Table of Contents
Advertisement
M2M Cellular Gateway
3.d Client & Server & Proxy
This section presents application clients, servers or proxies running in the gateway system. There
are mainly Dynamic DNS client and DHCP server in the current gateway device.
3.d.1 DNS & DDNS
How does user access your server if your WAN IP address changes all the time? One way is to
register a new domain name, and maintain your own DNS server. Another simpler way is to apply a
domain name to a third‐party DDNS service provider. The service can be free or charged. If you want to
understand the basic concepts of DNS and Dynamic DNS, you can refer to Wikipedia website
To host your server on a changing IP address, you have to use dynamic domain name service
(DDNS). Therefore, anyone wishing to reach your host only needs to know the domain name. Dynamic
DNS will map the name of your host to your current IP address, which changes each time you connect
your Internet service provider.
In short, the Dynamic DNS service allows the gateway to alias a public dynamic IP address to a
static domain name, allowing the gateway to be more easily accessed from various locations on the
Internet. The user has to register a domain name to a third‐party DDNS service provider to use DDNS
function.
In the "Dynamic DNS" page, there is only one configuration window to set up the necessary
parameters for Dynamic DNS function.
Dynamic DNS
The required parameters for the dynamic DNS agent in the gateway system include the DDNS
10 http://en.wikipedia.org/wiki/Domain_Name_System
11 http://en.wikipedia.org/wiki/Dynamic_DNS
Index skipping is used to reserve slots for new function insertion, when required.
10,11
.
159
Advertisement
Table of Contents
