Services
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Solution: You can configure the DMZ host function to reach the goal.
Assume that the information of the FTP server includes:
− IP address: 192.168.1.136
− MAC address: D4:61:DA:1B:CD:89
− Service port: 21
− WAN IP address of the router: 102.33.66.88
Please ensure that the router obtains a public IP address public. This function may not work on a host
with an IP address of a private network or an intranet IP address assigned by ISPs that start with 100.
Common IPv4 addresses are classified into class A, class B and class C. Private IP addresses of class A
range from 10.0.0.0 to 10.255.255.255. Private IP addresses of class B range from 172.16.0.0 to
172.31.255.255. Private IP addresses of class C range from 192.168.0.0 to 192.168.255.255.
Configuring procedure:
Step 1 Log in to the web UI of the ONT.
Step 2 Set the server host as the DMZ host.
1. Choose Services > Firewall > DMZ.
2. Select Enable for DMZ Host.
3. Enter the IP address of the server host, which is 192.168.1.136 in this example.
4. Click Apply Changes.
Step 3 Assign a fixed IP address to the host where the server locates.
1. Choose Services > Service > DHCP.