What is WAN Simulator?

Many distributed (client-server) applications were originally designed to operate in a Local Area Network environment. Nowadays this same software is often being deployed in a Wide Area Network. However, the longer latencies may have a serious impact on the performance of certain applications. WANSIM can provide a  WAN simulation program which enables client-server application providers to investigate their software's performance characteristics without actually setting up a WAN system.

The WAN simulator recreates the dynamic behavior of the Internet such that any network model can be reproduced including those models that change with traffic or time. Features of the WAN simulator include: impairments, modifiers, data capture and generation, packet analyzer, network capture and replay, broadcasting ,and bit pattern filtering.. More and more applications are becoming web based and prone to the effects of the WAN simulator.