Network Security and Cryptography Techniques

The computer network technology is developing rapidly, and the development of internet technology is more speedily, people more aware of the significance of the network security. Network security is main issue of computing because many types of attacks are increase day by day. The wicked nodes create a problem in the network. This spiteful nodes acts as selfishness, It can use the funds of other nodes and preserve the resources of its own. After analyzing and quantifying the network in rank security elements confidentiality, reliability and convenience, this paper describes the network security secrecy vector, network safety integrity vector and network security availability vector; also we close at hand some major type of attacks in MANET.