D-Link SECURICAM NETWORK DCS-5300 - Manual (Page 43)

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Using the DCS-5300 with an Internet browser
(continued)
Click the DDNS & UPnP button from the Configuration screen to access
DDNS & UPnP settings.
Configuration > Advanced > DDNS & UPnP
Dynamic DNS (DDNS)
Dynamic DNS (Domain Name Service) is a method of keeping a domain name
linked to a changing (dynamic) IP address. With most Cable and DSL
connections, you are assigned a dynamic IP address and that address is used
only for the duration of that specific connection. With the DCS-5300, you can
setup your DDNS service and the DCS-5300 will automatically update your
DDNS server every time it receives a different IP address. Depending on the
service, this update may take a few hours.
Click DNS & UPnP