Security and the OSI Model Essay -- Networks Telecommunications

Abstract The Open Systems connect up (OSI) theoretical account is a standard seed model for the conference amongst two end spendrs. Seven different shapes make up the OSI model sensual, information link, network, transport, session, presentation, and application. This paper will go along the causa of security that is associated with each(prenominal) level of the OSI model.Physical LayerThe somatogenetic forge is where the actual communication occurs amidst devices. The security of the tangible class pertains to the actual ironware. The vulnerabilities of the physical degree includePower outageEnvironmental contain lossHardware theft, impose on _or_ oppress or destructionUnauthorized ironware changes (i.e. removable media, data connections) breakup of the physical data links unsung data InterceptionKeystroke Logging genuine measures can be implemented to retard the physical layer is secure. This would be done by storing solely hardware in a locked envi ronment. The use of electronic locks would control and log all access to the room containing the hardware. The electronic locks could be a PIN and give-and-take or fingerprint digital scanner (biometrics). The use of video and audio charge would tin physical check of unauthorized access that could compromise the hardware.Data Link LayerThe flash layer of the OSI model is the data link layer. This is the layer that transports the data between network nodes in a bulky knowledge domain network (WAN) or on the same local area network (LAN) between nodes. The data link layer makes available the adjective and functional means to fail data between network devices and could provide the measures to find and possibly limit errors that may occur in the physical layer. The security vulnerabi... ...on. This is to stop all unauthorized use of the network.ConclusionIn conclusion, the information covered in this paper shows the different types of security that is associated with each level of the standard OSI model. From the physical layer to the application layer, each layer has a different type of security which must be utilise at each layer to prevent any security leaks, spoofing, and endless loops. These are just a few of the different vulnerabilities that must be protected on a WLAN or LAN. ReferencesReed (November 21, 2003). Applying the OSI 7 layer model to education Security. Retrieved on January 11, 2008, from SANS Institute. Website http//www.sans.org/reading_room/whitepapers/protocols/1309.phpHaden (2008). The OSI Model. Retrieved on January 11, 2008, from Data intercommunicate Resource. Website http//www.rhyshaden.com/osi.htm Security and the OSI Model analyze -- Networks TelecommunicationsAbstract The Open Systems Interconnect (OSI) model is a standard reference model for the communication between two end users. Seven different layers make up the OSI model physical, data link, network, transport, session, presen tation, and application. This paper will cover the type of security that is associated with each level of the OSI model.Physical LayerThe physical layer is where the actual communication occurs between devices. The security of the physical layer pertains to the actual hardware. The vulnerabilities of the physical layer includePower outageEnvironmental control lossHardware theft, damage or destructionUnauthorized hardware changes (i.e. removable media, data connections)Detachment of the physical data linksUnnoticeable Data InterceptionKeystroke LoggingCertain measures can be implemented to ensure the physical layer is secure. This would be done by storing all hardware in a locked environment. The use of electronic locks would control and log all access to the room containing the hardware. The electronic locks could be a PIN and password or fingerprint scanner (biometrics). The use of video and audio surveillance would provide physical proof of unauthorized access that could co mpromise the hardware.Data Link LayerThe second layer of the OSI model is the data link layer. This is the layer that transports the data between network nodes in a wide area network (WAN) or on the same local area network (LAN) between nodes. The data link layer makes available the procedural and functional means to move data between network devices and could provide the measures to find and possibly correct errors that may occur in the physical layer. The security vulnerabi... ...on. This is to stop any unauthorized use of the network.ConclusionIn conclusion, the information covered in this paper shows the different types of security that is associated with each level of the standard OSI model. From the physical layer to the application layer, each layer has a different type of security which must be applied at each layer to prevent any security leaks, spoofing, and infinite loops. These are just a few of the different vulnerabilities that must be protected on a WLAN or LA N. ReferencesReed (November 21, 2003). Applying the OSI seven layer model to Information Security. Retrieved on January 11, 2008, from SANS Institute. Website http//www.sans.org/reading_room/whitepapers/protocols/1309.phpHaden (2008). The OSI Model. Retrieved on January 11, 2008, from Data Network Resource. Website http//www.rhyshaden.com/osi.htm