A Review: DoS and DDoS Attacks

Wireless sensor networks (WSNs) are a special type of Ad-hoc network. WSNs are easily subjected to intentional or unintentional attacks as compared to wired based networks. Denial of Service (DoS) attack is one of the main threats that the network is facing. DoS attack makes use of many hosts to send a lot of useless packets to the target in short time of invalid access which will consume the targets resources and causes outage of server operations. In this paper we will discuss various types of attacks on WSNs and emphasize on DoS attack. And will discuss smurf attack which is one of the DoS attack type.