ISHIBASHI Hayato

写真a

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Title

Professor

Laboratory location

Sugimoto Campus

Degree 【 display / non-display

  • Kyoto University -  Doctor of Informatics

  • Kyoto University -  Master of Engineering

Research Areas 【 display / non-display

Information network

Research Career 【 display / non-display

  • Computer Networks and Distributed Processing

    (Individual)

    Keyword in research subject:  computer networks

Association Memberships 【 display / non-display

  • INFORMATION PROCESSING SOCIETY OF JAPAN

  • The Institute of Electrical and Electronics Engineers, Inc

  • ACM

  • The Institute of Electronics, Information and Communication Engineers

  • The Japanese Society for Artificial Intelligence

Awards & Honors 【 display / non-display

  • IPSJ Best Paper Award

    2014  

  • The 1st International Conference on Advances in P2P Systems (AP2PS 2009) Best Paper Award

    2009  

  • AP2PS 2010 Best Paper Award

    2010  

Current Career 【 display / non-display

  • Osaka City University   Graduate School of Engineering   Physical Electronics and Informatics Course   Professor  

  • Osaka City University   Center for Information Initiative (CII)  

  • Osaka City University   Media Center   Professor  

Graduate School 【 display / non-display

  •  
    -
    1987

    Kyoto University  Graduate School, Division of Engineering 

Graduating School 【 display / non-display

  •  
    -
    1985

    Kyoto University   Faculty of Engineering  

 

Published Papers 【 display / non-display

  • Design of a User-Friendly OpenFlow-based Virtual Network Architecture for Large-Scale Organizations

    Ayumu Koga, Hayato Ishibashi

    The Special Interest Group Technical Reports of IPSJ  2019-IOT-44 ( 48 ) 1 - 6 2019.02

  • OpenFlowとハニーポットを用いたSSHログイン攻撃防止手法の提案と実装 (インターネットアーキテクチャ)

    薛 微微, 石橋 勇人

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報  114 ( 495 ) 13 - 18 2015.03  [Refereed]

     View Summary

    携帯電話網に代表されるように,近年インターネットへのアクセス手段が多様化しており,それにともなって外出先からのリモートアクセスのニーズが高まっている.このような場合によく使用される手段の1つにSSHがあるが,パスワード管理の甘さを利用しようとするSSHへの攻撃は後を絶たない.そこで,SSHサーバへの攻撃を防止するとともに,攻撃者の活動を観察可能とするため,OpenFlowとSSHハニーポットを利用した攻撃防止手法を提案する.本手法は,SSHサーバに対するアクセスパターンを調べることによって攻撃を検出し,攻撃者からのアクセスをSSHハニーポットへと誘導する.

    CiNii

  • A Proposal and Evaluation of a Method of Constructing Routing Tables With Configurable Max Path Length or Routing Table Size

    Seung-eon Oh, Kota Abe, Hayato Ishibashi, Toshio Matsuura

    The IEICE Transactions on Communications (Japanese Edition)  J97-B ( 10 ) 849 - 860 2014.10

  • KiZUNA : P2Pネットワークを用いた分散型マイクロブログサービスの実現 (インターネットアーキテクチャ)

    播磨 裕太, 安倍 広多, 石橋 勇人, 松浦 敏雄

    一般社団法人電子情報通信学会 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報  113 ( 443 ) 97 - 102 2014.02  [Refereed]

     View Summary

    現在実装中のP2Pネットワークを用いた分散型マイクロブログサービスKiZUNAの設計について述べる.KiZUNAはサーバを必要としないPure P2P型のシステムとして実現する.メッセージの購読と配送には構造化P2Pネットワークの1つであるSkip Graphを用いたALM(Application Level Multicast)を用いる.また,ハッシュタグ,全文検索,検索ストリーム,複製管理などの方式についても述べる.

    CiNii

  • Indexer Bulletにおけるノンブロッキング同期による並列実行方式

    藤田 昭人, 石橋 勇人

    一般社団法人情報処理学会 研究報告マルチメディア通信と分散処理(DPS)  2013 ( 5 ) 1 - 5 2013.09  [Refereed]

     View Summary

    Indexer Bullet (iBullet) はインターネット上に存在する独立した複数の情報リソースを取得し、利用者の目的に応じたデータを抽出してオブジェクトに集約し、そのインデックスを生成、管理するシステムである。独立した情報リソースからのインデックス生成は並列実行が可能であるが、本講ではその実装に先立ちスレッド同期の効率性を確認するため CompareAndSwap(CAS) 操作による Non-Blocking Synchronization による方式と Coarse-Grained Synchronization による方式との性能比較を試みる。Indexer Bullet is a system for creating and managing enormous data that are aggregated from several information resources on the Internet and tailored for each user. We plan concurrent index generation from individual internet information resource. To archive this, We try to figure out thread synchronization, and compire Non-Blocking Synchronization to Coarse-Grained Synchronization.

