Planet Technology ICA-350 3.5.2 DDNS server, Note:, Gateway, HTTP Port, HTTP Port, Primary DNS, Secondary DNS

	11111111 00000000 will usually be shown in the corresponding, more
	readable form as 255.255.255.0.
Gateway	A gateway is a piece of software or hardware that passes information
	between networks. You'll see this term most often when you either log in to
	an Internet site or when you're transient email between different servers.
Primary DNS	When you send email or position a browser to an Internet domain such as
	xxxxx.com, the domain name system translates the names into IP
	addresses. The term refers to two things: the conventions for naming hosts
	and the way the names are control across the Internet.
Secondary DNS	The same function as DNS1. It is option not necessary

Note: need to reboot the device to take this setting effect.

HTTP Port	The device supports two HTTP ports. The first one is default port 80 and
	this port is fixed. This port is very useful for Intranet usage. The second
	HTTP port is changeable. Users could assign the second port number of
	http protocol, and the WAN users should follow the port number to login. If
	the http port is not assigned as 80, users have to add the port number in
	back of IP address. For example: http://192.168.0.20:80.
	If multiple devices are installed on the LAN and also required to be
	accessed from the WAN, then the HTTP Port can be assigned as the virtual
	server port mapping to support multiple devices.

When the configuration is finish, please click “OK” to save and enable the setting.

3.5.2 DDNS server

DDNS: Stands for Dynamic Domain Name Server

The device supports DDNS. If your device is connected to xDSL directly, you might need this feature. However, if your device is behind a NAT router, you will not need to enable this feature. Because DDNS allows the device to use an easier way to remember naming format rather than an IP address. The name of the domain is like the name of a person, and the IP address is like his phone number. On the Internet we have IP numbers for each host (computer, server, router, and so on), and we replace these IP numbers to easy remember names, which are organized into the domain name. As to xDSL environment, most of the users will use dynamic IP addresses. If users want to set up a web or a FTP server, then the Dynamic Domain Name Server is necessary. For more DDNS configuration, please consult your dealer.

Your Internet Service Provider (ISP) provides you at least one IP address which you use to connect to the Internet. The address you get may be static, meaning it never changes, or dynamic, meaning it’s likely to change periodically. Just how often it changes, depends on your ISP. A dynamic IP address complicates remote access since you may not know what your current WAN IP address is when you want to access your network over the Internet. The solution to the dynamic

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