name: RN
full_form: Relay Node
context: Despite the security assumptions made in the previous section, the introduction of a RN into the network introduces some new security threats to E-UTRAN, namely: - Impersonation of a RN to attack the user(s) attached to the RN - Attacks on the Un interface between RN and DeNB - Inserting a MitM - Attacking the traffic - Impersonation of a RN to attack the network - Attacks on the interface between the RN and UICC - Attacks on the RN itself - DoS Attacks - RN stays as UE after initial attach - Attacks on NAS signalling and AS traffic 1 Impersonation of a RN to attack user attached to RN To perform the attack, the attacker removes the UICC from a real RN and inserts it into their own Rogue RN as shown in the below figure. As there is no authentication of the RN as a device (only the subscription that is inserted in the RN), the network can not detect the Rogue RN, and hence keys related to the user-UE will be passed to the Rogue RN. This enables a user to attach to the Rogue RN and hence
description: A Relay Node (RN) extends the coverage of a Donor eNodeB (DeNB) by relaying traffic between the DeNB and User Equipment (UE). It acts as a proxy, forwarding data and control signals to facilitate communication.
explanation: The text describes an RN's function within a network, specifically relaying traffic between eNodeBs and User Equipment. This role in facilitating communication within a telecommunications system classifies it as a Network Function.
section_title: 5.3	Security threats
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