The security is the main problem in the mobile ad-hoc network. In MANNET node looks like selfishness. A node can use the resources of other node and preserve the resources of own. This type of node creates the problem in MANET there are a number of ways, which guarantee for the safety and security of your network. Perform the following to avoid security loopholes. Must have an updated antivirus program. Don’t provide more or unwanted access to any network user. Operating system should be regularly updated.