1. A Secure Intrusion-Detection System for MANETs using EAACK scheme 1 By Kshirsagar Sachin Laxman WCE sangli. 2. Content EAACK-Secure IDS For MANET's 2 Introduction Problem Statement Objectives Methodology References 3. Introduction to MANETs EAACK-Secure IDS For MANET's 3 Mobile Ad hoc Network(MANET) – collection of mobile nodes equipped with both a wireless transmitter and a receiver that communicate with each other via bidirectional wireless links No need of infrastructue Vulnerable to malicious attacks 4. Types EAACK-Secure IDS For MANET's 4 single-hop network: -Nodes communicate directly multi-hop network : -relay of messages by neighbors 5. IDS in MANET EAACK-Secure IDS For MANET's 5 Assumption that all nodes cooperate Significant impact if some nodes are compromised IDS work as a second layer in MANETS 6. IDS in MANET EAACK-Secure IDS For MANET's 6 Watchdog TWOACK AACK 7. Watchdog EAACK-Secure IDS For MANET's 7 Watchdog and pathrater capable of detecting malicious nodes misbehaviors in network if node fails to forward packet within time, increases failure counter 8. Problems with Watchdog EAACK-Secure IDS For MANET's 8 1. False Misbehavior : Node A sends back a misbehavior report even through node B forwarded the packet to C Fig:False Misbehavior 9. 9 2. Limited Transmission Power: Node B intentionally limits its transmission power EAACK-Secure IDS For MANET's 10. EAACK-Secure IDS For MANET's 10 3)Receiver collision 11. TWOACK EAACK-Secure IDS For MANET's 11 resolve receiver collision and limited transmission power problem 12. AACK EAACK-Secure IDS For MANET's 12 combination of TACK and end to end ACK first ACK is used if it fails switch to TACK 13. Digital Signature EAACK-Secure IDS For MANET's 13 Digital Signature is an authentication mechanism which Provide valid acknowledgement in manet. Fig: communication with Digital signature 14. Problem Statement EAACK-Secure IDS For MANET's 14 Design and implementation of an intrusion detection system for Mobile Adhoc Networks using EAACK scheme. 15. Objectives EAACK-Secure IDS For MANET's 15 Study of different Intrusion Detection Systems for MANETs Study of NS2 and other required softwares. Implementation of IDS for MANETs using EAACK scheme. Use of digital signatures in the EAACK scheme. Comparison of EAACK performance analysis with other contemporary approaches like ACK and TWOACK 16. EAACK EAACK-Secure IDS For MANET's 16 Enhanced Adaptive ACKnowledgement Solves 3 problems with watchdog EAACK consists of three major parts: 1.ACK 2.S-ACK 3.MRA 17. ACK EAACK-Secure IDS For MANET's 17 Basically end to end acknowledgement. Works as hybrid scheme in EAACK 18. S-ACK EAACK-Secure IDS For MANET's 18 improved version of TWOACK let every three consecutive nodes work in a group to detect misbehaving nodes. misbehavior report switch the system to MRA mode 19. MRA EAACK-Secure IDS For MANET's 19 resolve weakness of watchdog of detecting misbehaving nodes. a) Source node 1)checks local knowledge base 2)if no path use DSR and send MRA to destination b)Destination node 1)checks local knowledge base 2)if packet received then falsify the report 20. EAACK-Secure IDS For MANET's 20 21. Refferences EAACK-Secure IDS For MANET's 21 [1] EAACK – A Secure Intrusion Detection System for MANETs Elhadi M. Shakshuki, Senior Member, IEEE, Nan Kang and Tarek R. Sheltami, Member, IEEE [2]K. Liu, J. Deng, P. K. Varshney, and K. Balakrishnan, “An acknowledgment-based approach for the detection of routing misbehaviour in MANETs,” IEEE Trans. Mobile Comput., vol. 6, no. 5 pp. 536–550 [3] S. Marti, T. J. Giuli, K. Lai, and M. Baker, “Mitigating routing misbehaviour in mobile adhhoc networks,” in Proc. 6th Annu. Int. Conf. Mobile Comput. Netw., Boston, MA, 2000, pp. 255–265 [4] T. Sheltami, A. Al-Roubaiey, E. Shakshuki, and A. Mahmoud, “Video transmission enhancement in presence of misbehaving nodes inMANETs,” Int. J. Multimedia Syst., vol. 15 no. 5, pp. 273–282, Oct. 2009. [5] J.-S. Lee, “A Petri net design of command filters for semiautonomous mobile networks,” IEEE Trans. Ind. Electron., vol. 55, no. 4,pp. 1835–1841, Apr. 2008. [6] N. Kang, E. Shakshuki, and T. Sheltami, “Detecting forged acknowledgements in MANETs,” in Proc. IEEE 25th Int. Conf. AINA, Biopolis Singapore, Mar. 22–25, 2011, pp. 488–494. [7] Nat. Inst. Std. Technol., Digital Signature Standard (DSS) Federal Information Processing Standards Publication, Gaithersburg, MD, 2009, Digital Signature Standard (DSS). 22. EAACK-Secure IDS For MANET's 22 THANK YOU