Chapter 15 Unified Threat Management for FortiOS 5.0 : Web filter : Overriding FortiGuard website categorization : Using Alternate Categories : Local Categories
  
Local Categories
User-defined categories can be created to allow users to block groups of URLs on a per-profile basis. The categories defined here appear in the global URL category list when configuring a web filter profile. Users can rate URLs based on the local categories.
Users can create user-defined categories then specify the URLs that belong to the category. This allows users to block groups of web sites on a per profile basis. The ratings are included in the global URL list with associated categories and compared in the same way the URL block list is processed.
The local assignment of a category overrides the FortiGuard server ratings and appear in reports as “Local” Categories or “Custom” Categories depending on the context.
Local categories are configured in the CLI.
To create a Local Category:
config webfilter ftgd-local-cat
edit local_category_1
set id 140
end
There is also a way to create a new category in the Web Based Manager.
Go to Security Profiles > Web Filter > Rating Overrides. In the process creating a new override, you can choose to override that URL to the Category “Custom Categories”. When you are choosing the Sub-Category from the drop down menu, the last item in the list will be Create New. If you select this item you will be given the option to fill out a field called Category Name. Just type in the name of the new category from this point on it will be listed in the Custom Categories of the Rating Overrides and as one of the Local Categories in the FortiGuard Webfilter.