WEBVTT 00:09.230 --> 00:10.580 Friends will come back. 00:10.580 --> 00:17.360 Welcome to another important section of discourse series in this section to talk about Nick good management 00:17.420 --> 00:18.210 in Linux. 00:18.230 --> 00:18.710 OK. 00:18.880 --> 00:19.150 OK. 00:19.160 --> 00:25.370 But for now in this lesson we're going to talk about how to configure the network interface. 00:25.370 --> 00:25.620 OK. 00:25.640 --> 00:30.760 We're going to talk about the network interface to a different IP address classes. 00:30.800 --> 00:32.430 All these basic things. 00:32.660 --> 00:34.150 So what is a netbook. 00:34.190 --> 00:34.740 OK. 00:34.940 --> 00:42.590 Then two or more computers are connected to each other to share in information so this is called as 00:42.590 --> 00:48.830 the network or given me connect two or more computers that each other to share information that is in 00:48.830 --> 00:50.230 a file folder. 00:50.270 --> 00:50.820 OK. 00:51.050 --> 00:52.500 That is called as a network. 00:52.520 --> 00:58.280 So there are different types of network that is lan than man. 00:58.410 --> 00:58.830 OK. 00:58.970 --> 01:06.710 So when we connect two or three four computers or any devices that is mobile device or any laptop with 01:06.710 --> 01:09.740 the network it's called as LAN. 01:09.740 --> 01:18.920 When two or more lines are connected to each other to share the information then this group or network 01:18.920 --> 01:24.050 is called lets van and insert different vans are connected to each other. 01:24.140 --> 01:32.220 It is called as man man stands for metropolitan area network LAN stands for local area network Canavan 01:32.260 --> 01:34.420 stands for Weidner. 01:34.520 --> 01:42.260 OK so in this very different computers are connected with each other with different types. 01:42.380 --> 01:48.030 OK so in the whole field all the computers are connected to each other. 01:48.050 --> 01:55.140 Why are such network to share information so such group of network is called as the Internet. 01:55.340 --> 02:01.940 Computers are identified on the internet with the help of an IP address given that the computers are 02:01.970 --> 02:05.050 on local network or they are on the Internet. 02:05.090 --> 02:07.930 They are identified with the help of an IP address. 02:07.940 --> 02:10.740 They are not identified based on their names. 02:10.820 --> 02:14.020 So IP addresses are used quite undefined. 02:14.020 --> 02:18.010 Computers are a device in the network. 02:18.200 --> 02:21.710 So here we're going to talk about the IP addresses. 02:21.740 --> 02:24.290 There are two types of veggies. 02:24.310 --> 02:24.830 OK. 02:25.010 --> 02:29.650 Number one is public IP address and number two is private IP address. 02:29.870 --> 02:36.960 So public IP addresses or do they pay addresses which are actually available on the internet means of 02:36.980 --> 02:42.170 any type of anymore by law or any computer you connected to the Internet. 02:42.200 --> 02:49.130 Then there is an public IP address with the help of which you are sharing the information or accessing 02:49.130 --> 02:51.080 an information with the world. 02:51.270 --> 02:51.730 OK. 02:51.930 --> 02:57.930 And it has happened to public IP address and private IP addresses local IP addresses. 02:57.950 --> 03:04.730 When you when you get an IP address or in connection from your internet service provider and you connect 03:05.180 --> 03:08.530 different devices different devices. 03:08.540 --> 03:14.900 Suppose you get an Internet connection from my internet service provider and you can take that connection 03:14.970 --> 03:22.200 to and routers so on the mobile devices that you are connecting to the router are assigned an private 03:22.340 --> 03:23.470 IP address. 03:24.080 --> 03:28.700 Those IP addresses are not accessible to the outside world. 03:28.790 --> 03:30.910 They are local to your network. 03:30.910 --> 03:31.280 OK. 03:31.430 --> 03:36.900 So thats how private IP addresses works and there are two types also. 03:37.040 --> 03:45.260 That is or you can call it as an protocol that is IPV for an IP This is so IPV for stands for Internet 03:45.260 --> 03:51.420 Protocol version for ok due to lack of IP addresses IP V-6 is interesting. 03:51.420 --> 03:54.760 OK so in this lesson we're going to talk about IPV for. 03:55.070 --> 04:00.260 So there are five classes of IPV for public IP addresses. 04:00.290 --> 04:03.560 OK here I'm going to show you all the IP address classes here. 04:03.800 --> 04:06.260 So the number one is class. 