This article teaches you how to create and configure a D-Link firewall ,DFL-800,DFL-1600.on
Step 1: Open the web browser and type the IP address of the D-Link router into address bar (default is 192.168.1.1). Press Enter.
Step 2: Click on the plus sign next to Objects and then select Sevices.
Step 3: Click on Add, and then select the type of service (TCP/UDP Service, ICMP Service, IP Protocol Service, Service Group) from the dropdown menu.
Step 4: Configure theas followed:
Name: enter a name as desired.
Type: select an appropriate type for this service (TCP, UDP, TCP/UDP).
Source: leave as is (By default 0-65535).
Destination: enter a port for this custom service.
Click on OK.
Step 5: Click the Configuration tab and select Save and Activate from the dropdown menu. Click on OK to save and activate the settings.