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Wyszukujesz frazę "OpenFlow" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
A Queue Monitoring System in OpenFlow Software Defined Networks
Autorzy:
Rowshanrad, S.
Namvarasl, S.
Keshtgari, M.
Powiązania:
https://bibliotekanauki.pl/articles/307860.pdf
Data publikacji:
2017
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Floodlight
OpenFlow
queue monitoring
software defined networks
Opis:
Real-time traffic characteristic is different and it is very sensitive to delay. To meet traffic specications in real time, monitoring systems are used as an important part of networking. Many monitoring systems are deployed to have an update view of the network QoS parameters and performance. Most of these systems are implemented to measure QoS parameters in links. Here, in this paper, a system for monitoring queues in each link by means of Software Defined Networks is proposed. The monitoring system is implemented by extending Floodlight controller, which uses OpenFlow as southbound protocol. The controller has a centralized view of the network. By the help of OpenFlow it also can provide flow level statistics. Using these advantages, the proposed system can monitor delay and available bandwidth of a queue on a link or path. Despite of monitoring systems in traditional networks, the proposed monitoring system makes a low overhead in network thanks to OpenFlow protocol messages. It is also integrated into the network controller, which enables QoS and trac engineering applications to use the system's reports for automatic traffic management and QoS setup. The experimental results show a 99% accuracy of the proposed system for monitoring of both bandwidth and delay.
Źródło:
Journal of Telecommunications and Information Technology; 2017, 1; 39-43
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Network management services based on the OpenFlow environment
Autorzy:
Wilk, P.
Nawrocki, P.
Powiązania:
https://bibliotekanauki.pl/articles/305527.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
OpenFlow
software-defined networks (SDN)
management services
load balancing
Opis:
The subject of this article is network management through web service calls, which allows software applications to exert an influence on network traffic. In this manner, software can make independent decisions concerning the direction of requests so that they can be served as soon as possible. This is important because only proper cooperation including all architecture layers can ensure the best performance, especially when software that largely depends on computer networks and utilizes them heavily is involved. To demonstrate that the approach described above is feasible and can be useful at the same time, this article presents a switch-level load balancer developed using OpenFlow. Client software communicates with the balancer through REST web service calls, which are used to provide information on current machine load and its ability to serve incoming requests. The result is a cheap, highly customizable and extremely fast load balancer with considerable potential for further development.
Źródło:
Computer Science; 2014, 15 (3); 253-270
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real-time detection and mitigation of flood attacks in SDN networks
Wykrywanie w czasie rzeczywistym i niwelowanie masowych ataków w sieciach SDN
Autorzy:
Neykov, N.
Powiązania:
https://bibliotekanauki.pl/articles/131346.pdf
Data publikacji:
2017
Wydawca:
Uczelnia Jana Wyżykowskiego
Tematy:
SDN
OpenFlow
OpenVSwitch
Mininet
sFlow
DDoS
flood attack
OpenStack
atak masowy
Opis:
Distributed Denial of Service (DDoS) flooding attack threats are becoming more and more relevant due to the advances in the Software Defined Networks (SDN). This rising trend creates an emerging need for defense mechanisms against such attacks. In order to address those issues the following paper focuses primarily on the implementation of an automatic real-time DDoS defense application based on sFlow technology. Initially we start by constructing a special flow, bound to a metric in order to capture traffic of interest. As soon as the flow reaches a certain predefined metric level, it is sent to an analyzer. Next we implement a detection algorithm based on the event handling capabilities of the sFlow-RT real-time analyser. Finally, the algorithm is tested with emulation network Mininet using network traffic, resulting in quick and effective DDoS attack mitigation.
