PROBLEM TO BE SOLVED: To flexibly construct a network for each policy by improving End to End performance in a front end system where a plurality of relay devices are mixed.;SOLUTION: In the vicinity of a switch which serves as an entry/exit port of an external network, a Front End Processor (FEP) having both a fire wall (FW) and a load balancer (LB) for recognizing a protocol of L7 (layer 7) level is provided to unify the L7 (layer 7) processing.;COPYRIGHT: (C)2011,JPO&INPIT
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