    CiNii

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Conference Activities & Talks 【 display / non-display

  • Design of a User-Friendly OpenFlow-based Virtual Network Architecture for Large-Scale Organizations

    Ayumu Koga, Hayato Ishibashi

    IPSJ SIGIOT  2019.03 

  • Design and Implementation of an SSH Server Protection System using OpenFlow and Honeypots

    2015.03 

  • Aggregation Skip Graph: A Skip Graph Extension for Efficient Aggregation Query

    The 2nd International Conference on Advances in P2P Systems  2010.10 

Grant-in-Aid for Scientific Research 【 display / non-display

  • Study on a Cooperative Distributed Caching Method for DTN Clusters

    Project/Area Number : 24500090  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2012.04
    -
    2016.03
     

    Partaker : MATSUURA Toshio, ABE Kota, Guō ShìXiáng

     View Summary

    This study proposed a method to efficiently utilize resources of a group of mobile phones as a whole cluster. A mobile phone is supposed to use long range communication technology such as 3G, LTE and WiMAX as well as short range communication technology such as Wi-Fi and Bluetooth. Mobile phones gathering in a relatively small area are making a cluster autonomously by a distributed manner and sharing their resources.

  • A Study on Constructing Virtual Overlay Networks Being Aware of Underlying Physical Networks

    Project/Area Number : 19500058  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2007
    -
    2009
     

    Partaker : MATSUURA Toshio, ABE Kota, UEDA Tatsuya, OZAKI Hisamichi

     View Summary

    This study proposes a method to construct a hierarchical distributed hash table based on node distance metrics. The hierarchy is determined by a clustering method that classifies nodes on the Internet by some distance metric like RTT (Round Trip Time) or hop counts between nodes. The proposed method reduces communication overhead between nodes on an overlay network making use of communication locality on the Internet.

  • Support Environment for Computer Literacy Education based on Programming Courses

    Project/Area Number : 18500719  Grant-in-Aid for Scientific Research(C) Partaker / Other

    Project Year :

    2006
    -
    2008
     

    Partaker : NISHIDA Tomohiro, ISHIBASHI Hayato, ABE Kota, YOSHIODA Tomoko

  • A Distributed Virtual Fileserver System with Redundant File Storing

    Project/Area Number : 16500039  Grant-in-Aid for Scientific Research(C) Representative

    Project Year :

    2004
    -
    2006
     

    Partaker : MATSUURA Toshio, ABE Kota

     View Summary

    This project targeted to develop a virtual fileserver system, which consists of many client PCs as its component nodes. Each client PC provides a part of its own storage area to construct a virtual filesystem that supplies a large amount of shared disk space consequently. One of the most important benefits of this approach is as the number of clients increases, the total capacity and total processing power increase as well. All nodes in the system run by a distributed, autonomous manner so that the entire system does not stop working if some portion of nodes got failure. File segments are redundantly stored for robustness.
    To archive this project, we set a design of a distributed file backup system as a first goal. It might be easier to implement than filesystem because backup systems are not so sensitive from the aspect of performance requirements. Then we have designed and implemented a distributed virtual filesystem with the knowledge acquired from the first goal.
    We also studied on distributed hash tables (DHT). Since each node in the system works autonomously and may join/leave at anytime, flexibility of DHTs is favorable to manage nodes and file placement. Our proposed DHT performs with our hierarchical clustering algorithm. It makes the utilization of network resource as effectively as possible by traffic localization.

  • A Method for Sharing Distributed Multimedia Data with High Transparency and Portability

    Project/Area Number : 15500048  Grant-in-Aid for Scientific Research(C) Partaker / Other

    Project Year :

    2003
    -
    2005
     

    Partaker : YAMAI Nariyoshi, NAKAYAMA Michiko, ISHIBASHI Hayato, FUJIKAWA Kazutoshi, ABE Kota

     View Summary

    With growth of computing power and proliferation of broadband access to the Internet, demand for streaming applications which can access multimedia data such as video and audio via network has been increasing. Since such applications employ their own data formats and transmission protocols in order to guarantee QoS, there are few applications which are widely available on the Internet. However, to share huge amount of multimedia data on the Internet, it is desirable that a user can use any client applications.
    In this paper, we have proposed a method of sharing multimedia data using file system which provides QoS function. When a quality of multimedia data needs to be deteriorated, the file system of our method supplements data with padding according to the format of multimedia data so that the file size of multimedia data will not be changed. With this feature, a client application can access multimedia data on a server transparently keeping realtimeness. To confirm the effectiveness of our method, we have implemented our method and conduct an experiment on the actual network. The result of the experiment shows that our method is effective even on narrow band network environment.

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