PGM Protocol-- Pragmatic General Multicast Its application in file transfer service

The aim of this article is to explain new projects taking place about secure file transfer techniques by multicast. In this matter we will analyze Pragmatic General Multicast as a way to obtain better results in terms of transfer rate and a development in the way of using net resources. To conclude, there will be a comparison among the results of this specific file transfer and the FTP over TCP conventional technology.