name: GTP
full_form: GPRS Tunnelling Protocols
context: host by reusing its IP addresses in network packets. In order to protect against this type of attack the target network product should implement anti-spoofing mechanisms, e.g. to reject packet with invalid source addresses, coming from unexpected interface, etc... Test case: - Obtain and verify documentation on this feature - Verify that spoofed packets are rejected Target network product classe(s): All Requirement 3: Tunnelling in GTP Reference: GTP Tunnelling â NS-GTPTN Description: This attack could pose a moderate security threat. It may be possible for attackers to wrap attack traffic in GTP Version 0 or 1 Packet, which has another embedded GTP Packet as part of its payload. As GTP is used to encapsulate packets originating from a mobile station, it is possible for a mobile station to create a GTP packet and forward it along to the SGSN. Upon receiving the GTP packet, the SGSN will encode it again, and forward it to the GGSN, through the relative PDP context. This embedded GTP
description: GPRS Tunnelling Protocols (GTP) is a protocol used for encapsulating packets originating from a mobile station in the 3GPP network architecture. It enables the transmission of data between different network elements, such as SGSN and GGSN, by wrapping packets in GTP headers.
explanation: The context explicitly mentions GTP as a tunnelling protocol used to encapsulate packets, which is a characteristic of protocols in telecommunications. The description of GTP's role in the network architecture and its usage for packet transmission further supports its classification as a Protocol.
section_title: A.2.2.6	Network Services
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