Abstract
Satellites are expected to play an essential role in bridging the ldquodigital dividerdquo; satellite networks are likely to be the only way to provide broadband services to regions that cannot be economically reached by terrestrial networks, in particular the more remote regions of Europe and the rest of the world. Security can be a problem for such global services. This paper presents a link layer security solution and how it is implemented for the unidirectional lightweight encapsulation (ULE). A satellite testbed is constructed where the ULE security implementation is validated. The experiments results are presented in this paper.