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On Α Locally Finite In Ditopological… [7] L. M. Brown, R. Erturk, and S. Dost, Ditopological texture spaces and fuzzy topology, II. Topological Considerations, Fuzzy Sets and Systems 147 (2) (2004), 201-231. [8] L. M. Brown, R. Erturk, and S. Dost, Ditopological texture spaces and fuzzy topology, III. Separation Axioms, Fuzzy Sets and Systems 157 (14) (2006), 1886-1912. [9] M. Demirci, Textures and C-spaces, Fuzzy Sets and Systems 158 (11) (2007), 1237- [10] 1245. [11] S. Dost, L. M. Brown, and R. Erturk, β-open and β-closed sets in ditopological setting, Filomat, 24(2010)11-26. [12] J.Dontchev, On pre -I-open sets and a decomposition of I- continuity, Banyan Math.J., [13] 2(1996). [14] J.Dontchev, M.Ganster and D.Rose, Ideal resolvability, Topology Appl., 93 (1) (1999), [15] 1-16. [16] T.R.Hamlett and D.S.Jankovic, Compatible extensions of ideals, Boll.Un.Mat. Ital., 7 (1992), 453-465. [17] S. Jafari, Viswanathan K., Rajamani, M., Krishnaprakash, S. On decomposition of fuzzy A-continuity, The J. Nonlinear Sci. Appl. (4) 2008 236-240. [18] O. Njastad, On some classes of nearly open sets, Pacic J. Math. 15, (1965), 961-970 . www.<strong>ijcer</strong>online.com ||May ||2013|| Page 107
International Journal of Computational Engineering Research||Vol, 03||Issue, 5|| A Study on Security in Sensor Networks Divya James 1 , Geethu Krishna Kartha 2 1 Assistant Professor,Department of Information Technology,Rajagiri School of Engineering and Technology 2 Kochi,India PG Scholar,Department of Information Technology, Rajagiri School of Engineering and Technology Kochi,India ABSTRACT Network Management is one of the important functionality in network Engineering. This paper proposes a methodology for security in SNMP managed sensor networks. McAfee is the platform used for implementing the security. It is mainly based on SNMP V3 which is the enhanced version of SNMP and it includes authentication.IEEE1451.4 TEDS is also incorporated to provide plug and play of sensor networks. SNMP is compactable with many kind of devices used in networking, So it provides a wide varity of devices to communicate in a network independent of the manufacturers. The proposed security method is applicable to many of the sensor devices. Indexterms: IEEE standard, Management Information Base, Transducers. I. INTRODUCTION Networks and processing systems are of growing importance and indeed ,have become critical in business world. The management of sensor network requires many functions like configuration of sensors , security , administration etc. Simple network management protocol is an application layer protocol used for managing the network devices[1]. SNMP is a network management protocol that has become the standard for the exchange of information in a network. Before the evolution of SNMP and other network management software , administrator would have to be physically attached to the network devices in order to access the configurations and troubleshooting data[12]. It uses one or more administrative computers called managers, have the task of managing and monitoring a group of devices called managed system . software executing in each devices called agent act as an interface between manager and managed system. The manager send messages to the agent to get or set a particular object of an element. The managed devices collect and store information and make this information available to the manager system using SNMP[1]. An agent will be having management information and translate that information in to SNMP compactable form. The SNMP architecture helps to achieve the following goals[1]: 1) making the management functions more simpler 2) management and operations are comparatively more flexible 3) managing complex networks and device compatibility with the network The SNMP provides various functions to manage the devices connected with the network using SNMP ping. Various other functions are Get Request, GetNextRequest, GetBulkRequest, SetRequest,Trap , Response , Inform Request. The manager can get information regarding a particular device by using get commanriable to retrieve the value of a variable from the list of variables. Set Request to change the value of a variable by the manager. GetNextRequest to discover the available variables and there values. GetBulkRequest to get multiple iterations of GetNextRequest by the manager. Response is send by the agent to the manager as response of any of the request messages. Trap is used by the agent to notify about alerts or special events that are to be monitored. Inform Request is send by a manager to other manager as asynchronous notifications. To access the information each device will be having a unique identifier SNMP uses dotted decimal notation called Object Identifier (OID) [2]. www.<strong>ijcer</strong>online.com ||May ||2013|| Page 108
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