SECURE ROUTING AGAINST WORMHOLE ATTACK IN MANETs

The abstract describes a secure routing algorithm designed to detect and prevent wormhole attacks in Mobile Ad hoc Networks (MANETs). The proposed algorithm utilizes a threshold-based approach to detect malicious links, where suspicious nodes are added to a suspicious list and their shortest paths to the destination are calculated. One-hop true neighbors are then queried for alternative paths to the suspicious node that are not direct, and if any path is less than the threshold value, the link is declared safe. Otherwise, the link is declared malicious and the presence of an attack is reported. The proposed algorithm is evaluated through simulations and compared with other existing algorithms, and results show that it effectively detects and prevents wormhole attacks in MANETs with high accuracy and low overhead.