Zagrożenia w wyniku rozproszonej odmowy usługi (DDos) w przypadku masowego ataku stają się coraz bardziej możliwe z uwagi na rozwój programowalnych sieci (SDN). Ten rosnący trend powoduje konieczność tworzenia mechanizmów obronnych na wypadek takich ataków. W celu odniesienia sie do takich zagadnień, artykuł ten przede wszystkim skupia się na wdrażaniu automatycznych, działających w czasie rzeczywistym aplikacji obronnych DDoS, opartych na technologii sFlow. Wstępnie rozpoczynamy od stworzenia określonego przepływu, związanego z pomiarem w celu wychwycenia jak duże jest zainteresowanie eksploracją danych. Jak tylko przepływ osiągnie pewien wcześniej określony poziom, informacja zostaje wysłana do analityka. Następnie wdrażamy algorytm wykrywania, w oparciu o zdarzenie, który posiada funkcje analityka sFlow dzialajacego w czasie rzeczywistym. Na koniec testuje się algorytm przy wykorzystaniu emulacyjnej sieci Mininet, wykorzystującej eksplorację danych, co w rezultacie szybko i w efektywny sposób niweluje masowy atak DDoS.
Źródło:
Zeszyty Naukowe Uczelni Jana Wyżykowskiego. Studia z Nauk Technicznych; 2017, 6; 171-182
2543-6740
Pojawia się w:
Zeszyty Naukowe Uczelni Jana Wyżykowskiego. Studia z Nauk Technicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intrusion Detection in Software Defined Networks with Self-organized Maps
Autorzy:
Jankowski, D.
Amanowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/308109.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
IDS dataset
machine learning
metasploit
network security
network simulation
OpenFlow
virtualization
Opis:
The Software Defined Network (SDN) architecture provides new opportunities to implement security mechanisms in terms of unauthorized activities detection. At the same time, there are certain risks associated with this technology. The presented approach covers a conception of the measurement method, virtual testbed and classification mechanism for SDNs. The paper presents a measurement method which allows collecting network traffic flow parameters, generated by a virtual SDN environment. The collected dataset can be used in machine learning methods to detect unauthorized activities.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 4; 3-9
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Novel Software-Defined Networking Controller : the Distributed Active Information Model (DAIM)
Autorzy:
Pupatwibul, P.
Banjar, A.
Hossain, M. I.
Braun, R.
Moulton, B.
Powiązania:
https://bibliotekanauki.pl/articles/226996.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
distributed network
OpenFlow
DAIM model
software defined networking
next generation networks
Opis:
This paper presents a new OpenFlow controller: the Distributed Active Information Model (DAIM). The DAIM controller was developed to explore the viability of a logically distributed control plane. It is implemented in a distributed way throughout a software-defined network, at the level of the switches. The method enables local process flows, by way of local packet switching, to be controlled by the distributed DAIM controller (as opposed to a centralised OpenFlow controller). The DAIM ecosystem is discussed with some sample code, together with flowcharts of the implemented algorithms. We present implementation details, a testing methodology, and an experimental evaluation. A performance analysis was conducted using the Cbench open benchmarking tool. Comparisons were drawn with respect to throughput and latency. It is concluded that the DAIM controller can handle a high throughput, while keeping the latency relatively low. We believe the results to date are potentially very interesting, especially in light of the fact that a key feature of the DAIM controller is that it is designed to enable the future development of autonomous local flow process and management strategies.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 2; 209-216
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of resource control systems in multi-layer virtual networks
Autorzy:
Dabiński, B.
Petrecki, D.
Świątek, P.
Powiązania:
https://bibliotekanauki.pl/articles/308736.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Execution Management
MPLS
network virtualization performance
OpenFlow
parallel networks
virtual networks
virtual networks performance
Opis:
This paper describes the performance of various methods of QoS assurance for each connection in an environment composed of virtual networks and dedicate end-to-end connections inside them. The authors worked on the basis of research conducted with the use of the authorial network management system named Executed Management, which uses resources virtualization platforms VMware and Mininet for testing purposes. We briefly describe our system and techniques we used and some alternatives we tested and discarded because of their limitations. Functionality and performance of proposed solution to widespread implemented mechanisms as OpenFlow and MPLS are compared. Reasons for selecting well-known techniques to isolate networks and limit bandwidth on different levels of virtualization are considered. The purpose of this paper is to show out our studies and performance we achieved.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 3; 38-47
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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