• Title/Summary/Keyword: Service discovery protocol

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ASESDP : An Efficient Service Discovery Protocol in Pervasive Computing Environments

  • Ma, Qianli;Liao, Minghong;Jiang, Shouxu;Hong, Wan-Pyo;Gao, Zhenguo
    • Journal of information and communication convergence engineering
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    • v.6 no.4
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    • pp.396-404
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    • 2008
  • Service discovery is the technology of finding needed services in networks, and a key point in pervasive computing environments. This paper presents a novel service discovery protocol: ASESDP(AIP and SRR Enhanced Service Discovery Protocol). In ASESDP, tow schemes are proposed to enhance its performance: AIP(Advertisement Information Piggybacked) and SRR(Shortest Reply Route). In AIP, parts of advertisement information are piggybacked in the service reply packet, which makes the advertisement information propagating along the reply path, and spreads its transmission area. In SRR, in order to reduce the service response time, the shortest reply route is chosen to forward the service reply packet to the source node sending the service request. With the theoretical analysis and Glomosim simulation results, it is verified that ASESDP can reduce the number of service request packets, save the response time, and improve the efficiency of service discovery.

Adaptively Flexible Service Discovery and Advertisement for SSDP of UPnP in Wireless Ad-hoc Network (무선 애드 혹 환경에서의 UPnP의 SSDP 기능 향상을 위한 서비스 발견 및 광고 기법)

  • Jung, So-Ra;Youn, Hee-Yong
    • The KIPS Transactions:PartA
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    • v.17A no.5
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    • pp.237-248
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    • 2010
  • UPnP(Universal Plug and Play) is a middleware of DLNA (Digital Living Network Alliance) services a home network. UPnP supports the connections between each other devices in networks and also provides service discovery and advertisement with SSDP(Simple Service Discovery Protocol), which is generally designed for wired networks. SSDP operates on multicasting discovery request and advertisement and unicasting a reply in networks. It is a challenge issue for service discovery protocol such as SSDP to provide a stable and effective service in wireless ad-hoc networks. Wired based service discovery protocol does not consider the dynamics of wireless ad-hoc network. In that case, the nodes are freely in or out. Therefore, this paper proposes a flexible SSDP(fSSDP) which is a peer-to-peer(P2P) discovery protocol adopted for wireless ad-hoc Networks. It is implemented on the extension of SSDP. fSSDP supports a functionality that the broadcast area of service discovery dynamically changes with the periodically updated area of advertisement. It is good for reducing messaging overhead caused from the broadcast flooding of service discovery in wireless ad-hoc network.

Implementation of an Efficient Service Discovery Protocol for Directory Facilitator Based on CALM Agent (CLAM 에이전트 기반 Directory Facilitator를 위한 효율적인 서비스 디스커버리 프로토콜 구현)

  • Lee, Seung-Hyun;Shin, Dong-Ryeol;Jang, Kyung-Soo
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.6
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    • pp.275-282
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    • 2011
  • Current service discovery protocols such as UPnP, Jini, SLP provide the basic function which is message exchange pattern, service representation and description, in service discovery. They does not guarantee service interoperability among service discovery. Therefore, in this paper, we design and implement CLAM (Component-based Autonomic Layered Middleware) agent platform to enable an efficient service discovery through extension of DF agent function in FIPA-compliant specification. Also, we propose an efficient service discovery mechanism using DHT-Chord algorithm to guarantee scalability and interoperability in DF agent.

Multi-agent-based approach for service discovery in smart meeting spaces (지능형 협업환경에서 서비스 발견을 위한 다중 에이전트 시스템 적용 방법)

  • Bae, Chang-Hyeok;Han, Sang-Woo;Kim, Jong-Won
    • 한국HCI학회:학술대회논문집
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    • pp.669-673
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    • 2008
  • The service discovery method is an important technology finding and offering users' desirable services in smart meeting spaces. Extensive researches of the service discovery methods are achieved: SSDP(simple service discovery protocol) of UPnP(universal plug & play) and so on. However, there are several limitations to satisfy the requirements of service discovery in smart meeting spaces. In this paper, the requirements of service discovery in smart meeting spaces are investigated and the service discovery method based on multi-agent system is proposed in the practical aspect. Additionally, we explore the possibilities of the proposed approach by implementing a couple of services belonging to the smart meeting spaces.

