This type of Management includes process of calculating and access to information over the network and looking after protection. There are different layers of Security management firstly intrusion prevention deals with blocking users who are trying to connect to network. Secondly Firewall and VPN protects the incoming and outgoing data, thirdly e-mails filtering and web content filtering also comes under security management. Fourthly Antivirus protection is for inside of the network where internal data is monitor of virus. Finally at the core of security management there are two process event management and vulnerability scanning which is delth with personal computers of individual users.