This website uses cookies to ensure you have the best experience. Learn more

Security And The Osi Model Essay

1605 words - 6 pages

Abstract

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, presentation, and application. This paper will cover the type of security that is associated with each level of the OSI model.

Physical Layer
The 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 include:
• Power outage
• Environmental control loss
• Hardware theft, damage or destruction
• Unauthorized hardware changes (i.e.; removable media, data connections)
• Detachment of the physical data links
• Unnoticeable Data Interception
• Keystroke Logging
Certain 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 compromise the hardware.

Data Link Layer
The 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 vulnerabilities associated with the data link layer are:
• One device may claim to be a different device by spoofing the MAC address
• Spanning Tree errors could be introduced either accidental or on purpose causing packets to transmit in infinite loops.
• Switches could flood all traffic to the VLAN ports and not forward to the proper port. This could result in data being intercepted by any device that is connected to the VLAN.
• Stations could be force direct communication with other stations which ends up bypassing subnets and firewalls.
• Weak authentication and encryption on a wireless network could allow for unauthorized connections to the network, data and devices.
Data link layer controls can be implemented to ensure the security of the transmissions. By using MAC address filtering the stations are identified by not only the MAC address but are cross-referenced with the logical access or physical port. Firewalls should be between layers, ensuring physical isolation from one another. Wireless application must be monitored consistently and carefully for unauthorized access. In order to secure the wireless network, the use of the built-in encryption, authentication, and MAC filtering must be implemented with...

Find Another Essay On Security and the OSI Model

Tuckman’s Model and the Nadler and Tushman Model

1288 words - 5 pages Tuckman’s Model and the Nadler and Tushman Model Bruce Tuckman first developed Tuckman’s forming, storming, norming and performing model in 1965. Later on in 1977, Tuckman and Mary Ann Jensen jointly added adjourning stage. Tuckman’s theory is a helpful and elegant illustration of team behavior and development. The model explains that as team abilities mature, relationships are forged and the leader changes the style of leadership. The leader

Bowen’s Family Theory Transgenerational Model, and The Structural Model

2430 words - 10 pages This paper will look at the following family by correlating Bowen’s Family Theory Transgenerational Model, and The Structural Model. The subjects of the case are Jan and John. The study describes the couple as Caucasians of Polish descent, both on their first marriage; they share three adult children who live in the same household. Their youngest child is a single mother with a four-year-old child. This couple is seeking marriage therapy for

Security, commerce and the int

1123 words - 4 pages Security, Commerce and the Internet As the internet/world wide web (www), gradually became more available to ordinary computer users, it was obvious that it would become a target market for commercial retailers, financial services, etc. The benefits to seller and buyer are readily apparent - shopping and banking from home; travel arrangements; ticket reservations; and holidays can all be purchased quickly and accurately. Access to a

Security and The International System

790 words - 3 pages States saw no reason to become a threat allowing other power to bandwagon with the United States in accordance with Stephen Walt’s balance-of-threat thesis. Through the containment of the Soviet Union, these institutions took root and created a convergence of the world’s nations under the United States. With the only potential rival collapsing in 1991, the security of the United States military allowed nations to focus resources on economic

The History of Social Security and Social Security Administration

1452 words - 6 pages Social Security and Social Security Administration Michael Jones worked his whole life. At the age of 15 he started as a dishwasher at a restaurant a mile away from his house. He never graduated high school because he had to quit school to help his single mom support a family of six. There were many times in his life where he worked two jobs, but at minimum-wage, if that, 80 hours a week still did not go far. By the age of 20 he was married, and

The classical model and the great depression

2084 words - 8 pages each job. This caused production to skyrocket, lowering costs, and therefore increasing profits. Henry Ford spent his increased profits on his consumers and employees. Not only did he lower the cost of the model T from $5,000 to $300, but he also doubled his employees' wages. Dance marathons were another popular thing to spend money on. These marathons would last months at a time. A person could go for only a quarter and stay as long as they

Henry ford and the Model T Ford

1102 words - 5 pages hour (Mitchell,34). People became less concerned with what a car looked like and judged each other on how fast their car went. This behavior became less frequent when cars became even more of a necessity than a play toy. Years after the success of the Model T, Ford created the Model A. This new car pumped out forty horse power. Ford made two million model a cars in 1929. The lines of the Model A suggested those of its richer relative lincoln-so

Model Minorities and The Joy Luck Club

1019 words - 5 pages promise of the American Dream, children of Chinese immigrants suffer from many problems arising from the many stereotypes and their misrepresentation as a “model minority” by native-born Americans. Amy Tan exemplifies this discrepancy between Chinese and American views on Chinese American children in The Joy Luck Club. The American Dream is not fruitful for immigrants of color because they are misnomered as model minorities, despite the

Health and Society: The Health Belief Model

2354 words - 9 pages interplay of numerous other factors that ultimately influences a particular health behaviour; these include social, cultural and environmental influences. All these stimuli interact and result in a set of beliefs that provides the basis for why individuals act the way they do. The Health Belief Model (HBM) is a psychological model that attempts to explain and predict health behaviors by focusing on the attitudes and beliefs of individuals (Health

Relationship and Attraction: The Attraction-Similarity Model

1838 words - 7 pages rest of the world what is it that separates a couple? Could it be associated with the fact that the number one argument couples have is about money( ) ? Why do some marriages last and others end? These are the questions and theories I have searched for. From my research I have investigated different theories pertaining to this issue. The theory most often noted in this issue is the attraction-similarity model. This theory states that the more

Neuroticism and The Five Factor Model

2607 words - 10 pages Neuroticism boldly contrasts with the other personality traits in the Five Factor Model for personality (Openness, Agreeableness, Extraversion, Contentiousness, and Neuroticism). An individual being high in any of the other four traits could hardly be considered pathological. For example, high levels of agreeableness, within reason, would probably be considered to be a positive and healthy characteristic. However, the discussion regarding

Similar Essays

Security And The Osi Model Essay

1411 words - 6 pages Security and the OSI Model Network security is a topic that reaches far beyond the realm of firewalls, passwords, and user ID accounts. For a network and data to remain secure there must be protective measures at each level in the OSI interconnect model. While each layer basically operates autonomously of the other it is important to ensure that the data being transmitted from the host to destination has not been tampered with or is being

How The Osi Model Works Essay

600 words - 2 pages I will try to explain how the OSI model works so that itis easier to understand for those that have trouble withthe concept. Think of communications in terms of people.Each person that you talk to is like a computer with itsown capacity to compute and / or calculate information.If I speak directly with you and share information, thatis like a peer to peer network. There really isn'tany "hardware" at the physical layer involved to conductthis

The Main Benefits Of The Osi Model

585 words - 2 pages The main benefits of the OSI model include the following: • Helps users understand the big picture of networking • Helps users understand how hardware and software elements function together • Makes troubleshooting easier by separating networks into manageable pieces • Defines terms that networking professionals can use to compare basic functional relationships on different networks • Helps users understand new

Shedding The Light On The Network, Transport And Application Layer Protocols Of Osi Model

2406 words - 10 pages Executive Summary This report is a response to an individual assignment to partially fulfill the requirements of (TN6384 Computer Network) module. It aims to shed the light on the Network, transport, and application-layer protocols of OSI Model. The report begins with presenting a relevant background to the topic, presenting the historical perspective of OSI protocols. In addition, it explains the purpose and importance of these protocols