Security Settings: Security Settings has two mode for operation. Positive Security mode, block every think which is not classified or firstly seen in addition to blocked categories, and Negative Security mode, in which only blocked categories will be block but unclassified or firstly seen request will not blocked. Security Settings contains four main groups and categories, which are classified based on content, under the groups. These groups are , Malicious Categories, Harmful Categories,Variable Categories and Safe Categories. Under each group, you can block or allow user traffic based on category information.