Ostinato is an open-source, cross-platform network packet crafter/traffic generator and analyzer with a friendly GUI. Craft and send packets of several streams with different protocols at different rates.
It’s possible to control the ostinato server/drone from an external ostinato GUI. Select any interface as a controlling interface, connect it via a cloud connection to the outside and setup IP in the node configuration.
For more information see http://ostinato.org/ and http://www.bernhard-ehlers.de/projects/ostinato4gns3/index.html