1 00:00:00,420 --> 00:00:06,570 We will be talking about the ping comment and traceroute comment so far, shipping companies use it 2 00:00:06,570 --> 00:00:15,240 to test the connection between the source and destination, and Presswood comment uses it to define 3 00:00:15,690 --> 00:00:17,730 to show us the actual. 4 00:00:17,730 --> 00:00:22,100 But the packets are going from source to destination. 5 00:00:22,830 --> 00:00:24,590 And let's see first come. 6 00:00:25,470 --> 00:00:25,800 OK. 7 00:00:25,860 --> 00:00:27,900 Let me show you the IP address of my. 8 00:00:29,640 --> 00:00:33,480 So we need to type of conflict to get that information. 9 00:00:34,080 --> 00:00:40,440 So this is the Petraeus is my wife and it has been I responded to that one. 10 00:00:40,490 --> 00:00:41,900 You should not. 11 00:00:43,870 --> 00:00:48,740 So now I can subpoena Google dot com. 12 00:00:50,170 --> 00:00:57,460 So we need to bring the Google dot com and you can see Google dot com does not have any IP address and 13 00:00:57,460 --> 00:00:59,410 it will be resolved by a server. 14 00:01:03,500 --> 00:01:12,080 So first, being guru.com and first thing my computer did is it received the IP address from my ISP 15 00:01:12,080 --> 00:01:12,420 server. 16 00:01:12,560 --> 00:01:17,210 We have already seen how business works in that way. 17 00:01:17,240 --> 00:01:21,100 We have got the good outcomes site IP address. 18 00:01:21,110 --> 00:01:21,770 Is this fun? 19 00:01:22,310 --> 00:01:27,730 And I'm going to show you not the computers are Google. 20 00:01:28,160 --> 00:01:34,840 OK, so 64 bytes from this name server and you can see ICMP sequence one. 21 00:01:35,240 --> 00:01:37,790 This is the sequence is the order of packet. 22 00:01:37,940 --> 00:01:43,880 You are sending these off to a packet you sent and this is the second. 23 00:01:43,890 --> 00:01:45,340 This is the third and this is the fourth. 24 00:01:45,560 --> 00:01:51,730 And this is called Time to do and time two for one participant for that one milliseconds. 25 00:01:52,640 --> 00:02:01,730 So this bank can vary within one second and it is a 64 waits to see what from this name server and just 26 00:02:01,730 --> 00:02:02,650 the IP address. 27 00:02:02,660 --> 00:02:03,170 This one. 28 00:02:04,490 --> 00:02:12,110 And here you can see the company statistics track report from the spring and fall package has been transmitted. 29 00:02:12,140 --> 00:02:14,690 You can see this is one package and this is one. 30 00:02:14,690 --> 00:02:15,200 This one. 31 00:02:15,200 --> 00:02:19,680 And these are four packets transported and we have received four. 32 00:02:20,150 --> 00:02:23,330 So there is zero percent lost back across. 33 00:02:24,480 --> 00:02:27,990 And the total time is around, it's like three seconds, right? 34 00:02:29,450 --> 00:02:36,420 OK, now we have some options for this Pinkman you can set payment. 35 00:02:36,480 --> 00:02:38,430 Right to do. 36 00:02:39,210 --> 00:02:42,740 And it will wait for two seconds for sending Etchberger. 37 00:02:44,810 --> 00:02:51,680 For shipping minus eight to guru.com now for Spicket has been sent and to the second bagrut has been 38 00:02:51,680 --> 00:02:51,900 sent. 39 00:02:52,250 --> 00:02:57,720 You can see this delay between the time of two seconds because we have to find the item. 40 00:02:59,120 --> 00:03:00,380 So this is one option. 41 00:03:02,060 --> 00:03:09,060 And another option is you can just switch for a number of packets you need to send waiting for it to 42 00:03:09,110 --> 00:03:10,140 send infinitely. 43 00:03:10,640 --> 00:03:12,260 And if I say five packets. 44 00:03:16,090 --> 00:03:17,650 And the C stands for count. 45 00:03:17,680 --> 00:03:21,560 So after five that I did not press the controls. 46 00:03:21,580 --> 00:03:27,550 You see, it has automatically stopped because we have said that after count of packets, you just stop 47 00:03:27,550 --> 00:03:27,970 the ping. 48 00:03:30,100 --> 00:03:33,100 And you can see Finback, a transmitter with you. 49 00:03:34,090 --> 00:03:39,890 So what if I been to a server, which is not there certainly outcome. 