Task details:

Toyota Company, a prominent Japanese enterprise headquartered in Tokyo, is experiencing rapid growth

and aims to expand its business globally, including cities within Japan and Sydney, Australia. As an IT

specialist, your task is to design and implement a robust network infrastructure to support Toyota Company's

ambitious expansion plans. This assignment challenges you to address various technical and security

challenges while adhering to industry best practices in networking and cybersecurity.

Task $1$: Network Topology Design for Global Expansion

Your first task is to design a scalable and efficient network topology that connects Toyota Company's

headquarters in Tokyo with its branches in Kyushu, Hokkaido, and Sydney, Australia. Consider factors such

as inter$-$branch communication, Internet connectivity, and ease of management. You are required to provide

a detailed network diagram and rationale for the chosen topology.

Task $2$: Subnetting and IP Addressing with VLSM

Using Variable Length Subnet Masking $($VLSM$),$ allocate IP addresses to each branch's LAN, servers, and

links. Incorporate the provided IP address ranges and subnet the addresses efficiently to accommodate the

different user sets. Ensure seamless connectivity between Tokyo, other Japanese cities, and Sydney. Your

design should maximize IP address utilization while allowing for future growth.

Task $3$: VPN Implementation for Global Communication

Design and implement a Virtual Private Network $($VPN$)$ solution to securely connect all Toyota Company

branches across different cities and countries. Specify the VPN protocols, encryption mechanisms, and

authentication methods. Address the need for secure inter$-$branch communication and cost$-$effectiveness.

Task $4$: Wireless and Ransomware Attack Mitigation

Propose strategies to mitigate wireless attacks and ransomware threats that Toyota Company is currently

facing. Consider implementing strong encryption, intrusion detection systems, and regular security audits.

Describe how these measures will help safeguard the network and prevent unauthorized access and data

breaches.

Task $5$: Insider Threat Prevention and Monitoring

Develop a comprehensive plan to detect and prevent insider attacks within Toyota Company's network.

Include user behaviour analysis, access controls, and employee training to raise awareness about

cybersecurity risks. Detail the use of Security Information and Event Management $($SIEM$)$ tools to monitor and

identify suspicious activities.

Task $6$: Server Room and IDF$/$MDF Security

Outline security measures for the server rooms, Intermediate Distribution Frames $($IDF$),$ and Main Distribution

Frames $($MDF$)$ at each branch. Address physical and logical security controls, access restrictions, and

surveillance. Consider environmental factors to ensure optimal server performance and data integrity.

Task $7$: Intranet Development for Enhanced Collaboration

Design an Intranet solution that facilitates seamless communication and collaboration among Toyota

Company employees in Japan and Sydney. Specify the architecture, content management system, and key

features of the Intranet. Describe how it will enhance internal processes and information sharing.

Task $8$: Conclusion and Recommendations

Summarize your network design, security solutions, and Intranet development. Reflect on the challenges

encountered and lessons learned during the assignment. Provide recommendations for continuous

improvement, scalability, and future$-$proofing Toyota Company's network infrastructure.

Tokyo building $(53000$ users$),$ Kyushu building $(12000$ users$),$ Hokkaido building $(18700$ users$)$ and Sydney

building $(6300$ users$)$ with the private IP address of $10\mathrm{.}43\mathrm{.}62\mathrm{.}0/$

$8$