Dericam H502W, Руководство пользователя

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Shenzhen Dericam Technology Co., Ltd H502W User Manual
www.dericam.com
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13.
How to Access IP camera via WAN (Wide Area Network)
13.1 What’s DDNS?
Dynamic DNS, also called as dynamic domain name, is used to handle the problem that
user’s device doesn’t have fixed IP while accessing Internet. With assist of DDNS, user can
connect to his/her IP camera directly via DDNS.
If user wants to access his/her IP camera via WAN, two conditions, mentioned as follows,
and must be met.
1. User knows the WAN IP address or domain name of the IP camera.
2. If IP camera connects to a router, the corresponding mirror port of router must be set for
IP camera, so that user can access the IP Cam located in LAN through WAN.
Most users don’t have fixed IPs. Every time when the device connects with Internet, net-
working service operator allocates a dynamic IP to the device. If the connection breaks and
rebuilds, a new IP will be allocated again. Normally, user doesn’t know the IP of device.
DDNS feature can overcome this problem. As long as user knows the dynamic domain
name, he/she is always able to access his/her networking device.
13.2 How to get the DDNS account:
For user’s convenience, IP camera binding one free DDNS account. Each IP camera has a
unique global domain name, which is marked on device body. Also, user can obtain the
domain name via IP Cam tools. Please refer the figure attached below.
If user wants to visit domain, he/she just needs to do port mapping on router (How to do will
be explained in the following pages). Then, user can direct access to the domain name, such
as, http://12139.eipcam.com:81/. (Note: the port 80 is the port number of local IP).