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RX3141 User’s Manual Chapter 8. Configuring DDNS
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8
Configuring DDNS
Dynamic DNS 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). RX3141 connects
to a Dynamic DNS 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. Dynamic DNS
supports the DDNS clients with the following features:
f Update DNS records (addition) when an external interface comes up
f Force DNS update
Only HTTP DDNS client is supported.
HTTP Dynamic DNS 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. RX3141 uses
HTTP to trigger this update. RX3141 supports HTTP DDNS update with the following service provider:
f www.dyndns.org
Internet
ISR
HTTP DDNS Server
(DynDNS)
DynDNS
isr.homeunix.com
Figure 8.1. Network Diagram for HTTP DDNS
Whenever IP address of the configured DDNS interface changes, DDNS update is sent to the specified DDNS
service provider. RX3141 should be configured with the DDNS username and password that are obtained
from your DDNS service provider.