Experienced users of the personal computer know that at connection to network the computer receives a certain IP address (unique number) which can be dynamic or static.
For certain, many understand that communication with a wide area network obliges each computer to have own, unique number. Naturally, information from provider it has to be delivered to some specific user paying the corresponding services, but not to someone to another. For this reason, the IP address of the user is so important. The address can consist also various decimal numbers (for example, 192.168.0.1). Today there are two types of the IP addresses, it: dynamic and static IP address.
Static IP address
Until recently each net surfer possessed only the static IP address, today the situation changed in the opposite direction. Most providers offer dynamic and to install another, at first it is necessary to pay for such opportunity. The static IP address as it is not possible to guess from the name, in difference from his "colleague", can change (that is at repeated connection to network it does not change). He or is assigned the user and registers in settings of the device via which connection to a wide area network is made, or it is provided by service provider.
For what it is necessary
On the Internet there is a set of different services which just demand from the user of existence of the static IP address. For example, if the user is going to use own personal computer as the server. Why static? It is caused because all users who will be connected to your server (under a condition if it is created on the basis of the dynamic IP address) will have to receive and register it in own settings again and again, otherwise they will not be able just to be connected. Naturally, it is inconvenient not only for them, but also for the administrator, and the number of visitors of such resource will be minimized. Besides, some programs, also require existence of the static IP address thanks to what they will be able to be connected to what again and again - that to a certain server, using the same data for an input.
Thus it turns out that in case of need, the user can ask for the help the provider and learn - whether the similar service is provided. If it is possible, then for the mezzanine board the master will install to you not the dynamic IP address, but constant. The mezzanine board is added to subscriber and paid monthly. Each provider exposes the different cost of this service - it can be or very low that, naturally, is good, or fantastically high.