The access from internet
Sometimes you might need to visit your IP camera from internet. Such as you ant to see
your pets hen 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
net ork port of router. The router can get a public net ork IP address (such as
202.102.3.11) to connect the internet, ho ever it assign inside net ork port address for
each device as LAN IP address, such as 192.168.0.xxx.
You can choose follo 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 for ard 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 ill be for ard 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 ill 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 no . Also
the Server program can provide a settled domain name for customer. The ne IP address
ill be tied ith 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 bet een dynamic IP address and settled
domain name. After getting the ne IP address, user has to apply update data from DNS
every time. When the user is online, someone ants to visit this domain name from
internet, the DDN server ill return to the correct IP address. To prevent a confusion
caused by reusing the same IP address, the DNS have to stop use the domain name
hen the user is offline.