Week 4 Discussion: Wireless Communications Supporting Activi

Week4 Discussionwireless Communicationssupporting Activity Introducti

Write a 100- to 200-word response to the following: 4 • After reviewing the concepts, pictorially model the TCP/IP protocol against the 7-layer OSI model. In your depiction, include the common protocol sections that fit in the various levels. Although the OSI model is most often associated with local area networks, it actually is used for all types of data communications. It's also important to remember that the OSI model is just that: an abstract model of how telecommunications is accomplished. It is not a picture of actual physical data communications, but a conceptual picture of how such communications work.

Supporting Activity: Introduction to Wireless Write a 100- to 200-word response to the following question: 5 Security on any network is a prime concern. On wireless networks, it is often a critical concern because the network transmissions are available to anyone within range of the transmitter with the appropriate antenna. On a wired network, the signals stay in the wires and can be protected by strong physical-access control. On a wireless network, sniffing is much easier because the radio transmissions are designed to be processed by any receiver within range. Furthermore, wireless networks tend to have fuzzy boundaries. A corporate wireless network may extend outside the building and in that case you need to put in place a good security plan in order to avoid unwanted users to be able to enter your network.

Paper For Above instruction

Modeling TCP/IP Against the OSI Protocol Model

The Transmission Control Protocol/Internet Protocol (TCP/IP) model, which is the foundational architecture of the internet, can be mapped against the OSI (Open Systems Interconnection) model to enhance understanding of how data communication occurs across networks. The OSI model comprises seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. Conversely, TCP/IP is a four-layer model: Network Interface, Internet, Transport, and Application.

At the Physical and Data Link layers of the OSI model, the TCP/IP Network Interface layer encompasses protocols such as Ethernet and ARP, which handle detecting networks and framing data for transmission over physical media. The Internet layer maps to the Network layer in OSI, with IP playing a central role in addressing and routing data across diverse networks. The Transport layer in TCP/IP aligns with the Transport layer of OSI, with TCP and UDP facilitating reliable and unreliable data transfer, respectively. Lastly, the Application layer of TCP/IP corresponds to the combined functions of the Session, Presentation, and Application layers of OSI, managing high-level protocols like HTTP, FTP, SMTP, and DNS, which provide services directly to user applications.

This layered approach in TCP/IP simplifies the design of network protocols and promotes interoperability, despite the OSI model being more comprehensive theoretically. The TCP/IP model's practical implementation has become predominant, especially in internet communications, while the OSI model remains valuable as an educational tool to understand and conceptualize network interactions.

Security Concerns in Wireless Networks

Wireless networks inherently pose significant security challenges due to their broadcast nature, which exposes transmitted data to potential eavesdropping or sniffing by anyone within range. Unlike wired networks, where physical access controls such as locked server rooms and cable management restrict unauthorized physical access, wireless signals propagate through open air, making them vulnerable to interception. This vulnerability necessitates robust security measures to safeguard sensitive information. Encryption protocols such as WPA3, WPA2, and protocols like AES (Advanced Encryption Standard) are critical in providing confidentiality to wireless transmissions.

Moreover, implementing strong authentication mechanisms, including WPA2 Enterprise with 802.1X, helps ensure that only authorized users can connect to the network. Network administrators should also employ tools such as wireless intrusion detection systems (WIDS) to monitor for suspicious activities and unauthorized devices. Boundary control can be fuzzy as wireless signals may extend beyond the physical premises, making it crucial to implement physical and logical security controls, like disabling SSID broadcasting, MAC address filtering, and deploying all necessary security policies. These measures are vital to prevent external threats and unauthorized access, preserving the integrity and confidentiality of organizational data.

Conclusion

Effective security on wireless networks involves a layered approach that combines encryption, authentication, physical boundary controls, and continuous monitoring. As wireless communication becomes increasingly integral to organizational operations, diligent security planning is essential to mitigate vulnerabilities and protect against malicious attacks, ensuring that wireless networks maintain both accessibility and security.

References

• Comer, D. E. (2018). Internetworking with TCP/IP: Principles, Protocols, and Architecture. Pearson.
• Stallings, W. (2017). Wireless Communications & Networks. Pearson.
• Odom, W. (2019). CCNA Routing and Switching 200-125 Official Cert Guide. Cisco Press.
• Rescorla, E. (2008). SSL and TLS: Designing and Building Secure Systems. Addison-Wesley.
• Sharma, P., & Khandelwal, S. (2021). Security Challenges in Wireless Networks: A Review. Journal of Network and Computer Applications, 182, 103060.
• Chen, C., & Mathew, S. (2020). Wireless security standards and best practices. IEEE Communications Surveys & Tutorials, 22(1), 547-565.
• Raghavan, V. (2022). Advanced Wireless Security: Threats and Solutions. Cybersecurity Journal, 3(2), 78-89.
• Mandhane, S., & Patel, N. (2019). An overview of wireless security protocols. International Journal of Wireless & Mobile Networks, 11(4), 15-25.
• Kim, H., & Lee, J. (2018). Enhancing wireless network security with intrusion detection systems. Security and Communication Networks, 2018, 1-12.
• Liu, Y., & Jiang, X. (2020). Physical and MAC layer security in wireless communications. IEEE Wireless Communications, 27(4), 64-71.