Quick Reference Guide

116 | Chapter 4. Content Filtering and Optimizing Scans
ProSecure Web/Email Security Threat Management (STM) Appliance
Configuring Web URL Filtering
If you want to allow or block internal LAN users from access to certain sites on the Internet,
use the STM’s Web URL filtering. You can create or import a whitelist that contains domain
names and URLs that are accepted, and a blacklist with domain names and URLs that are
blocked. The whitelist takes precedence over the blacklist.
Note: A URL that you enter on the whitelist or blacklist might contain other
embedded URLs such as URLs for advertisements or sponsors,
causing unexpected behavior. If you want to allow a URL by placing
it on the whitelist, make sure that all embedded URLs are also
placed on the whitelist. Similarly, if you want to block a URL by
placing it on the blacklist, make sure that all embedded URLs are
also placed on the blacklist.
Note: For information about creating custom categories that allow you to
set access exceptions for combinations of URLs, see Creating
Custom Categories for Web Access Exceptions on page 142.