Users Manual Part 2

Chapter 32 Troubleshooting
NBG7510 User’s Guide
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1 Make sure you have entered the user name and password correctly. The default user name is admin.
These both user name and password are case-sensitive, so make sure [Caps Lock] is not on.
2 You cannot log in to the Web Configurator while someone is using Telnet to access the Zyxel Device.
Log out of the Zyxel Device in the other session, or ask the person who is logged in to log out.
3 Turn the Zyxel Device off and on.
4 If this does not work, you have to reset the Zyxel Device to its factory default.
I cannot log into the Zyxel Device using DDNS.
If you connect your Zyxel Device to the Internet and it uses a dynamic WAN IP address, it is inconvenient
for you to manage the device from the Internet. The Zyxel Device’s WAN IP address changes
dynamically. Dynamic DNS (DDNS) allows you to access the Zyxel Device using a domain name.
To use this feature, you have to apply for DDNS service at www.dyndns.org.
Note: If you have a private WAN IP address, then you cannot use DDNS.
Here are the three steps to use a domain name to log in the Web Configurator:
Step 1 Register for a DDNS Account on www.dyndns.org
1 Open a browser and type http://www.dyndns.org.
2 Apply for a user account. This tutorial uses UserName1 and 12345 as the username and password.
3 Log into www.dyndns.org using your account.
4 Add a new DDNS host name. This tutorial uses the following settings as an example.
• Hostname: zyxelrouter.dyndns.org
• Service Type: Host with IP address
• IP Address: Enter the WAN IP address that your Zyxel Device is currently using. You can find the IP
address on the Zyxel Device’s Web Configurator Status page.
Then you will need to configure the same account and host name on the Zyxel Device later.
Step 2 Configure DDNS on Your Zyxel Device