Design and Implementation of a Secure and Scalable LAN for a Midsized Company Using Cisco Packet Tracer

This project is the implementation and design of a secure and scalable local area network (LAN) for a midsized organization using Cisco Packet Tracer as the simulator software. The methodology involved eight key phases: requirement analysis, hierarchical network design, IP addressing and subnetting, device configuration, client installation, connectivity testing, troubleshooting, and final documentation. A Layered three-layer architecture (access, distribution, and core) was adopted to enhance manageability and performance. Security and segregation were enforced using VLANs and subnetting, while DHCP and static addressing were used to manage IPs effectively. Wired and wireless access was configured on devices, with separate SSIDs for employee and guest networks using WPA2 encryption. Routing protocols such as RIP and OSPF were used to facilitate effective inter-network communication. Extensive testing and optimization ensured the functionality, robustness, and scalability of the network. This deployment gives a good foundation for enterprise networking scenarios in real-world environments and offers a good foundation for future development