D-Link DFL-1660 User Manual page 283

6.5.8. SMTP Log Receiver for IDP
Events
An IDP rule called IDPMailSrvRule will be created, and the Service to use is the SMTP service. Source Interface
and Source Network defines where traffic is coming from, in this example the external network. The Destination
Interface and Destination Network define where traffic is directed to, in this case the mail server. Destination
Network should therefore be set to the object defining the mail server.
CLI
Create an IDP Rule:
gw-world:/> add IDPRule Service=smtp SourceInterface=wan SourceNetwork=wannet
Specify the Rule Action:
gw-world:/> cc IDPRule IDPMailSrvRule
gw-world:/IDPMailSrvRule> add IDPRuleAction Action=Protect
Web Interface
Create an IDP Rule:
This IDP rule is called IDPMailSrvRule, and applies to the SMTP service. Source Interface and Source Network
define where traffic is coming from, in this example, the external network. The Destination Interface and
Destination Network define where traffic is directed to, in this case the mail server. Destination Network should
therefore be set to the object defining the mail server.
1. Go to IDP > IDP Rules > Add > IDP Rule
2. Now enter:
• Name: IDPMailSrvRule
• Service: smtp
• Also inspect dropped packets: In case all traffic matching this rule should be scanned (this also means
traffic that the main rule set would drop), the "Protect against insertion/evasion attacks" checkbox should
be checked, which is the case in this example.
• Source Interface: wan
• Source Network: wannet
• Destination Interface: dmz
• Destination Network: ip_mailserver
• Click OK
DestinationInterface=dmz DestinationNetwork=ip_mailserver
Name=IDPMailSrvRule
IDPServity=All Signatures=IPS_MAIL_SMTP
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Chapter 6. Security Mechanisms