MANET Security Schemes

There have been various security measures proposed for protect Mobile Ad Hoc Networks (MANET). These can be categorized in two main of security measures. That is Prevention and Detection/Reaction mechanisms. Prevention mechanisms are considered as the premier defense line against attackers. On the other hand Intrusion Detection Systems (IDS) is second layer of security to defense the attacks that happen in depth. However, Clearly the problem is so broad that there is no way to devise a general solution. It is also clear that different applications will have different security requirements. This paper present prevention mechanism which are considered as the premier defense line against attackers. In Prevention mechanisms there is require for encryption techniques to provide authentication, confidentiality, integrity and non-repudiation of routing information. Various secure routing protocols proposed for MANET are investigated as well as the kinds of attacks that they can be protect.