INTERNET

 IP address- What is a dynamic IP address and what is a static IP address?

In everyday life, if we want to find someone, or visit for the first time, we have to use their address. So every natural or legal person on our planet has his own address through which we can organize communication with him, whether physical, verbal, or postal.

There are other systems that use some kind of address:

Telephony - uses phone numbers

GPS- uses geosatellite coordinates for positioning

Now that the Internet has become a modern, organized, widely applicable network in modern communication (whether of a personal or business nature), have you ever thought about how we actually find the most diverse content through a computer (browser), located on servers around the world, or how we connect to a remote computer on the other side of the planet, exchange messages or communicate by voice.

The simplest answer is - using the address. So every computer connected to the Internet at that moment has a unique address (unique, because no two computers can have the same address at the same moment, because that disturbs the protocol).

Yes, logically, in order for everything to function smoothly, there must be a protocol that defines the interconnection of computers, and that is IP - Internet Protocol, so the address is called an IP address.

Ordinary users in 90% of cases are not even aware of how many processes (which are part of the internet protocol) take place in the background in order for them to find what they are interested in through their search engine. We will not analyze those processes in detail here, but will focus on the IP address.

An IP address is a 32-bit number (=4 bytes) that is an identification number for each client or each server on the Internet.

This definition is based on the current version 4 of the Internet Protocol (IPv4).

Every packet of data sent over the Internet includes the IP addresses of the sender and recipient, in order to route the packet properly. IP v4 addresses are divided into 4 parts, each part is a number ranging from 0 to 255, separated by dots, for example: 192.168.0.1

The IP address can be local, created for our local network -LAN, and public. The public address of our computer is the address seen by the global Internet network, as an address associated only with us and it is assigned to us by our ISP - Internet Service Provider.

Thus, the address of our computer on the Internet can have a dynamic IP address or a static IP address.

What's the difference?

As the name suggests, a dynamic IP address is variable, which means that whenever we reset our router's connection to the Internet, our IP address takes on a different value. It is common for an Internet service provider to assign a dynamic IP address, unless otherwise requested. This is not a problem in terms of our normal connection and surfing, but if we want constant access to some of our Internet resources (website, server, video surveillance over the Internet), a better solution is to have a static IP address, that is, an unchanging IP address.

A static IP address is provided by our Internet Provider, and providers charge for this service :( .

However, once it is assigned to us, it always remains our location on the Internet, and to all devices that are part of our local (home or corporate) network. we can access through that public address, with the addition of the appropriate port that is open for our access (port forwarding).

Therefore, it is precisely this that allows us to access video surveillance cameras, from any location in the world, via the Internet, whether they are IP cameras or cameras connected to a DVR.

If we are interested in what our current and public IP address is (either static or dynamic), there are sites that will show us this:

http://www.whatismyip.com/

Speaking of that problem, and we need a static IP address, there are sites (services) that can provide us with dynamic DNS as if we had a static IP address and for free under appropriate conditions, or a static address with many additional resources, which of course are paid for.

One of them is: http://www.noip.com/

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