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Page 291 / 428 Scroll up to view Page 286 - 290
Web Filtering
Chapter 13: Using Subscription Services
277
Note:
The Web Filtering subscription service differs from Web rules in the following
ways:
•
The category-based Web Filtering service is subscription-based and
requires a connection to the Service Center, while Web rules are
included with the ZoneAlarm router.
•
The category-based Web Filtering service is centralized, extracting
URLs from HTTP requests and sending the URLs to the Service Center
to determine whether they should be blocked or allowed. With Web
rules, HTTP requests are analyzed in the gateway itself.
•
The Web Filtering service is category based; that is, it filters Web sites
based on the category to which they belong. In contrast, Web rules
allow and block specific URLs.
You can use either content filtering solution or both in conjunction. When a user
attempts to access a Web site, the ZoneAlarm router first evaluates the Web rules.
If the site is not blocked by the Web rules, the Web Filtering service is then
consulted. For information on Web rules, see
Using Web Rules
on page 187.
Enabling/Disabling Web Filtering
To enable/disable Web Filtering
1.
Click
Services
in the main menu, and click the
Web Filtering
tab.
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Web Filtering
278
Check Point ZoneAlarm User Guide
The
Web Filtering
page appears.
2.
Drag the
On/Off
lever upwards or downwards.
Web Filtering is enabled/disabled.
Page 293 / 428
Web Filtering
Chapter 13: Using Subscription Services
279
Selecting Categories for Blocking
You can define which types of Web sites should be considered appropriate for your family
or office members, by selecting the categories. Categories marked with
will remain
visible, while categories marked with
will be blocked and will require the
administrator password for viewing.
Note:
If the ZoneAlarm router is remotely managed, contact your Service Center
administrator to change these settings.
Note:
The list of supported categories may vary, depending on the Service Center to
which the ZoneAlarm router is connected.
To allow/block a category
1.
Click
Services
in the main menu, and click the
Web Filtering
tab.
The
Web Filtering
page appears.
2.
In the
Allow Categories
area, click
or
next to the desired category.
Configuring Web Filtering Advanced Settings
Note:
If the ZoneAlarm router is remotely managed, contact your Service Center
administrator to change these settings.
To configure Web Filtering advanced settings
1.
Click
Services
in the main menu, and click the
Web Filtering
tab.
The
Web Filtering
page appears.
2.
Next to the
Bypass scanning if Service Center is unavailable
option, specify
how the gateway should handle Web Filtering when the service is enabled and
the Service Center is unavailable, by doing do one of the following:
•
To temporarily block all connections to the Internet, click
.
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Web Filtering
280
Check Point ZoneAlarm User Guide
This ensures that users will not gain access to undesirable Web sites, even when
the Service Center is unavailable.
The button changes to
.
•
To temporarily allow all connections to the Internet, click
.
This ensures continuous access to the Internet.
The button changes to
.
When the Service Center is available again, the gateway will enforce the configured
Web Filtering policy.
Temporarily Disabling Web Filtering
If desired, you can temporarily disable the Web Filtering service.
To temporarily disable Web Filtering
1.
Click
Services
in the main menu, and click the
Web Filtering
tab.
The
Web Filtering
page appears.
2.
Click
Snooze
.
•
Web Filtering is temporarily disabled for all internal network computers.
Page 295 / 428
Web Filtering
Chapter 13: Using Subscription Services
281
•
The
Snooze
button changes to
Resume
.
•
The
Web Filtering Off
popup window opens.
3.
To re-enable the service, click
Resume
, either in the popup window, or on the
Web Filtering
page.
•
The service is re-enabled for all internal network computers.
•
If you clicked
Resume
in the
Web Filtering
page, the button changes to
Snooze
.

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