9
The access from internet
Sometimes you might need to visit your IP camera from internet. Such as you
want to see your pets when you at office. You can control the home camera send
the pets
’
video to you by using internet. You have to do some configurations of
your router before you visit your camera from internet.
You cam image there are many cameras and computers are connecting the
same inside network port of router. The router can get a public network IP
address (such as 202.102.3.11) to connect the internet, however it assign
inside network port address for each device as LAN IP address, such as
192.168.0.xxx.
You can choose follow methods to modify router configuration. After that the
remote user can visit your IP camera.
You can achieve this goal by enable Reversal NAT (RNAT) function of IP Sharing
Device.
1.
“
Virtual Server
”
: Many routers have
“
Virtual Server
”
support. You must
forward the WAN 80 TCP port to LAN IP Camera
’
s IP and Port. (If you visit
210.82.13.21
’
s 80 port outside, you will be forward to LAN 192.168.0.2
’
s 80
port).
2.
Another method is the
“
DMZ Host
”
. If enabled to use a LAN device as the
DMZ host, the outside PC will be able visit this LAN device directly, as if there
is no IP Sharing Device exists. This method support only one LAN device
exposed to the WAN. Thus, if you have more IP Cameras, you have to use
the above method.
The Dynamic Domain Name access
The dynamic domain name (DDN) access is using DDN system to mapping a
user
’
s dynamic IP address to a settled dynamic domain name service. It makes
up of Server program and Customer program. The Customer program sends the
dynamic IP address of host computer to Server program, and then the Server
program update the data now. Also the Server program can provide a settled
domain name for customer. The new IP address will be tied with the settled
domain name together by Server program. At this time the dynamic domain
name service (DDNS) is done, and your server can be visited by others.
The function of DDNS is achieving the resolution between dynamic IP address
and settled domain name. After getting the new IP address, user has to apply
update data from DNS every time. When the user is online, someone wants to