04:06.560 --> 04:16.960 So this class of course can range from one dot 0.0 got 1 1 2 6 4 2 5 5 5 2 5 4. 04:17.090 --> 04:17.690 OK. 04:17.750 --> 04:25.350 So this is how an IP address looks OK with these kinds of IP addresses you can connect to the world. 04:25.640 --> 04:36.620 And with glass you can support this range and it supports up to 16 million host on 127 networks. 04:36.650 --> 04:37.120 OK. 04:37.220 --> 04:40.180 So here you can see the number in the bracket. 04:40.280 --> 04:42.780 It supports that number of host. 04:42.830 --> 04:43.320 OK. 04:43.490 --> 04:45.700 On one the networks. 04:45.860 --> 04:49.700 So this is how the class in IP address works. 04:49.750 --> 04:50.270 OK. 04:50.480 --> 04:54.450 So there are different concepts of IP addressing networking. 04:54.530 --> 04:57.360 Those concepts are belonging to any classes. 04:57.360 --> 04:59.290 Again it is not an CCMA class. 04:59.480 --> 05:07.220 So I'm trying to teach you everything possible in a brief about all the networking concepts OK that 05:07.610 --> 05:11.130 will help you understand this section Okay. 05:11.390 --> 05:14.420 So here let's talk about the next class. 05:14.510 --> 05:18.230 Let this class be so Class B it support center. 05:18.290 --> 05:26.770 Range from one to got 1.0 not one up to 1 9 1 2 5 2 5 5 4. 05:27.020 --> 05:37.510 And this class supports up to 65000 Hurlstone 16000 net locks 16000 different networks. 05:37.520 --> 05:44.270 Now let's talk over the next class that is GLASSIE the class supports an IP range from 1 9 2.0. 05:44.270 --> 05:50.670 Not one not one you'll get to 3.5 are not too far forward of before. 05:50.790 --> 05:51.380 OK. 05:51.500 --> 05:57.180 And it's a pool subgroup good 2:54 who is up to two million networks. 05:57.220 --> 05:57.630 OK. 05:57.710 --> 06:01.480 In this way these three classes works. 06:01.520 --> 06:04.360 Let's talk about the next class that is Class D. 06:04.640 --> 06:13.260 This class supports an IP range from 2.2 4.00 or 0 2 2 3 9 2 5 5 5 5. 06:13.330 --> 06:13.810 OK. 06:13.940 --> 06:19.340 Separated by dots and these IP addresses are reserved for multicasting purposes. 06:19.490 --> 06:23.850 These IP addresses can not be used for home users. 06:23.900 --> 06:24.530 OK. 06:24.860 --> 06:37.410 Now glass in this glass of water an IP range from 2 4 0 0 0 0 0 to $54 255 or 255 254. 06:37.670 --> 06:44.510 And these IP addresses are reserved for future or experimental deals and these also cannot be used for 06:44.630 --> 06:47.800 home purposes or any kind of business purpose. 06:47.910 --> 06:48.380 OK. 06:48.500 --> 06:55.060 So in this way this public IP address is what the difference is that the number of force they support. 06:55.250 --> 06:55.990 OK. 06:56.420 --> 06:59.630 After discussing the public IP addresses. 06:59.630 --> 07:03.680 Now it's time to discuss something about private IP addresses. 07:03.830 --> 07:07.450 So these IP addresses are swiping three classes. 07:07.460 --> 07:16.850 That is classic private IP address GLASSIE supports this range that is then not zero got 0.0 and Dot 07:16.900 --> 07:20.130 255 are 255 not 255. 07:20.300 --> 07:20.810 OK. 07:21.060 --> 07:23.110 And the next class is Clasby. 07:23.120 --> 07:32.590 It supports a range from 1 7 2 door to 1 6 0 0 to 1 turn to dot 3 1 dot 255 not 255. 07:32.740 --> 07:45.760 And the next class C this class supports the IP range from 1 9 2 1 6 8 0 8 0 2 1 9 2 1 6 8 dot 255 255. 07:46.080 --> 07:46.550 OK. 07:46.760 --> 07:52.700 These IP addresses are assigned to the local devices by the Nikolic administrators. 07:52.910 --> 07:59.950 That means by you you can assign these IP addresses to your local devices to access the Internet. 08:00.170 --> 08:00.680 OK. 08:01.010 --> 08:07.210 And after learning about this private IP addresses there are loop back IP addresses. 08:07.310 --> 08:17.710 And these are having the range from 1 2 7 0 0 up to 1 2 7 2 5 5 5 5 5 5. 08:17.870 --> 08:24.550 And these are reserved for self-testing purpose means so you can bring it to your local host with the 08:24.550 --> 08:34.390 help of these IP addresses and a 1 2 7 0 0 1 IP address which is reserved on Windows or Linux machines. 08:34.620 --> 08:35.050 OK. 08:35.150 --> 08:37.130 For bringing in the host. 08:37.240 --> 08:37.630 OK. 08:37.760 --> 08:39.930 It is sort of by default. 