Internship Report on Network Security System

Abstract

This internship report focuses on the practical application of network design, configuration, and security measures within the scope of tasks undertaken during the internship at Goinnovior Limited. During the project I worked with Cisco tools. I tried designing a medium office network in Packet Tracer. The plan used several subnets, a couple of routers, switches and a wireless link to make something secure. I also set up routing (RIP or maybe OSPF) and ran tests on IP addresses and subnetting to check end-to-end connectivity. Overall, the setup felt promising for later.Additionally, one part of the job was the firewall. The intern, maybe, set up rules in the Windows Defender Firewall Wizard. He tried to block HTTP on a few ports, but kept HTTPS open. To do that, he typed the protocols, then chose block for the connections. Testing followed, looking to see if traffic stopped as planned. Therefore, the network should be a little safer, while fast enough for users. In conclusion, the setup tries to boost security without hurting access. During the internship I got real‐world practice designing, configuring and (sometimes) securing an enterprise network. It may mean I learned how traffic flows, how security protocolswork, and why firewalls matter for blocking unwanted access. Those tasks, they show whyhands‐on skills matter for protecting today’s digital systems in the modern infrastructure.