Implementing Different Set of Network Security Policies for a Well Infrastructure Campus Network

A typical college network has several number of sub-networks or subnets which corresponds to different departments or sections of the organization. These sub-networks are interconnected through Layer-3 network devices or routers. The services accessed by these sub-networks within the subnet internally and outside the subnets externally are usually governed by the set of network security policies. A network security for an organization at every level in day to day life is an important aspect. In order to provide the security for a college campus here in this paper a topology is designed and implemented with the set of network security policies. There are different levels of Access Control List-ACL rules for the student, staff and network administrator to protect their sub-network. To prevent unauthorized access to the resources, appropriate security policies have been implemented in the Campus Area Network-CAN. The network admin, teachers and the student uses the college resources provided by the two servers i. e. FTP-File Transfer Protocol server and the WEB server. To further enhance the security, the different methods of network security like use of separate subnets, VLAN, ACL, VTP, routing protocols, access control list etc. , have been used.