User manual

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20. Connect to QNAP NAS from the Internet (DDNS
Service)
Register DDNS and set port forwarding on the NAS
To connect to your NAS at home or office from the Internet, you can enter the IP address of the NAS
in a web browser providing that a fixed public IP is assigned to the NAS. However, most users may
have installed their NAS behind an NAT router and they are using a dynamic IP for Internet
connection. It is inconvenient to memorize an IP address such as 202.193.126.45 and to inform
every user of the IP address whenever a new one is assigned by the ISP. You can register a free
DDNS account and set up the information on your NAS so that the users can connect to the NAS with
an easy-to-remember host name that you specify.
DDNS u sa ge s c e na rio
1. The user connects to the NAS by the URL http://qnapqnap.dyndns.org.
2. The NAS detects the WAN IP has changed and the DDNS client sends the WAN IP to the DDNS
service provider.
3. The DDNS service provider receives the information and assigns the new IP to the DDNS host
name (qnapqnap.dyndns.org).