality of servers according to a defined policy

摘要

A method and a system, in a network device, of enforcing the dispatching of Internet Protocol (IP) datagrams on a plurality of servers (503) according to a defined policy, each IP datagram being sent from a source port on a source device to a destination port on a destination device in an Intranet network (502) comprising a plurality of servers (503) and at least one client (501). The method comprises the steps of: determining (804, 806) whether the source device of an incoming IP datagram is a client (501) or a server (503); If (805) the source device of the IP datagram is a client (501): identifying (803, 904): client address (310), client port (312), destination address (311), and destination port (313) of the IP Datagram (301); searching (906) for a server address and a server port in a first table (612), this first table comprising a server address (618) and a server port (617) for each connection (613) identified by a client address (614), a client port (615), a destination address (616) and a destination port (617); if a server address and a server port are identified in said first table, and If said server address and the destination address are different or if said server port and the destination port are different: replacing (907) the destination address (311) and the destination port (313) in the IP datagram respectively by the server address (618) and the server port (619); sending (909) the IP datagram over the IP network (502).