D-Link DVA-G3670B User Manual page 58

Section 3 - Configuration
ADD INBOUND IP FILTER
Click Add button to set Port Forwarding Setup setting
Enter the Filter name and at least one of the following criteria:
Protocol, Source/Destination IP Address and Subnet Mask, and
Source/Destination Port.
Click on the Add/Apply button to add and apply settings.
Note: This section only applies when the Firewall is enabled.
D-Link DVA-G3670B User Manual 58