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Channel: Students Days (IT courses and more)

Интернет по модему в 2020 "Детство Буржуя" 10-я серия

Интернет по модему в 2020 "Детство Буржуя" 10-я серия

Channel: Уютный подвальчик

Префиксная запись маски IP адреса, Урок - приложение 3

Префиксная запись маски IP адреса, Урок - приложение 3

Channel: Students Days (курсы по IT и не только)

IP Address (API)

Интернет

Internet

Компьютер

Маршрутизатор

роутер

доступ

хост

Computer (Industry)

Local Area Network (Field Of Study)

Computer Network (Industry)

LAN

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Hello Dear viewers Today

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we will look at assigning IP addresses to

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local network nodes, as a rule, our

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local network of our small business,

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our apartment, begins with a wire

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that comes to us from the

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provider, this wire comes to us from the

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provider's switch, which is connected to the

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provider's router,

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in turn, the provider's router

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is connected either to a

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higher-ranking provider who, in fact,

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sells the Internet to our provider, in

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turn, our provider already sells

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this Internet to

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us. So the cable from the

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provider’s switch comes to our apartment or

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Small office and we connect it to our

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Internet socket of the Del Link company or the

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company’s products TP Link or

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products from Asus or products from

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any other vendor that produces

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inexpensive routers, usually

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costing about 30 dash 50

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dollars, well, an example of such solutions

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are in routers, too, DIR 300

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DIR 320

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and other technical

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solutions, such a router consists

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of the following component devices This is

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directly

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the router itself, a built-in switch and

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often a built-in

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WiFi

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access point, all this is enclosed in one

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plastic

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case through which

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we connect our computers,

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laptops, IP cameras or any other

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network

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devices through the interfaces. At the time of

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connecting to the provider’s network, the provider

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always gives us the settings of its network,

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that is, those settings that we must

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indicate on our router in order to

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connect to the network of the Internet service

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provider in the example under consideration we

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will study the case when the

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Internet service provider howled to us an

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external IP address. For example, the type

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1010 10 grease

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255

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255

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2555 as the default gateway

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the provider indicates the IP address of its

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Internet

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router

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as a DNS server if it is a large

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provider He can have his own

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dedicated server in the form of a computer on

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which a database is stored, they

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match the Internet with their domain

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names if it is a small provider

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as a DNS server he can

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use it as his own Internet

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router then about us you

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Egor

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cathode D

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server one of these DNS servers

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is the DNS server of the Google company

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whose IP address is 8 8 8 8 So this is the IP

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address that was given to us by our

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router this is the network mask of the provider

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this is the

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default gateway that was given to us by the provider

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this is the DNS server by the provider and this is some

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externally a secondary DNS server,

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in principle, this is where setting up the external

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interface of the router ends,

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that is, we indicate the data that

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the provider gave us and we can

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no longer bother setting up the

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external interface of the main The scope of work

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when setting up a local network is the

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distribution of internal IP addressing,

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here we need to do the following

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in -first, we need to assign an internal

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IP address to our

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router, which means the internal IP

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address to our router is assigned

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from the Pool of internal IP addresses which

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I talked about in one of the previous

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lessons. As an example, let us

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have an IP address of the form

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192

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168 15

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1, we are considering a classful C network

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the mask is not 255

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255

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255

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Well, in principle, again,

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setting up the internal interface of our

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router ends here. The

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next step is to

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distribute the remaining Pool of IP

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addresses between our hosts or nodes of

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our network. In this example, we have

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two computers and, accordingly, their

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network interface, we must assign

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I addresses to the rules for distributing IP

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addresses within the local network, I

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also already mentioned in one of the lessons

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the main thing is that all our hosts

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have the same network part, that is, that

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part of the IP address that is responsible for the

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network number and a different part that is

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responsible we have for the

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Host number. Well, let the first computer have an IP

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address

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of

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192

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168

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15

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10; its mask will be exactly the same as that of the

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internal information of our

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router. The next important

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parameter is setting the

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default gateway to the default gateway for our computer.

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We need it in order

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to Our computer knew where to send a

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request if an IP address was received from an external

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network, that is, all these requests go to the

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default gateway; our router is used as the default gateway,

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so we indicate

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its IP

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address. And we also need to indicate the IP

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address of our The DNS server that will be

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used in our local

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network,

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as a rule, the network interfaces

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provide for setting up two DNS

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servers, a primary and a secondary one. The

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primary DNS server is most

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often used. Again,

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our router and therefore we duplicate

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the IP address that was specified in the default gateway field

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as a secondary DNS

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server, we can use

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either the server that our provider gave us

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or some kind of

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external DNS server, for example, the same DNS

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server from

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Google, this is all the general configuration of

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the interface of our computer is completed.

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If there is another computer on our network,

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its configuration its external

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network interface looks similar, the

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same rules are followed, the only thing is

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that its Host number must differ

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from the host numbers of already existing already

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distributed IP

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addresses, that is, in this case, the IP address

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of the second computer can be 192

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168 15 11 it will have the same mask the

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default gateway will be the

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same. That is, there is a jam on the

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router as a DNS server; also,

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our router is used as a primary DN server; as a

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secondary DNS

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server, some external DNS

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server; that’s all, in general; next

00:09:00

time we Let's look in more detail at how

00:09:03

our default gateway works.

00:09:06

How we search for the desired

00:09:09

Internet network node from our computer, and

00:09:11

also consider the question of how the

00:09:13

DNS service works. You had a channel of the

00:09:16

Students Days project, sure inside, watch us

00:09:19

on YouTube and on the social network VKontakte

00:09:21

Until new ones

00:09:23

meetings

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Рассматриваются вопросы настройки компьютера и маршрутизатора для получения доступа к сети Интернет

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