The emergence of OpenFlow-capable switches enables exciting new network functionality, at the risk of programming errors that make communication less reliable. The centralized programming model, where a single controller program manages the network, seems to reduce the likelihood of bugs. However, the system is inherently distributed and asynchronous, with events happening at different switches...

Software-defined networking (SDN) is an innovative architecture that separates the control plane from data to simplify and speed up management of large networks. This means logic has been moved network hardware level centralized level. Therefore, use OpenFlow Discovery Protocol (OFDP) one most common protocols used discover topology in a then transmit it for management. However, OFDP various sh...

Managing today’s computer networks is a complex and error-prone task. These networks consist of a wide variety of devices, from routers and switches, to firewalls, network-address translators, load balancers, and intrusion-detection systems. Network administrators must express policies through tedious box-by-box configuration, while grappling with a multitude of protocols and baroque, vendor-sp...

In this paper, we propose a new network architecture, Network Iron Curtain that can handle network scanning attacks automatically. Network Iron Curtain does not require additional devices or complicated configurations when it detects scanning attack, and it can confuse scanning attackers by providing fake scanning results. When an attacker sends a scanning packet to a host in Network Iron Curta...