Abstract
In emerging technology of Internet, security issues are becoming more challenging. In case of wired LAN it is somewhat in control, but in case of wireless networks due to exponential growth in attacks, it has made difficult to detect such security loopholes. Wireless network security is being addressed using firewalls, encryption techniques and wired IDS (Intrusion Detection System) methods. But the approaches which were used in wired network were not successful in producing effective results for wireless networks. It is so because of features of wireless network such as open medium, dynamic changing topology, cooperative algorithms, lack of centralized monitoring and management point, and lack of a clear line of defense etc. So, there is need for new approach which will efficiently detect intrusion in wireless network. Efficiency can be achieved by implementing distributive, co-operative based, multi-agent IDS. The proposed system supports all these three features. It includes mobile agents for intrusion detection which uses SNMP (Simple network Management Protocol) and MIB (Management Information Base) variables for mobile wireless networks.
Highlights
Active attacks are in the nature of eavesdropping on, or monitoring of, transmissions while passive attacks involves some modification of the data stream or creation of false stream.[6]
SNMP agent will extract the information from MIB variables
If the intrusion is detected by LIDS, it will generate alarm locally and message will be passed to all the nodes present in ad-hoc network using mobile agent
Summary
As large information is available on the network and it is possible to share this data through it, it should be secure. It is somewhat defined in wired network but in wireless there is great challenge of different attacks. Attack is an assault on system security that derives from an intelligent threat. It can be mainly classified as Active attacks and Passive attacks. Networks with firewalls or using strong encryption algorithm keys are longer effective This leads to the development of new architecture and mechanisms to protect wireless and mobile networks. An IDS is a software or hardware tool that monitors traffic on network looking for and logging threats. Any activity which is recorded beyond this traffic is considered as anomaly and alert is generated
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