Chapter 16 DDNS

Table 93 Configuration > Network > DDNS > Add (continued)

LABEL

DESCRIPTION

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.

 

 

Enable

This option is only available with a DynDNS account.

Wildcard

Enable the wildcard feature to alias subdomains to be aliased to the

 

 

same IP address as your (dynamic) domain name. This feature is useful

 

if you want to be able to use, for example, www.yourhost.dyndns.org

 

and still reach your hostname.

 

 

Mail Exchanger

This option is only available with a DynDNS account.

 

DynDNS can route e-mail for your domain name to a mail server (called

 

a mail exchanger). For example, DynDNS routes e-mail for john-

 

doe@yourhost.dyndns.org to the host record specified as the mail

 

exchanger.

 

If you are using this service, type the host record of your mail server

 

here. Otherwise leave the field blank.

 

See www.dyndns.org for more information about mail exchangers.

 

 

Backup Mail

This option is only available with a DynDNS account.

Exchanger

Select this check box if you are using DynDNS’s backup service for e-

 

 

mail. With this service, DynDNS holds onto your e-mail if your mail

 

server is not available. Once your mail server is available again, the

 

DynDNS server delivers the mail to you. See www.dyndns.org for more

 

information about this service.

 

 

OK

Click OK to save your changes back to the ZyWALL.

 

 

Cancel

Click Cancel to exit this screen without saving.

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ZyWALL USG 20/20W User’s Guide