A testing system provides automated testing of one or more network infrastructures. The testing system may automatically reconfigure one or more devices within a network infrastructure and then conduct testing on the newly configured network infrastructure. Test results may be used to diagnose network anomalies and to compare performance or other characteristics of various network configurations. In one embodiment, the testing system tests a communication channel between a front-end and back-end mechanism where data traffic is encoded between the front-end and back-end mechanism.