Security equipment in ad hoc networks

Due to the inherent quality of wireless mobile networks and the lack of center control units, the security is always a weak point for ad hoc networks. We propose a new concept, that is, the security equipment in ad hoc networks. We consider that a user can use an infrastructure ad hoc without completely putting his resources to the network. He can become invisible at the routing level without loss his abilities of receiving and sending. Thus he well be protected at the equipment level.