Data Protecting Against Flood Attacks

Abstract: Using the mobility of nodes and the opportunistic contacts among nodes the Disruption Tolerant Networks (DTNs) performs the data communications. DTNs are vulnerable to flood attacks in which attackers send as many packets or packet replicas as possible to the network, in order to overuse the limited network resources. The existing system adopts claim-carry-and check: each node itself counts the number of packets or replicas that it has sent and claims the count to other nodes; the receiving nodes carry the claims when they move and cross-check if their carried claims are inconsistent when they contact. It provides rigorous analysis on the probability of detection. But the time interval and rate limit are main issues in this scheme. So we propose the no rate limiting to defend against flood attacks in DTNs by sending data’s simultaneously with no time interval and no packets rate limit. The proposed scheme provides the effectiveness and efficiency with extensive result.

Keywords: Disruption Tolerant Network, Routing, Flood Detection, Security.