HIKVISION DS-3WR12C, User Manual, Page: 101 / 147

WiFi Router • User Guide
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Scenario: You have set up an FTP server within your LAN.
Goal: Open the FTP server to internet users and enable family members who are not at home to
access the resources of the FTP server from the internet.
Solution: You can configure the port mapping function to reach the goal.
Assume that the information of the FTP server includes:
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IP address: 192.168.0.125
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MAC address: 00 00 00 00 00 01
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Service port: 21
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The WAN IP address of the router: X.X.X.X.

Please ensure that the router obtains an IP address from the public network. 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.

ISPs may block unreported web services to be accessed with the default port number 80.
Therefore, when the default LAN port number is 80, please change it to an uncommon port
number (1024 to 65535) manually, such as 9999.

The LAN port number and the WAN port number can be different.