公开(公告)号：US20220014550A1

公开(公告)日：2022-01-13

申请号：US17482979

申请日：2021-09-23

Applicant: NEC Corporation

Inventor： Kazuaki NAKAJIMA ,  Shinji MASUDA ,  Toshiyuki TAMURA ,  Hidemi ISHIKAWA ,  Masayuki SHINSHO

IPC: H04L29/06 ,  G06F21/55 ,  H04W12/125 ,  H04W12/12 ,  H04W76/18

Abstract: An object is to provide a monitor device capable of reducing threat of DoS attacks on a mobile network. A monitor device (10) according to the present invention includes a signal monitor unit (11) for estimating a specific base station communicating with a communication terminal (30) attacking a mobile network according to the number of times an ATTACH procedure is rejected, in which the ATTACH procedure is for registering information about a communication terminal (30) communicating with a base station (20) in a communication device (40) located in the mobile network, and a base station control unit (12) for causing the specific base station to determine whether to execute the ATTACH procedure related to a communication terminal served by the specific base station according to communication terminal identification information set in a signal transmitted from the communication terminal served by the specific base station.

公开(公告)号：US20180309783A1

公开(公告)日：2018-10-25

申请号：US15768315

申请日：2016-07-04

Applicant: NEC CORPORATION

Inventor： Kazuaki NAKAJIMA ,  Shinji MASUDA ,  Toshiyuki TAMURA ,  Hidemi ISHIKAWA ,  Masayuki SHINSHO

IPC: H04L29/06 ,  G06F21/55 ,  H04W76/18

CPC classification number: H04L63/1458 ,  G06F21/55 ,  G06F21/554 ,  H04L63/1416 ,  H04W12/12 ,  H04W48/02 ,  H04W76/18

Abstract: An object is to provide a monitor device capable of reducing threat of DoS attacks on a mobile network. A monitor device (10) according to the present invention includes a signal monitor unit (11) for estimating a specific base station communicating with a communication terminal (30) attacking a mobile network according to the number of times an ATTACH procedure is rejected, in which the ATTACH procedure is for registering information about a communication terminal (30) communicating with a base station (20) in a communication device (40) located in the mobile network, and a base station control unit (12) for causing the specific base station to determine whether to execute the ATTACH procedure related to a communication terminal served by the specific base station according to communication terminal identification information set in a signal transmitted from the communication terminal served by the specific base station.