50 00:03:39,940 --> 00:03:41,260 So of course, this is not the. 51 00:03:44,580 --> 00:03:45,330 OK, OK. 52 00:03:45,820 --> 00:03:49,410 I don't know if these are going on right now, OK, that's. 53 00:03:52,270 --> 00:03:55,600 OK, we need to set protocol. 54 00:03:58,810 --> 00:04:02,140 Good name or service, not not that means. 55 00:04:03,530 --> 00:04:07,580 The Dina's name for this dot or has not been found. 56 00:04:07,610 --> 00:04:09,710 That's what it was written said was not for. 57 00:04:09,990 --> 00:04:12,310 So that's being. 58 00:04:14,510 --> 00:04:22,010 Thing and not a dirty dirty, which is a private IP address for the IP address IP range. 59 00:04:22,070 --> 00:04:29,350 And this is a private IP address for the class and it has not been assigned to any of my computers that 60 00:04:29,750 --> 00:04:36,890 until now, since we have given you can also get IP address and it's just ping this IP address with 61 00:04:36,890 --> 00:04:38,340 the 56 Bitauto. 62 00:04:38,690 --> 00:04:39,920 Let's see what happens. 63 00:04:41,330 --> 00:04:47,830 So this ping utility keeps on trying for getting the marketers to this dirty dirty. 64 00:04:48,290 --> 00:04:54,170 And it is because there is no IP address, no computer, this IP address, free press control. 65 00:04:54,290 --> 00:04:58,510 See, you can see 24 packets has been transferred. 66 00:04:59,330 --> 00:05:08,120 What that means are these packets are lost during the transmission because we do not get any acknowledgement. 67 00:05:08,340 --> 00:05:15,220 That's why 100 percent back across time is this much and this ping come in. 68 00:05:15,530 --> 00:05:18,160 These messages are from ICMP protocol. 69 00:05:18,560 --> 00:05:20,960 These are the Internet control protocols. 70 00:05:21,470 --> 00:05:31,010 And this protocol just sends the wrong message when there is no service or no host, not phone or something 71 00:05:31,340 --> 00:05:31,700 like that. 72 00:05:33,230 --> 00:05:35,930 So another comment we are going to use. 73 00:05:35,930 --> 00:05:38,290 Traceroute, Traceroute. 74 00:05:38,870 --> 00:05:39,670 It's very simple. 75 00:05:39,680 --> 00:05:42,050 Come on, Traceroute and Google dot com. 76 00:05:46,060 --> 00:05:50,330 OK, this traceroute traces the path from your computer to the guru.com. 77 00:05:50,650 --> 00:05:59,410 So I want to send if I want to send a packet for you to go to my gate, which is the router I have already 78 00:05:59,410 --> 00:05:59,770 seen. 79 00:06:00,040 --> 00:06:07,450 So you shown in the previous year, this is my tippling IP address and this is the gate with the first 80 00:06:07,450 --> 00:06:15,610 thing your computer does is it will send the packet to default gateway because there is this Google 81 00:06:15,610 --> 00:06:18,470 that comes IP address does not exist on your network. 82 00:06:18,700 --> 00:06:22,360 That's why this computer sends 230 for the gateway, which is Maroota. 83 00:06:22,540 --> 00:06:30,750 And then this router, since the data to the nearest road that knows about this guru.com and this is 84 00:06:30,910 --> 00:06:40,960 not perpendicular to six, and these are the other devices which are in the path between our computer 85 00:06:40,960 --> 00:06:43,390 and finally guru.com computer. 86 00:06:44,350 --> 00:06:48,430 And you can see there are 30 hops, Max, and these are only nine hops. 87 00:06:48,430 --> 00:06:53,040 Hops means the intermediate distance between the source and destination are hops. 88 00:06:55,840 --> 00:07:01,510 So finally, we have got the proof from this IP address, which is this one guru.com. 89 00:07:03,100 --> 00:07:07,950 And the intermediate hops are one, two, three, four, five, six, seven, eight. 90 00:07:07,970 --> 00:07:10,330 You can just say there are eight hops. 91 00:07:10,330 --> 00:07:12,940 If you include the router, you can see nine hops. 92 00:07:14,670 --> 00:07:22,320 OK, that's all you need to know about this spring and summer, so the government is using to test the 93 00:07:23,230 --> 00:07:30,480 accountability between you and their definition computers and Traceroute is precious. 94 00:07:30,480 --> 00:07:34,730 Are the parts are there to assist in between your source and destination?