The firewall comes with a default profile that blocks threat-prone categories, such
as malware, phishing, and adult. You can use the default profile in a Security policy
rule, clone it to be used as a starting point for new URL Filtering profiles, or add a
new URL Filtering profile. You can customize newly-added URL Filtering profiles and
add lists of specific websites that should
always be blocked or allowed. For example, you can block the social-networking category
but allow access to specific websites in that category. By default, site access for all
URL categories is set to allow when you
create a basic URL
Filtering profile. This means that users will be able to browse to all sites
freely and the traffic is not logged.