Add Authentication support in Flash Encoder

We are using Wowza media server and flash encoder for video streaming. We need to add following : 1) When ever user start streaming from flash encoder, it should popup for user authentication. Once user add the correct username and password, flash encoder allow streaming to start. Worker may need to set one easy and specific script on Wowza Deliverable : Correction in wowza server(on dedicated server ) and Flash encoder instructions.