Operating Instructions
75

2.8.1 DynamicDNS Service (IPv4/IPv6)

DynamicDNS allows you to choose an easy-to-remember address (such as
"bob.viewnetcam.com") that can be used to view images from your camera over
the Internet. This service is compatible with both IPv4 and IPv6 addresses. Some
DynamicDNS service is not compatible with IPv6 address.
What are the advantages of DynamicDNS service?
In order to view camera images over the Internet, you need to know your camera's
global IP address. However, many Internet Service Providers (ISPs) assign their
customers a "dynamic" IP address that changes monthly, weekly, or each time they
log on. Unless you have been assigned a static IP address (an IP address that
does not change periodically) by your ISP, you may find it difficult to access your
camera over the Internet. The Viewnetcam.com service allows you to access your
camera even if your assigned global IP address changes.
How the DynamicDNS service works
1. Your ISP assigns a global IP address to your Internet access account that
changes periodically. This is the address needed to access the camera over
the Internet.
2. When your ISP-assigned global IP address changes, your camera
automatically notifies the DynamicDNS service server of the new address in
the DynamicDNS. The camera notifies the DynamicDNS service server of the
new address in DynamicDNS in the following cases.
• When starting the camera
• When an update interval time has been set.
• When clicking the [Save] button
3. The DynamicDNS server contacts the Domain Name System (DNS) server
and registers your new global IP address to your chosen DynamicDNS
address (such as "bob.viewnetcam.com").
DynamicDNS service server
ISP
DNS
server
Internet
New address registered with
DNS server Camera reports new address
Camera connection established
Global IP address
changes
Off-site PC
On-site Network
Camera
DNS looks up
current address
3.
4.
2.
1.
5.