Software Defined Network (SDN) is a developing innovation which actualizes the decoupling of the control plane from the system components, for example, switches or switches and keeps just the information plane with them. This separation provides a more efficient method for development of more complex and advanced applications that are not vendor specific. In SDN, the control plane which decides how to forward the packets is separated from the network elements and hence the forwarding decisions are made only at SDN Controller, with exceptions when the Network Administrator leaves some control functions to the forwarding elements. In this paper, effort has been made to mitigate two major layer two attacks which are common. A Port Blocker and VLAN Application is written and tested in a POX controller based environment all simulated in Mininet and tested to determine their efficacy. © 2016, International Journal of Pharmacy and Technology. All rights reserved.