Preventing campus network from excessive of unwanted packet traffic using VLAN technology

The internet has been established to provide wired or wireless online data trans-fer between devices that connected to networks. The purpose of this thesis is to estimate excessive unwanted Local Area Network (LAN) traffic and block it without using any traditional security devices. The pro-posed solution is formed from two parts. Network monitoring helps network employees to estimate excessive unwanted LAN traffic, so it is important for maintenance of online connectivity. Monitoring server is prepared with a few pieces of hardware and operating system. Some useful tools have been installed in order to monitor collected LAN performance measurements by means of reports and graphics. Moreover to obtain web-based graphics of network metrics, a software has been developed with Shell script, text processing language and server-side scripting language. Additionally we have prepared another software to take configuration and Address Resolution Protocol (ARP) table backup of switches automatically in predetermined time which transfers these backups in related date-time folder to Linux and Windows TFTP backup server. Switch security features and Access Control Lists (ACL) were used with assist of Virtual Local Area Network (VLAN) to block excessive unwanted traffic on backbone switch.