D-Link Express Ethernetwork DI-604 Owner's Manual page 23

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Destination port address
For source or destination IP address, you can define a single IP address
(e.g., 4.3.2.1) or a range of IP addresses (e.g., 4.3.2.1-4.3.2.254). An empty
fields implies all IP addresses.
For source or destination port, you can define a single port (e.g., 80) or a
range of ports (e.g., 1000-1999).
Each rule can be enabled or disabled individually.
Inbound Filter:
To enable the Inbound Packet Filter, click the check box next to Enable in
the Inbound Packet Filter field.
Outbound Firewall: (to access the Outbound Filter, click Outbound
Firewall at the bottom of the window.)
To enable the Outbound Packet Filter click the check box next to Enable in
the Outbound Packet Filter field.
Follow the same procedure as for the Inbound Firewall. The IP addresses
that you input will be blocked from the port activity that you input (e.g.,
browsing the internet, receiving mail etc.)
After Outbound Packet Filter setting is configured, click the Apply button.