Design and Modeling of a Corporate Network Using VLAN and ACL to Enhance Network Security

This paper presents the design and modeling of a secure corporate network architecture using VLAN segmentation and Access Control Lists (ACLs). The main objective of the study is to enhance network security, improve traffic management, and minimize unauthorized access. The proposed model demonstrates how VLANs can be effectively used to separate departments logically while maintaining efficient inter-VLAN communication through Layer 3 devices. ACLs are implemented to restrict sensitive data flow and enforce network policies. The results show that the designed network provides improved security, scalability, and performance suitable for modern enterprise environments.