Details of a Researcher - OKAZAKI Naonobu

Papers - OKAZAKI Naonobu

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アドホックネットワークにおける階層化複数経路構築手法の提案 Reviewed

油田健太郎, 岡崎直宣, 冨田重幸

情報処理学会マルチメディア，分散，協調とモバイルシンポジウム（DICOMO2005）論文集 317 - 320 2005.7

Language：Japanese Publishing type：Research paper (other academic)

モバイルアドホックネットワーク上のPeer to Peerシステムにおける情報検索手法の一検討

小林亜衣, 蛯原敏博, 油田健太郎, 岡崎直宣, 朴美娘

情報処理学会火の国情報シンポジウム2005論文集 ( A-2-1 ) 1 - 8 2005.3

Language：Japanese Publishing type：Research paper (other academic)

アドホックネットワークにおける階層型複数経路構築手法の検討

油田健太郎, 本田浩一, 岡崎直宣, 冨田重幸, 朴美娘

情報処理学会火の国情報シンポジウム2005論文集 ( A-2-2 ) 1 - 8 2005.3

Language：Japanese Publishing type：Research paper (other academic)

A Zone-Based Maltipath routing for ad hoc network

ABURADA Kentaro, HONDA Koichi, OKAZAKI Naonobu, TOMITA Shigeyuki

IPSJ SIG technical reports 2004 ( 114 ) 63 - 70 2004.11

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)

A global positioning system (GPS)-based routing protocol, called zone-based hierarchical link state (ZHLS) routing protocol, have been proposed for routing data packets for ad hoc networks. In this protocol, the network is divided into non-overlapping zones. Each node only knows the node connectivity within its zone and the zone connectivity of the whole network. The link state routing is performed on two levels : local node and global zone levels. Hierarchical approach reduces the amount of overhead of dynamic changing topology. ZHLS is, however, single-path protocol which detects only one route. In ad hoc networks, due to mobility of nodes and instability of communication links, multipath protocols are required. In this paper, we propose an eXtended ZHLS (called XZHLS) which generates disjoint paths in global zone level. If a disconnected link is detected in the currently using route, packet transmission is switched to another route.

An experimental evaluation of trace-back techniques of Denial of Service attacks

KAWAMURA Shigehisa, OKAZAKI Naonobu

IPSJ SIG technical reports 2004 ( 114 ) 111 - 118 2004.11

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)

Recently, frequency of Denial of Service attacks are increased, and it is difficult to trace packets with incorrect, or "spoofed", source address. Savage et al. proposed a method to trace flooding attacks by "marking" packets. This method, however, has some problems including the time consuming for gathering packets to re-configure the attacking paths. We proposed a method to solve this problem by extending marking area in each packet. In this paper, we will implement the both algorithms to estimate the usability of them. From the results of some experiments, we will conclude the effectiveness of the extended method.

アドホックネットワークにおける階層型複数経路構築手法の提案

油田健太郎，本田浩一，岡崎直宣，冨田重幸

情報処理学会研究報告, MBL 2004 ( 114 ) 63 - 70 2004.11

Language：Japanese Publishing type：Research paper (other academic)

ネットワークサービス不能攻撃に対する追跡手法の実装と評価

河村栄寿，岡崎直宣

情報処理学会研究報告, MBL 2004 ( 114 ) 111 - 118 2004.11

Language：Japanese Publishing type：Research paper (other academic)

Examination about user management technique in the beginner PC user supprt system

Aburada Kentaro, Kanazawa Masashi, Hiratsuka Yoshihiro, Okazaki Naonobu

Memoirs of the Faculty of Engineering, Miyazaki University 33 399 - 406 2004.10