Chapter 13 Content Access Control
P-662H/HW-D Series User’s Guide
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13.2.2.1 Available Services
The Available Services list box in the Services screen displays some predefined services that
the ZyXEL Device supports. The following table shows a list of services that can be
configured. Next to the name of the service, two fields appear in brackets. The first field
indicates the IP protocol type (TCP, UDP, or ICMP). The second field indicates the IP port
number that defines the service. (Note that there may be more than one IP protocol type. For
example, look at the default configuration labeled “(DNS)”.
(UDP/TCP:53) means UDP port 53
and TCP port 53. See Appendix F on page 423 for more information on commonly used
services.
13.2.3 Configuring Web Site Filters
Use this screen to enable content filtering and to configure URL keyword blocking for a user
group. Click Edit under Web Browsing in the Content Access Control: General screen. A
screen displays as shown next.
Figure 115 Content Access Control: General: Web Site Filter
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