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Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

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In this paper, we evaluate the options for a viable security architecture for the 3GPP Home (evolved) NodeB (H(e)NB) and present the trade-off between the level of security provided and the associated cost of a H(e)NB device. Low cost of the H(e)NB device is one of the key factors to achieve high market penetration and the major contributor to the cost of the H(e)NB device is the security architecture. It is of interest to analyse the security challenges, security requirements and security mechanisms for (i) H(e)NB authentication, (ii) provisioning of security credentials, (iii) backhaul link protection, (iv) location verification and (v) user access control in the H(e)NB. It is required that the H(e)NB architecture mitigates the threats foreseen by opting a comprehensive security mechanisms amenable to both the operators and the subscribers, while satisfying the acceptable level of security required.