Detection or Prevention of DDOS attack in WSN using Clustering

Wireless Sensor Network (WSN) is a large network of sensor nodes. Wireless Sensor Networks are very popular and have their special characteristics such as limited battery, limited power and limited storage that makes the energy consumption. Although there are some limitations, but there are many advantages of Wireless Sensor Networks. Some advantages are robustness, scalability, flexibility. WSN also reduces the cabling cost. Now a days WSN is mostly used in modern technologies to gain, the output in the most efficient way. Some applications of WSN are area monitoring, health care monitoring, Earth is sensing, Landslide detection etc. This paper presents a approach for detecting and preventing dos as well as gray hole attack.