Theend To Ende2esecurity Can Be Provisioned By Implementingm

Theend To Ende2esecurity Can Be Provisioned By Implementingmechan The End-to-End (E2E) security can be provisioned by implementing mechanisms and policies horizontally (Hosts-VLANS- BGP-BGP-VLANs-Hosts) and vertically (L1 through L7). As far as vertical implementation is concerned, we can put security mechanisms at various levels, as shown in Figure 1. We have covered Internet Protocol Security (IPSec) in Lecture 7, in which security mechanism is placed between Transport Control Protocol (TCP) and Internet Protocol (IP) layers. Network Approach Transport Approach ( HTTP FTP SMTP TCP AH ESP IP ) ( HTTP FTP SMTP SSL/TLS TCP IP ) ( SET PGP HTTP FTP SMTP TCP IP )Presentation Approach Application Approach ( Sâ−HTTP S/MINE TCP IP ) Figure 1: Placing Security Mechanisms Briefly describe (in your own words) the security mechanisms of the following protocols where we implement them at the: i. Transport layer: Secure Sockets Layer (SSL) [3] and Transport Layer Security (TLS) [1]. ii. Application layer: Secure Hypertext Transfer Protocol (S-HTTP) [5], SMINE (Minimal Encapsulation (MINE)) [4, 2]. iii. Presentation layer: Secure Electronic Transaction (SET) and Pretty Good Privacy (PGP) [2]. What is the difference between security mechanism and security policy? One has to strike a balance between network performance and security implementation. Which of the above security mechanisms puts more strain in performance as far as E2E security is concerned and why? **Assignment Overview** This assignment aims to explore various security mechanisms across different OSI model layers, understanding their operational principles, performance trade-offs, and the conceptual distinctions between security mechanisms and policies. It emphasizes analyzing how layered security strategies can be integrated within networks, ensuring data confidentiality, integrity, and authentication, while maintaining acceptable performance levels. ---