Steps; Smtp Filters - D-Link DFL-900 User Manual

Part VI
Content Filters

22.4 Steps

22.4.1 SMTP Filters

Step 1 – Enable SMTP Filters
Check the Enable SMTP Proxy checkbox and
click Apply.
While enabling the SMTP filter feature. All the
configured firewall rules (LAN à WAN SMTP) will
be disabled immediately. Subsequently the LAN
user access internet mail will take over by the
"SMTP filter".
FIELD
Enable SMTP Proxy
Append ".bin" to E-mail
attachments whose
Step 2 – Add a SMTP Filter
Select filename extension, enter vbs, and
click Add to add a rule. This rule will apply to all
LAN-to-DMZ/WAN SMTP connections. All such
SMTP traffic will be examined to change the
filename extension from vbs to vbs.bin.
Note that the filename to block cannot contain the
marks such as " /, \, *, ?, ", <, >, | ".
D-Link
ADVANCED SETTINGS > Content Filters > Mail Filters > SMTP
DESCRIPTION
Enable SMTP Proxy feature of DFL-1500
Ø
filename extension
When the filename extension of attachment file matches
"Filename extension", add the ".bin" extension to the
attachment file.
Ø
exact filename
When the whole filename of attachment file matches "Exact
filename", add the ".bin" extension to the attachment file.
Table 22-1 Enable SMTP feature
ADVANCED SETTINGS > Content Filters > Mail Filters > SMTP
filename
extension / exact
filename
194
Range / Format EXAMPLE
text string Enabled
Filename extension