08:40.020 --> 08:47.660 Now we're talking about loop back and there is a concept of subject must so subnet mask is used to convert 08:47.660 --> 08:55.640 an IP address into network and recent host address it is in 32 bit number which is used to convert an 08:55.640 --> 08:57.760 IP address into network address. 08:58.100 --> 08:58.600 OK. 08:58.670 --> 09:01.650 So there are three different subnet mask. 09:01.790 --> 09:02.350 OK. 09:02.570 --> 09:03.510 Which are used. 09:03.680 --> 09:04.000 OK. 09:04.010 --> 09:11.720 According to the classes so far Placide the subnet mask is two firefighters 0.0 got zero for class B 09:11.720 --> 09:21.320 it is 2 5 5 2 5 5 0 0 and 4 class C it is 2 firefighter 2 5 5 5 5 0 0 0 get in this way. 09:21.520 --> 09:26.840 This subnet must be used for dividing the IP address Internet and host. 09:26.930 --> 09:27.330 OK. 09:27.500 --> 09:35.660 So after learning all these things here I would like to show you how to manage the network interface 09:35.690 --> 09:38.000 in the Linux environment practically. 09:39.220 --> 09:46.830 OK here you can see we are logging here on or 2:59 was seventeen point four. 09:47.380 --> 09:54.250 So there is a network card which is present on you early next month and so we're going to see here how 09:54.250 --> 09:58.350 to configure that network card which is having an IP address. 09:58.360 --> 09:58.660 OK. 09:58.660 --> 10:05.410 We share all the information with the world or access the internet with the help of this network address. 10:05.440 --> 10:11.280 So here to show you how to identify the global interfaces on your network. 10:11.530 --> 10:11.850 OK. 10:11.860 --> 10:20.260 So if config is a command which is use to identify the available interfaces so here when I die it will 10:20.260 --> 10:22.380 reveal this information. 10:22.510 --> 10:30.190 Here you can see at the first line here it shows the interface name that is ENP zero history. 10:30.330 --> 10:36.460 And then it really is the IP address its network Moskva broadcast IP address here. 10:36.700 --> 10:40.310 Display them to you that is Magsman transmission unit. 10:40.510 --> 10:41.140 OK. 10:41.350 --> 10:43.320 It really is their hardware address. 10:43.330 --> 10:47.010 It really is lots of information here about the interface. 10:47.010 --> 10:50.800 Ok at the bottom it really is to look back interface OK. 10:51.130 --> 11:01.840 So after I define all this information if you want to know all the EC2 deactivate their interfaces then 11:01.840 --> 11:04.760 just type hyphen in and hit enter. 11:04.780 --> 11:08.690 This will reveal all the interfaces which are active and inactive. 11:08.920 --> 11:16.930 OK that will come on shows the EC2 interfaces modren your type hyphenate then it triggers all the interface 11:16.930 --> 11:17.930 information. 11:18.130 --> 11:20.950 OK you can already Sybylla interface. 11:20.960 --> 11:29.510 So in order to be civil just type here if config interface name it can be zero. 11:30.450 --> 11:31.530 OK. 11:31.800 --> 11:32.690 Done. 11:33.280 --> 11:38.550 OK you need sudo X sudo OK. 11:38.670 --> 11:45.010 And now can get here you and see it does not showing us the interface. 11:45.300 --> 11:45.600 OK. 11:45.600 --> 11:52.940 In this way you can disable an interface and if you wan to a new interface just type up OK. 11:53.250 --> 11:57.200 In this way can hit enter again. 11:57.340 --> 11:58.270 Config. 11:58.530 --> 12:02.170 OK and here ENP zero is reasonable. 12:02.260 --> 12:05.520 Ok now how to set an IP address. 12:05.550 --> 12:09.300 OK here you can see is having an IP address then not zero. 12:09.410 --> 12:14.880 You got 15 or so you said IP address flossed here. 12:15.030 --> 12:22.650 Sudo then ifconfig an interface name that is in the 0 3. 12:22.810 --> 12:25.270 OK here they perjuries that one. 12:25.440 --> 12:27.090 So I want to change it. 12:27.090 --> 12:31.330 Good God I was going to go again and again. 12:31.870 --> 12:39.990 Now see here you can see the IP addresses change these IP address that is said you can't change the 12:39.990 --> 12:43.360 network mossed with the help of the system on. 12:43.370 --> 12:45.530 So just type Nic mosque. 12:45.600 --> 12:46.250 OK. 12:46.530 --> 12:51.270 And we learn that a homemade mosque can be set. 12:51.270 --> 12:54.130 So 10.0 not good but aren't too easy. 12:54.140 --> 12:56.680 Class one level IP address. 12:56.750 --> 13:02.630 Ok but here I want to set it class C level subnet mask here. 13:03.120 --> 13:07.570 2:55 got to define. 