Abstract
The Denial of service is a well-known security concern in wireless sensor networks. Although ZigBee protocol is designed by considering the security and lower battery consumption, still wireless sensor networks are vulnerable to so many denials of service attack, especially when nodes are deployed in the unattended environment. The attacker utilizes the vulnerabilities to launch, many Denial of Service Attacks in wireless sensor networks. In this paper, various approaches to defend from Denial of service attacks are described and an approach for detection and defending from both black-hole attack and worm-hole attack is proposed. The proposed methodology is less complex and easy to implement, also consumes less battery power, hence enhances network lifetime.
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