D-Link NetDefend SOHO DFL-160 User Manual page 57

4.6.1. Options
B. Web Content Filter
The option here is to enable or disable web content filtering. Note that HTTP and HTTPS traffic (or
all traffic) should be allowed in the outgoing traffic options for the LAN or DMZ interfaces for
clients on those networks to able to reach the public Internet.
C. Categories
The administrator adds the categories that are to be blocked from the choices in the left table to the
selected list in the right. In most cases the category description should be self-explanatory.
D. Options
There are three further options which can be selected when WCF is enabled as shown below.
• Non-Managed Action
If a URL is not found in the WCF database (and is therefore not "classified") then the default
action is allow access anyway. The administrator can decide, however, to block any unclassified
URLs.
• Allow Override
With this option, a web page is displayed to the user to indicate that they are trying to access a
URL which has been "flagged" by the WCF database. There is a link on the page, however,
which allows them to continue on to the URL.
This option is useful to draw users attention to the fact that their web surfing is being monitored
but not is still intrusive enough to totally block their surfing.
Blocking all flagged URLs in all undesirable categories at once can sometimes result in strong
protests from an internal web surfing community and it is therefore often advisable to introduce
blocking gradually.
• Allow Reclassification
This option displays a web page that shows a URL has been "flagged" by the WCF database and
gives the user a link to request "reclassification" of the URL. This option provides users a way to
give feedback when they believe the WCF subsystem is incorrectly classifying URLs.
E. Static URL Filters
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Chapter 4. The Firewall Menu