Asus ITX-220: 8 ConguringDDNS

Chapter 8

iPBX30 User Manual

8 ConguringDDNS

Dynamic DNS (DDNS) is a service that allows computers to use the

same domain name, even when the IP address changes from time

to time (during reboot or when the ISP’s DHCP server resets IP

leases). iPBX30 connects to a DDNS service provider whenever the

WAN IP address changes. It supports setting up the web services

such as Web server, FTP server using a domain name instead of

the IP address. DDNS supports the DDNS clients with the following

features:

• Update DNS records (addition) when an external interface

comes up

• Force DNS update

HTTP DDNS Client

HTTP DDNS client uses the mechanism provided by the popular

DDNS service providers for updating the DNS records dynamically.

In this case, the service provider updates DNS records in the DNS.

iPBX30 uses HTTP to trigger this update. iPBX30 supports HTTP

DDNS update with the following service provider:

• www.dyndns.org

Figure 8.1. Network Diagram for HTTP DDNS

Whenever IP address of the congured DDNS interface changes,

DDNS update is sent to the specified DDNS service provider.

iPBX30 should be configured with the DDNS username and

password that are obtained from your DDNS service provider.

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iPBX30 User Manual

Chapter 8

8.1 DDNSCongurationParameters

The table below describes the conguration parameters available

for DDNS service.

Table 8.1. DDNS Conguration Parameters

Field Description

Interface Select the interface that the DDNS service is to be used.

Status Shows the state of DDNS.

E n a b l e

Check this box to enable DDNS service; otherwise, keep the

DDNS

box unchecked.

D o m a i n

Enter the registered domain name into this eld. For example,

Name

If the host name of your

iPBX30

is “host1” and the domain

name is “yourdomain.com”, The fully qualify domain name

(FQDN) is “host1.yourdomain.com”.

Username Enter the username provided by your DDNS service provider

in this eld.

Password Enter the password provided by your DDNS service provider

in this eld.

8.2 ConguringHTTPDDNSClient

Figure 8.2. HTTP DDNS Conguration Page

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Chapter 8

iPBX30 User Manual

Follow these instructions to congure the HTTP DDNS:

1. Make sure you have registered a domain name to the DDNS

service provider, dyndns. If you have not done so, visit www.

dyndns.org for more details.

2. Click

Advanced -> DDNS Service

menu to open the DDNS

conguration page.

3. Select the interface that the DDNS service is to be used.

4. Check

Enable DDNS

checkbox to enable the DDNS service.

5. Enter the registered domain name in the

Domain Name

eld.

6. Enter the username and password provided by your DDNS

service provider.

7. Click on

Apply

button to send a DNS update request to your

DDNS service provider. Note that DNS update request will also

be sent to your DDNS service provider automatically whenever

the WAN port status is changed.

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