C
C.
Dynamic Domain Name Server
This appendix explains how to use the WDR-3124A with DDNS. When the WDR-3124A receives its IP address
from a DHCP (Dynamic Host Configuration Protocol) server, remote servers will be unable to access it using a
fixed IP address. With DDNS (Dynamic Domain Name Server), a remote server can access the WDR-3124A
using its domain name instead of its IP address.
Overview
The following is a summary of the process:
1.
The WDR-3124A sends a request for an IP address to the DHCP server. At the same time, it notifies the
DHCP server of its desired server name (WDR-3124A in the illustration) according to the option 12
standard.
2.
The DHCP server replies with the IP address that is assigned to the WDR-3124A, along with the domain
name (“moxa.com” in the illustration) and the IP addresses for the DNS server and gateway.
3.
If the WDR-3124A has authorization to update the DNS server, it will register its FQDN (Fully Qualified
Domain Name) with the DNS server. The WDR-3124A’s FQDN will be in the format
[server name].[domain name] (WDR-3124A.moxa.com” in the illustration).
4.
If the WDR-3124A is not authorized to update the DNS server, the DHCP server can be used to update the
DNS server. The DHCP server will register the DNS server with the PTR RR (the record of request for a
domain name with IP address).
Summary of Contents for WDR-3124A
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