Software-Defined Networking is a rising concept that aims to replace conventional networks by breaking up vertical integration. The control logic of network is separated from the underlying routers and switches, by logically centralized network control, and to program the network. An intrusion detection system is a software application that keeps track of a system or network for occurrence of any policy violations or malicious activity. Reports are sent to the network administrator or collected centrally using a security information and event management system when there is an occurrence of a malicious activity or policy violations. The aim of this paper is to create an Intrusion Detection System using Snort which is an open-source, free and lightweight application. The concept of the paper is to build an efficient and simplified Intrusion Detection System. First,setup a simple network topology with four virtual machines where three of them are hosts and fourth one is designed to run Snort. © 2020 Seventh Sense Research Group. All rights reserved.