13:07.950 --> 13:09.870 Got zero OK here. 13:10.100 --> 13:17.490 Above you can see it is a classical one or class Eliel subnet mask and that is 2:55 not zero not 0.0. 13:17.510 --> 13:19.300 What I am going to set here. 13:19.320 --> 13:20.850 Class C. 13:21.190 --> 13:29.250 Now if config and here again see class C level subnet mask is set and there you can see at the next 13:29.250 --> 13:35.730 stop they must broadcast IP addresses there you can also sit and broadcast IP address just replace the 13:35.740 --> 13:42.260 subnet mask with broadcast and you consider IP address here. 13:42.500 --> 13:51.930 OK in this way you can use ifconfig come on to a certain IP mask broadcast IP address hooking all these 13:51.930 --> 13:52.820 things. 13:52.920 --> 13:55.060 You can also say I can give you. 13:55.080 --> 13:59.600 That is the maximum transmission unit of your network. 13:59.610 --> 14:06.200 So here I want to set it to 4000 here against your will. 14:06.610 --> 14:07.670 Fifteen hundred. 14:07.790 --> 14:08.230 OK. 14:08.340 --> 14:10.770 So I want to set it to 4000. 14:11.020 --> 14:13.200 And now lets see if Confect. 14:13.320 --> 14:20.090 OK now it's set to 4000 in this way you can set the maximum transmission unit. 14:20.270 --> 14:20.720 OK. 14:20.810 --> 14:22.750 Now let's talk about probably small. 14:22.910 --> 14:28.860 OK here let me show you how to enable the problem is more when you enable the promise more your network 14:28.860 --> 14:31.440 card is going to receive all the packets. 14:31.470 --> 14:35.250 OK you can learn online about promised more in detail. 14:35.360 --> 14:35.840 OK. 14:36.030 --> 14:39.960 So here let me show you how to enable it if you want to. 14:40.060 --> 14:54.710 Well they promised more just type ifconfig is can be zero history and then promise OK here spelling 14:54.710 --> 14:55.930 mistake. 14:56.300 --> 14:57.430 Now I don't know. 14:57.440 --> 14:59.530 Our problem is more reasonable. 14:59.840 --> 15:05.640 And if you want to disable this small just here iPhone and hit enter. 15:05.690 --> 15:12.090 Now the problem is more is discovered and this way you can enable and disable the promise more. 15:12.440 --> 15:16.620 OK the next thing that I would like to show you is how to set the McAndrews. 15:16.850 --> 15:19.390 What does mac address Mac stands for. 15:19.390 --> 15:23.200 Media Access Control and design hardware address. 15:23.320 --> 15:27.060 How get this off your network card and it is permanently mounted. 15:27.070 --> 15:28.340 You cannot change it. 15:28.490 --> 15:33.660 You can't change it completely but you cannot turn this at risk permanently. 15:33.920 --> 15:39.530 So you can set the hardware address here with the help of this ifconfig come on. 15:39.530 --> 15:45.220 So here what you need to do is you need to provide this information like this. 15:45.260 --> 15:50.460 That is Seurat configured for interface name then which w what hardware. 15:50.720 --> 15:53.020 The tower and there. 15:53.020 --> 15:57.700 Here you need to set this hardware address so here. 15:57.880 --> 16:08.090 Sabol you can see there is it here 0 8 0 0 2 7 3 0 6 9 is it is the hardware grids of our local. 16:08.090 --> 16:09.410 What a tool that will gag. 16:09.560 --> 16:32.350 So I want to play this 0 2 0 0 2 7 8 8 3 1 and here 6 5 0 and it's confect now here and see our hardware 16:32.410 --> 16:34.940 address is replaced with the new one. 16:35.080 --> 16:35.540 OK. 16:35.680 --> 16:39.530 So in this way you can see it in hardware Aggers of your network card. 16:39.610 --> 16:39.870 OK. 16:39.880 --> 16:43.010 But it is changed it temporarily not permanently. 16:43.180 --> 16:43.710 OK. 16:43.960 --> 16:51.870 After performing on the operations I would like to show you some other commands that is if open it down. 16:51.910 --> 16:55.610 These are used to enable and disable an interface. 16:55.960 --> 17:02.010 So to stay sudo if it is used to up an interface. 17:02.080 --> 17:03.220 OK. 17:03.360 --> 17:11.660 If you don't use use to download interface so you're in the zero state. 17:11.890 --> 17:19.470 And he didn't no ordinary cookies down here you can say OK. 17:20.240 --> 17:25.080 And if you want to abandon that goal just type folk and the interface name 17:28.310 --> 17:28.730 OK. 17:28.770 --> 17:36.080 Now let's take it this way you can and it will end miscible the interfaces. 17:36.150 --> 17:37.560 Well for this to come on. 17:37.590 --> 17:38.090 OK. 17:38.310 --> 17:42.890 So we learn how to manage the network interface in this.