D-Link DFL-CPG310 Product Manual - Page 284
VStream Antivirus Rule Types
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Configuring VStream Antivirus For example, if you want to scan all outgoing SMTP traffic, except traffic from a specific IP address, you can create a rule scanning all outgoing SMTP traffic and move the rule down in the Antivirus Policy table. Then create a rule passing SMTP traffic from the desired IP address and move this rule to a higher location in the Antivirus Policy table than the first rule. In the figure below, the general rule is rule number 2, and the exception is rule number 1. The NetDefend firewall will process rule 1 first, passing outgoing SMTP traffic from the specified IP address, and only then it will process rule 2, scanning all outgoing SMTP traffic. The following rule types exist: VStream Antivirus Rule Types Table 59: VStream Antivirus Rule Types Rule Pass Description This rule type enables you to specify that VStream Antivirus should not scan traffic matching the rule. 268 D-Link NetDefend firewall User Guide
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