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Page 556 / 944 Scroll up to view Page 551 - 555
Chapter 32 Content Filtering
ZyWALL USG 50 User’s Guide
556
External Content Filter Server Lookup Procedure
The content filter lookup process is described below.
Figure 317
Content Filter Lookup Procedure
1
A computer behind the ZyWALL tries to access a web site.
2
The ZyWALL looks up the web site in its cache. If an attempt to access the web
site was made in the past, a record of that web site’s category will be in the
ZyWALL’s cache. The ZyWALL blocks, blocks and logs or just logs the request
based on your configuration.
3
Use the
Content Filter Cache
screen to configure how long a web site address
remains in the cache as well as view those web site addresses (see
Section 9.16
on page 200
). All of the web site address records are also cleared from the local
cache when the ZyWALL restarts.
4
If the ZyWALL has no record of the web site, it queries the external content filter
database and simultaneously sends the request to the web server.
5
The external content filter server sends the category information back to the
ZyWALL, which then blocks and/or logs access to the web site based on the
settings in the content filter profile. The web site’s address and category are then
stored in the ZyWALL’s content filter cache.
Page 557 / 944
ZyWALL USG 50 User’s Guide
557
C
HAPTER
33
Content Filter Reports
33.1
Overview
You can view content filtering reports after you have activated the category-based
content filtering subscription service.
See
Section 10.1 on page 209
on how to create a myZyXEL.com account, register
your device and activate the subscription services.
33.2
Viewing Content Filter Reports
Content filtering reports are generated statistics and charts of access attempts to
web sites belonging to the categories you selected in your device content filter
screen.
You need to register your iCard before you can view content filtering reports.
Alternatively, you can also view content filtering reports during the free trial (up to
30 days).
1
Go to
Page 558 / 944
Chapter 33 Content Filter Reports
ZyWALL USG 50 User’s Guide
558
2
Fill in your myZyXEL.com account information and click
Login
.
Figure 318
myZyXEL.com: Login
Page 559 / 944
Chapter 33 Content Filter Reports
ZyWALL USG 50 User’s Guide
559
3
A welcome screen displays. Click your ZyWALL’s model name and/or MAC address
under
Registered ZyXEL Products
(the ZyWALL 70 is shown as an example
here). You can change the descriptive name for your ZyWALL using the
Rename
button in the
Service Management
screen (see
Figure 320 on page 560
).
Figure 319
myZyXEL.com: Welcome
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Chapter 33 Content Filter Reports
ZyWALL USG 50 User’s Guide
560
4
In the
Service Management
screen click
Content Filter
in the
Service Name
column to open the content filter reports screens.
Figure 320
myZyXEL.com: Service Management
5
In the
Web Filter Home
screen, click the
Reports
tab.
Figure 321
Content Filter Reports Main Screen

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