Step 1: Log in to the Tacitine. (If you are configuring the Tacitine for the first time, the default Lan IP is http://192.168.100.1) and default username: admin & Password: admin99

Step 2 : Click the Configuration > Firewall > MAC/IP-FilterRule > Add

Step 3: Protocol Action: Accept/Drop/Reject  depends on user request and Protocol: make it TCP/UDP and If u need Log enables

Step 4: Source Zone: For Source Address make it Specify Ip/Mac, and Exclude source address they don’t want to come to this rule

Step 5: Destination zone mention the Zone whare the server in DMZ/Wan and mention the destination address and port number
Step 6: Save > Restart Service