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DFL-500 User Manual
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URL blocking does not block access to other services that users can access with a web browser. For
example, URL blocking does not block access to ftp://ftp.badsite.com . Instead, you can use firewall
policies to deny FTP connections.
• Select Enable to block the URL.
•
Select OK to add the URL to the URL block list.
You can enter multiple URLs and then select Check All
to activate all entries in the URL block list.
Each page of the URL block list displays 100 URLs.
• Use Page Down
and Page Up to navigate through the URL block list.
Enable URL Block must be selected at the top of the URL block list for web pages with banned URLs to be
blocked.
You can add URLs to the URL block list by entering them into a text file and then uploading the text file to
the DFL-500 NPG. See Uploading a URL block list
.
Clearing the URL block list
•
Go to Web Filter > URL Block .
• Select Clear URL Block List
to remove all URLs from the URL block list.
Changing the URL block message
To customize the message that users receive when the DFL-500 NPG blocks web pages.
•
Go to Web Filter > URL Block .
• Select Edit Prompt
to edit the URL block message.
• Change the text of the message. You can add HTML code to this message.
•
Select OK to save your changes.
The DFL-500 NPG display this message when a URL is blocked.
Downloading the URL block list
If you make changes to the URL block list using the web-based manager, you can download the list to a text
file using the following procedure:
•
Go to Web Filter > URL Block .
•
Select Download URL Block List
.
The DFL-500 NPG downloads the list to a text file on the management computer.
Uploading a URL block list
You can create a URL block list in a text editor and then upload the text file to the DFL-500 NPG. Add one
URL to each line of the text file. You can follow the URL with a space and then a 1 to enable or a zero (0) to
disable the URL. If you do not add this information to the text file, the DFL-500 NPG automatically enables all
URLs in the block list when you upload the text file.