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Custom Categories and Third-Party Block Lists

Web Filtering Proxy can also use various third party block lists and custom categories to block connections to specific domains. To configure custom categories, navigate to Proxy Settings / Custom Categories page as shown on the following screenshot.

Custom Categories in Proxy Settings

Use Add New, Edit or Remove buttons at the bottom of the form to add new third party definition, edit existing one or remove selected ones altogether.

Add New Custom Category

When adding a new definition the following information needs to be specified.

Name Description and Example
Unique Definition ID This is a unique ID of the definition. For example, definition1. This id will be used as a folder where contents of the definition file will be stored, for example C:\ProgramData\Diladele\WebProxy\4.3\var\spool\custom_categories\definition1.
Definition Format Currently the application supports two formats, domains where each line of file contains a domain name and hosts where each line of file contains an IP address, followed by the domain name. Only domain name is used for blocking in each case.
Title Title of the third party definition for your own reference
Comment Comment for your own reference
Site URL The main address of the site which manages this third party definition.
Source URL The URL to download the definition from, for example https://raw.githubusercontent.com/StevenBlack/hosts/master/alternates/social-only/hosts. Every day updater process will download this file into the system, parse it and tell the proxy to use it in blocking algorithms.

When user tries to access a site, which is blocked by the third party list, the following blocked page will be shown.

Blocked Custom Category

The blocked page clearly indicates the reason for blocking as module_categories_custom.

Scanned By          module_categories_custom
Detection Results   block
Detection Info      example.com stevenblack_fakenews

Database folder for the third party definitions is stored in C:\ProgramData\Diladele\WebProxy\var\spool\custom_categories and automatically updated once per day. No additional administrative actions are required.