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Chapter 12 DDNS

ZyWALL 110/310/1100 Series User’s Guide

218

Username

Type the user name used when you registered your domain name. You can use up to
31 alphanumeric characters and the underscore. Spaces are not allowed.

For a Dynu DDNS entry, this user name is the one you use for logging into the service,
not the name recorded in your personal information in the Dynu website.

Password

Type the password provided by the DDNS provider. You can use up to 64 alphanumeric
characters and the underscore. Spaces are not allowed.

Retype to Confirm

Type the password again to confirm it.

DDNS Settings

Domain name

Type the domain name you registered. You can use up to 255 characters.

Primary Binding
Address

Use these fields to set how the ZyWALL determines the IP address that is mapped to
your domain name in the DDNS server. The ZyWALL uses the Backup Binding
Address if the interface specified by these settings is not available.

Interface

Select the interface to use for updating the IP address mapped to the domain name.
Select Any to let the domain name be used with any interface.

IP Address

The options available in this field vary by DDNS provider.

Interface -The ZyWALL uses the IP address of the specified interface. This option
appears when you select a specific interface in the Primary Binding Address
Interface field.

Auto - If the interface has a dynamic IP address, the DDNS server checks the source
IP address of the packets from the ZyWALL for the IP address to use for the domain
name. You may want to use this if there are one or more NAT routers between the
ZyWALL and the DDNS server.

Note: The ZyWALL may not determine the proper IP address if there is an HTTP proxy

server between the ZyWALL and the DDNS server.

Custom - If you have a static IP address, you can select this to use it for the domain
name. The ZyWALL still sends the static IP address to the DDNS server.

Custom IP

This field is only available when the IP Address is Custom. Type the IP address to use
for the domain name.

Backup Binding
Address

Use these fields to set an alternate interface to map the domain name to when the
interface specified by the Primary Binding Interface settings is not available.

Interface

Select the interface to use for updating the IP address mapped to the domain name.
Select Any to let the domain name be used with any interface. Select None to not use
a backup address.

IP Address

The options available in this field vary by DDNS provider.

Interface -The ZyWALL uses the IP address of the specified interface. This option
appears when you select a specific interface in the Backup Binding Address
Interface field.

Auto -The DDNS server checks the source IP address of the packets from the ZyWALL
for the IP address to use for the domain name. You may want to use this if there are
one or more NAT routers between the ZyWALL and the DDNS server.

Note: The ZyWALL may not determine the proper IP address if there is an HTTP proxy

server between the ZyWALL and the DDNS server.

Custom - If you have a static IP address, you can select this to use it for the domain
name. The ZyWALL still sends the static IP address to the DDNS server.

Custom IP

This field is only available when the IP Address is Custom. Type the IP address to use
for the domain name.

Table 82

Configuration > Network > DDNS > Add (continued)

LABEL

DESCRIPTION