Connect to QNAP NAS from the Internet (DDNS Service)

Set up DDNS Service for Remote Internet Access to QNAP NAS

Dynamic Domain Name Service (DDNS) is a service used to map a domain name to the dynamic IP address of a network device. QNAP NAS supports DDNS for quick system access on the Internet by an easy-to-remember domain name (URL) instead of a lengthy IP address. Once the IP is changed, the NAS will automatically update the information to the DDNS provide to ensure it is always available for remote access.

1A: Register a domain name, e.g., from a DDNS provider.

1B: Enable DDNS service and fill in the DDNS account information on the NAS.

1C: QNAP NAS will update the WAN IP information to the DDNS provider automatically.

2A: Remotely connect to the NAS by the domain name you registered: from any PC.

2B: The DDNS provider will map the WAN IP updated by QNAP NAS to the domain name should the IP change.

Register DDNS service

If the NAS is set up to use a dynamic IP address, you may register a free DDNS (dynamic DNS) account from a DNS service provider and assign a unique host name for easy access to the NAS on the Internet. To register a DDNS account, please refer to the steps below:

1. Choose a DNS service provider. QNAP NAS currently supports the following DDNS service providers:

2. Create an account. Here we take as an example. Visit Click “Sign In” and “Create an Account” to register a DynDNS account.

3. Complete the form to create a free account.

4. A confirmation email will be sent to the email address.

5. Click the link in the email for confirmation.

6. Click “Confirm Account” and login DynDNS.

7. Register a host name for the NAS. A host name is a unique name that identifies the NAS. Pick something you will remember. For example, fill in “QNAP” and select “”. Then click “Add”.
8. Activate the host name.

You can now login the NAS and set up the DDNS service.

Configure DDNS service on QNAP NAS

Login your NAS and go to “System Administration” > “Network” > “DDNS”. Enter the DDNS information you registered from the DNS service provider. You may also schedule the NAS to update the DDNS record periodically by configuring the “Check the External IP Address Automatically” option.

After finishing the settings, the NAS will start to update the WAN IP to the DDNS provider for domain name mapping. You can now connect to the NAS by the domain name ( on the Internet.

Look up for your DNS if you need to verify:

To check that the domain name of the NAS is correctly mapped to its WAN IP, you may visit Enter your domain name for DNS lookup and it will return your IP address.

Port Forwarding

If your NAS is located behind an NAT router, you need to open the ports of some services on the NAT router and forward these ports to the fixed LAN IP of the NAS so that you can connect to the services correctly from the Internet. This function is available on most routers in the market and is often known as “Port Forwarding”, “NAT Server”, or “Virtual Server”. For example, to connect to the administration interface of NAS series, you need to open port 8080.

Current open service ports on QNAP NAS
NAS Services Default Port
Web-based system management 8080 (All models, TS-101/201 with firmware v2.3.0 or later)
Web-based system management 6000 (TS-100/101/201 firmware prior to v2.1.1)
FTP 21
Passive FTP 55536–56559
Web Server 80
Download Station (BT download) 6881–6999
Remote replication (Rsync) 873
Telnet 13131
SSH 22
SSL 443
Samba 445
MySQL 3306
TwonkyMedia 9000

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