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Bluetooth Universal Remote Controller for Controlling Home Network (홈 네트워크 제어를 위한 블루투스 통합 리모트 컨트롤러)

  • 조성배;김희자;이상정
    • Proceedings of the Korean Information Science Society Conference
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    • pp.625-627
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    • 2004
  • 최근 홈 네트워크 상에서 가전기기를 통합 제어하는 무선 통합 컨트롤러의 연구 개발이 활발히 진행되고 있다. 본 논문에서는 근거리 무선망인 블루투스를 사용하며 가정 내에서 가전기기를 제어하는 블루투스 통합 컨트롤러를 설계하고 구현한다. 제안된 통합 컨트롤러는 사용자 관리 및 기기의 세부기능 제어를 위해 메신저 형식의 사용자 인터페이스로 설계한다 또한 블루투스의 SOP(Service Discovery Protocol)를 사용하여 댁내 가전기기를 위한 서비스를 동적 발견하고 관리한다.

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Construction of IoT Environment for XMPP Protocol Based Medical Devices Using Powershell (Powershell을 이용한 안전한 XMPP 프로토콜 기반의 의료기기 IoT환경 구축 제안)

  • Park, Yeon-Jin;Lee, Kuen-Ho
    • Journal of The Korea Internet of Things Society
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    • v.2 no.2
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    • pp.15-20
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    • 2016
  • MicroSoft Windows 10 IoT version, released in August 2015, successfully drew consumer interest by introducing the familiar Windows into the IoT market, and enabled an easier system construction of IoT web servers. Meanwhile, overdiagnosis has recently emerged as a controversy in medical society. Establishment of communication between IoT servers and medical devices will send treatment results to users and activate communication between hospitals, greatly reducing this problem. The IoT server, with its limited resources, utilizes lightweight protocols that do not generate traffic and are easy to use. This paper proposes IoT networks which will enable medical devices to easily provide ubiquitous environments to their users, through utilization of the lightweight Simple Service Discovery Protocol (SSDP) and the secure Extensible Messaging and Presence Protocol (XMPP).

Hash-based SSDP for IoT Device Security (IoT 기기 보안을 위한 해시 기반의 SSDP)

  • Kim, Hyo-Jong;Han, Kun-Hee;Shin, Seung-Soo
    • Journal of the Korea Convergence Society
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    • v.12 no.5
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    • pp.9-16
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    • 2021
  • Due to the prolonged infectious disease of COVID-19 worldwide, there are various security threats due to network attacks on Internet of Things devices that are vulnerable to telecommuting. Initially, users of Internet of Things devices were exploited for vulnerabilities in Remote Desktop Protocol, spear phishing and APT attacks. Since then, the technology of network attacks has gradually evolved, exploiting the simple service discovery protocol of Internet of Things devices, and DRDoS attacks have continued to increase. Existing SSDPs are accessible to unauthorized devices on the network, resulting in problems with information disclosure and amplification attacks on SSDP servers. To compensate for the problem with the authentication procedure of existing SSDPs, we propose a hash-based SSDP that encrypts server-specific information with hash and adds authentication fields to both Notify and M-Search message packets to determine whether an authorized IoT device is present.

Device RDoS Attack Determination and Response System Design (디바이스의 DDoS 공격 여부 판단 및 대응 시스템 설계)

  • Kim, Hyo-jong;Choi, Su-young;Kim, Min-sung;Shin, Seung-soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.108-110
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    • 2021
  • Since 2015, attacks using the IoT protocol have been continuously reported. Among various IoT protocols, attackers attempt DDoS attacks using SSDP(Simple Service Discovery Protocol), and as statistics of cyber shelters, Korea has about 1 million open SSDP servers. Vulnerable SSDP servers connected to the Internet can generate more than 50Gb of traffic and the risk of attack increases gradually. Until recently, distributed denial of service attacks and distributed reflective denial of service attacks have been a security issue. Accordingly, the purpose of this study is to analyze the request packet of the existing SSDP protocol to identify an amplification attack and to avoid a response when an amplification attack is suspected, thereby preventing network load due to the occurrence of a large number of response packets due to the role of traffic reflection amplification.

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Design of Secure Protocol based on trust model and trust values for Ubiquitous Sensor Networks (Ubiquitous Sensor Network에서 안전성 증가를 위한 신뢰모델과 신뢰값에 관한 프로토콜 설계)

  • Jang, Kun Won;Suh, Jang Won
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.4 no.3
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    • pp.9-18
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    • 2008
  • Mobile devices do not need the fixed network infrastructure in ad-hoc network, these devices communicate each other through the distributed control. Accordingly, mobile devices can discover several services using dynamic searching method and provide safely public ownership of these services. Ad-hoc network needs the distributed control and topology of dynamic network because the limited power for processing and network communication. This paper is devoted to provide the secure protocol that provides efficient services discovery using SDP(Service Discovery Protocol) and considers the security requirements. Proposed protocol provides the distributed control based on PKI without central server, the discovery of trusted service, secure telecommunication, the identification among mobile devices, and service access control by user authority.