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11.5.2 Enable internet users to access LAN resources using a
domain name
Scenario: You have set up an FTP server within your LAN.
Requirement: 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 using a domain name.
Solution: You can configure the DDNS plus virtual server functions to reach the requirements.
Assume that the information of the FTP server includes:
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IP address: 192.168.0.136
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MAC address of the host: D4:61:DA:1B:CD:89
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Service port: 21
The information of the registered DDNS service:
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Service provider: oray.com
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User name: JohnDoe
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Password: JohnDoe123
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Domain name: o2849z7222.zicp.vip
Please ensure that 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 172.16.0.0-172.31.255.255.
Private IP addresses of class C range from 192.168.0.0-192.168.255.255.
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Document Version: V1.0