Netgear UTM25-100NAS ユーザーズマニュアル

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Content Filtering and Optimizing Scans

3. Click Apply to save your settings.

The UTM provides several options to filter unwanted content from e-mails. You can filter content 
from e-mails based on keywords in the subject line, file type of the attachment, and file name of 
the attachment. You can also set an action to perform on e-mails with password-protected 
attachments.

Several types of e-mail blocking are available:

•

Keyword blocking. You can specify words that, should they appear in the e-mail subject line, 
cause that e-mail to be blocked by the UTM.

•

Password-protected attachments. You can block e-mails based on password-protected 
attachments such as ZIP or RAR attachments.

•

File extension blocking. You can block e-mails based on the extensions of attached files. 
Such files can include, executable files, audio and video files, and compressed files.

•

File name blocking. You can block e-mails based on the names of attached files. Such names 
can include, for example, names of known malware threat such as the Netsky worm (which 
normally arrives as netsky.exe).

Subject

The default subject line for the notification e-mail is “Malware detected!” 
You can change this subject line.

Message

The warning message informs the sender, the recipient, or both about the 
name of the malware threat. You can change the default message to 
include more information.
Note: Make sure that you keep the %VIRUSINFO% meta word in a 
message to enable the UTM to insert the proper malware information. In 
addition to the %VIRUSINFO% meta word, you can insert the following 
meta words in your customized message:
%TIME%, %PROTOCOL%, %FROM%, %TO%, %SUBJECT%, 
%FILENAME%, %ACTION%, %VIRUSNAME%.