Abstract: Wireless Networking is a technology in which two or more computers communicate with each other using standard network protocols but without using cables. In this we work based on MANET. MANET stands for Mobile Ad hoc Network. is a robust infrastructure less wireless network. It can be formed either by mobile nodes or by both fixed and mobile nodes. It has a limited physical security. There may be various types of Attacks like Black hole attack, Eavesdropping, jamming, Selective Packet Drop Attack. There are various existing Techniques like key distribution, monitoring mode etc. which have disadvantages like less throughput, packet loss, average delay. In our technique we will increase throughput, and minimize packet loss and average delay.

Keywords: MANET, Eavesdropping, jamming.