Security requirements for IP over satellite DVB networks

The MPEG-2 standard supports a range of transmission methods for a range of services. This document provides a threat analysis and derives the security requirements when using the Transport Stream, TS, to support an Internet network-layer using unidirectional lightweight encapsulation (ULE). The document also provides the motivation for link-level security for a ULE Stream. A ULE Stream may be used to send IPv4 packets, IPv6 packets, and other Protocol Data Units to an arbitrarily large number of receivers supporting unicast and/or multicast transmissions.