With the aim of tackling shortcomings of MIPv6, several host mobility management protocols, such as HIP have been released. In the same way as for MIPv6, HIP based protocols have been worked out for addressing necessities of NEMO scenarios. However, several limitations are still present, specially regarding secure mobility management. In this work, we highlight these limitations and outline the fundamentals of our protocol, NeMHIP.

Recent widespread deployment of different types of sensors and detectors has opened the door to a new way of understanding collaborative applications. The use of such devices allows information to be collected, used and disclosed on a massive scale and under very different conditions from which we are currently familiar with. Despite the huge potential of these collaborative environments, privacy is one of their most criticized aspects and probably the greatest barrier to their long-term success. To address this problem, we present a privacy-enhancing security model specifically tailored to the characteristics of ubiquitous and heterogeneous environments consisting of low capacity devices. This security model is based on the Kerberos symmetric key protocol which has been modified and extended to avoid using timestamps and to accomplish the authorization process. Finally, we present a validation of our proposal using an automated tool and we show a real world deployment use case.

Neutral Access Networks (NAN) have appeared as a new model to overcome some restrictions and lack of flexibility that are present currently in broadband access networks. NAN brings new business opportunities by opening this market to new stakeholders. Although the NAN model is accepted, there are some technical issues that need to be resolved to facilitate wider NAN deployment. This paper proposes a new technical approach to neutral access networks, which is based on Carrier Ethernet technology. The proposal allows the user to independently select both the service provider and the network operator that will be used to deliver the service. To achieve this, a shared infrastructure is needed, which takes NAN as reference model. The main contributions of this proposal are the following: an Ethernet-based approach for neutral access networks; a mechanism for users to select which network operator is used to access each/target service provider; and an AAA (Authentication, Authorization and Accounting) infrastructure and access control policy profile to control service delivery over selected/requested NAN. Finally, a working prototype is described for validation of the proposal.