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Note! For
complete SonicWALL CFS Premium instructions, see the SonicWALL Content
Filtering
Service Premium Administrator's Guide at www.sonicwall.com/support/contentfilter_doc.html.
Select SonicWALL from the Content Filter Type menu.
Select the network interface(s) that you want to apply SonicWALL CFS protection.
Click Configure to display the SonicWALL Filter Properties window.
If Server is unavailable for (seconds) - Sets the amount of time after the content filter server is unavailable before the SonicWALL takes action to either block access to all Web sites or allow traffic to continue to all Web sites.
Block traffic to all Web sites - Select this feature if you want the SonicWALL to block all Web site access until the content filter server is available.
Allow traffic to all Web sites - Select this feature if you want to allow access to all web sites when the content filter server is unavailable. However, Forbidden Domains and Keywords, if enabled, are still blocked.
Configures the URL Cache size on the SonicWALL. The default Cache Size (KBs) is 512.
Tip!
A larger URL Cache size can provide noticeable improvements in Internet browsing
response times.
If you believe that a Web site is rated incorrectly or you wish to submit a new URL, you can click the here link to display the SonicWALL CFS URL Rating Review Request form for submitting the request.
SonicWALL CFS Premium with the blocking of all 56 categories is activated by default for all users on the network. You customize the enforcement of CFS Premium modifying the default CFS Premium policy to tailor your content filtering service.
Note! The time of day restrictions only apply to Content Filtering,
Customized and Keyword blocking, Consent and Restrict Web Features are not affected.
Always - When selected, Content Filtering is enforced at all times.
From/To - When selected, Content Filtering is enforced during the time and days specified. Enter the time period, in 24-hour format, and select the starting and ending day of the week that Content Filtering is enforced.
Tip!
Content filtering policies are applied to user groups in the User>Local
Groups page.
If you believe that a Web site is rated incorrectly or you wish to submit a new URL, you can click the here link to display the SonicWALL CFS URL Rating Review Request form for submitting the request.
You can customize your URL list to include Allowed Domains and Forbidden Domains. By customizing your URL list, you can include specific domains allowed (assessed) or forbidden (blocked), and include specific keywords to block sites.
Select the Enable Allowed/Forbidden Domains check box to activate this feature.
To allow access to a Web site that is blocked by SonicWALL CFS, click Add in the Allowed Domains, and enter the host name into the Domain Name field, and click OK. Up to 256 entries can be added to the Allowed Domains list.
To block a Web site that is not blocked by the SonicWALL CFS, click Add in Forbidden Domains and enter the host name in the Domain Name field, and click OK. Up to 256 entries can be added to the Forbidden Domains list.
To block a Web site that is not blocked by SonicWALL CFS, click Add in Forbidden Domains and enter the host name in the Domain Name field, and click OK. Up to 256 entries can be added to the Forbidden Domains list.
To remove an allowed or forbidden domain, select it from the appropriate list, and click Delete.
Alert!
Do not include the prefix “http://” in either the Allowed Domains or
Forbidden Domains fields. All subdomains are affected. For example, entering
“yahoo.com” applies to “mail.yahoo.com” and “my.yahoo.com”.
Disable all web traffic except for Allowed Domains - When selected, SonicWALL CFS only allows Web access to sites on the Allowed Domains list. With careful screening, this can be nearly 100% effective at blocking pornography and other objectionable material.
To enable blocking using keywords, select the Enable Keyword Blocking check box. Click Add and enter the keyword to block in the Keyword field, and click OK.
To remove a keyword, select it from the list and click Delete.
Tip!
Customized domains and keywords do not have to be reentered when the SonicWALL
CFS is updated each week and do not require a URL list subscription.
The Consent tab allows you to enforce content filtering on designated computers and provide optional filtering on other computers. Consent can be configured to require the user to agree to the terms outlined in an Acceptable Use Policy window before Web browsing is allowed.
To enable the Consent properties, select Require Consent.
Maximum Web usage - In an environment where there are more users than computers, such as a classroom or library, time limits are often imposed. The SonicWALL can be used to remind users when their time has expired by displaying the page defined in the Consent page URL field. Enter the time limit, in minutes, in the Maximum Web usage (minutes) field. When the default value of zero (0) is entered, this feature is disabled.
User Idle Timeout (minutes) - After a period of Web browser inactivity, the SonicWALL requires the user to agree to the terms outlined in the Consent page before accessing the Internet again. To configure the value, follow the link to the Users window and enter the desired value in the User Idle Timeout section.
Consent page URL (optional filtering) - When a user opens a Web browser on a computer requiring consent, they are shown a consent page and given the option to access the Internet with or without content filtering. You must create this Web (HTML) page. It can contain the text from, or links to an Acceptable Use Policy (AUP). This page must contain links to two pages contained in the SonicWALL, which, when selected, tell the SonicWALL if the user wishes to have filtered or unfiltered access. The link for unfiltered access must be <192.168.168.168/iAccept.html> and the link for filtered access must be <192.168.168.168/iAcceptFilter.html>, where the SonicWALL LAN IP Address is used instead of "192.168.168.168".
Consent Accepted URL (filtering off) - This is the URL within the SonicWALL that turns off filtering for a user who has clicked that link on the Optional Filtering page. The URL is <192.168.168.168/iAccept.html>, and should be changed to reflect the actual LAN IP address of the SonicWALL in use.
Consent Accepted URL (filtering on) - This is the URL within the SonicWALL that turns on the filtering for a user who has clicked on that link on the Optional Filtering page or on a Mandatory Filtering page. The URL is <192.168.168.168/iAccept.html>, and should be changed to reflect the actual LAN IP address of the SonicWALL in use.