Mobile ad hoc network is dynamic in nature and vulnerable for several attacks to be arising in it. Mobile nodes frequently disconnect and join the network; they can arbitrarily moves from one place to another. There are several attacks in MANET. One of the attacks is Black hole attack, it is a kind of active attack, it drops the entire incoming packet between one source and destination. Black Hole nodes or Black Holes actually send a fake RREP packet and advertise itself as the shortest route is found. Sender starts transmitting packets to Black Hole, But packet do not reach the destination node on account of this attack and data packets are also lost .In our work we tried to secure the AODV protocol, so that it can withstand the attack by adding an IDS_node to AODV protocol. We have seen that packet drop ratio is decreased by desirable amount. This will help to improve the performance of Mobile Ad hoc network and decrease the Packet loss ratio, which increased due to the attack. There are lots of detection and defense mechanisms to eliminate the intruder that carry out the Black Hole attack. In this paper, we simulated the attack in various wireless ad-hoc network scenarios and have tried to find a response system in simulations. General TermsMANET, IDS_Node
In Wireless technologies are able to provide mobility and portability that makes it more attractive as compared to wired technologies. WIMAX (Worldwide Interoperability for Microwave Access) is a telecommunications protocol that provides fixed and fully mobile internet access. Wired network refers to interoperable implementations of the IEEE 802.3 and WIMAX which refers to interoperable implementations of the IEEE 802.16 wireless-networks standard. A LAN (wired) is a data transmission system designed to provide location dependent network access between computing devices by using a cable infrastructure. The radio range and data rate of WIMAX are much better then Wired network but, on the basis of cost WIMAX is expensive. Now this paper proposed a new hybrid network that is the communication between two different technologies on the basis of Foreign Agent (FA), Home Agent (HA) and Mobile Host (MH). Now the FA is worked as a interface in between wired and WIMAX network and FA is connected with wired network to synchronize the communication with WIMAX, first the request is goes to FA then to network. The combinations of these two technologies are not very expensive and also better than wired. In previous there is no such work done on Wired-WIMAX hybrid network. Their performance will be measure on the basis of performance metrics.
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