User`s guide

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Configuration – Network > Dynamic DNS
The Dynamic DNS client (DynDNS) is used to update DNS hostnames with the current IP
address of a particular interface. It operates in accordance with the specification supplied by
dyndns.com (go to http://www.dyndns.com/developers/specs/). When the interface
specified by the interface and interface instance number parameters connects, the client
checks the current IP address of that interface and if it differs from that obtained from the
previous connection,
www.dyndns.com is contacted and the hostnames specified in the
Hostname parameters are updated with the new address.
Host and Domain Name(s)
These five text boxes specify up to five host/domain names that are to be updated using the
service.
Destination port #
The value in this text box specifies the IP port to use as the destination port. The default
value is 0 which causes the router to use the default port number which is port 80.
DynDNS User Name
The value in this text box specifies the username to use when updating the hostnames. This
will have been supplied by the service provider.
DynDNS Password
The value in this text box specifies the password to use when updating the hostnames. This
will have been supplied by the service provider.
Confirm DynDNS Password
Enter the password into this text box to confirm it.
DynDNS DDNS System
The value selected from this drop-down list is used to identify the dynamic DNS system
containing the hostnames to be updated. The available options are; “Dynamic DNS”, “Static
DNS” and “Custom DNS”.
When default route/interface x,y becomes active, send DDNS update
The radio buttons select whether or not the router should use the default interface or the
interface specified from the drop-down list. If the specified interface option is selected, the
required interface is selected from the drop-down list and the interface instance is entered
into the adjacent text box. If the default interface is selected, the client will keep track of
and use the current default route.
Use Wildcards
This drop-down list selects whether or not wildcard matching on the hostname will be
performed. The options are; Disable wildcards, Enable wildcards, No change to service
settings. When enabled, the Dynamic DNS service will match DNS requests of the form
“*.hostname” where “*” matches any text. For example, if Hostname1 was set to
“site.dyndns.com” and wildcard matching was enabled, than
www.site.dyndns.com would
resolve to the interface address.