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Performance testing of a multi-tiered Web application in real WAN is not a trivial job. In this circumstance a tool which brings WAN cloud to a local area network makes the life of a developer/tester easier. However, mere emulation of WAN inside a LAN does not help a tester, unless he gets to know the performance of the applications in some numbers. Therefore, he needs to put a monitoring tool in the network too. This means a lot of manual handling of operations such as routing, emulating, port mirroring of switch and measuring the performance of applications simultaneously. We can well understand that this is a huge job for a tester. Can we bring network emulation and application performance monitoring tool together in a single box? This would become a great help for a developer/tester, because in that case he just needs only one machine to configure for the same. This paper investigates this problem and gives a solution thereafter.