1 00:00:00,090 --> 00:00:07,110 So now let's talk about this S&P protocol, S&P simple network management protocol. 2 00:00:07,950 --> 00:00:10,590 So what is the purpose of this Portakabins? 3 00:00:10,620 --> 00:00:13,750 It is used to manage the but getting that information. 4 00:00:14,340 --> 00:00:19,330 So if you have 100 computers, you cannot go to each and every computer to get information. 5 00:00:19,770 --> 00:00:21,180 So it is protocol. 6 00:00:21,190 --> 00:00:30,090 You can just get that the way this information is in this protocol, they are going to each and every 7 00:00:30,090 --> 00:00:30,570 computer. 8 00:00:31,730 --> 00:00:39,410 And Rotar implements this service in this Rotar, this service is implemented, and what this protocol 9 00:00:39,410 --> 00:00:43,850 does is it combines management software and master computer. 10 00:00:44,090 --> 00:00:50,930 So you are the head of a company and this management situation software in a computer that you are to 11 00:00:50,930 --> 00:00:52,400 monitor, to operate. 12 00:00:52,760 --> 00:00:58,520 If you have a computer, you can install this management software and you need to ensure the agents 13 00:00:58,520 --> 00:01:03,340 in our computer he can install this weather accurately and often. 14 00:01:03,710 --> 00:01:10,060 Agents in our computer then as an MP helps to get CPU's discusses and gets jealous, etc.. 15 00:01:10,400 --> 00:01:18,230 So from this administration, you are the computer's CPU usage are discuses or whether they are on or 16 00:01:18,230 --> 00:01:18,480 off. 17 00:01:19,460 --> 00:01:21,980 So it's very easy sitting in your place. 18 00:01:21,980 --> 00:01:29,030 You can just get the information of our computers and this service runs on your reports once you show 19 00:01:29,030 --> 00:01:29,120 up. 20 00:01:29,160 --> 00:01:37,340 And so this is an easy UDP protocol and this one won't put you use it for my administration software 21 00:01:37,910 --> 00:01:46,760 asking for the agent about the information and these agents since the responses, I mean, the status 22 00:01:46,760 --> 00:01:50,260 or any information, why are these 162 port? 23 00:01:50,300 --> 00:01:54,580 So people are open under the service. 24 00:01:54,630 --> 00:01:57,550 Those are the Europeans, 161 and 162. 25 00:01:58,370 --> 00:02:03,130 So this of is very important in that organization. 26 00:02:04,220 --> 00:02:09,860 So I was referring to I am an employee and I did not do the work and I was simply watching the Netflix. 27 00:02:10,160 --> 00:02:20,540 So the I how the computer given by the organization and they can the preinstalled these employee management 28 00:02:20,540 --> 00:02:30,620 software and if I watch any movies or Netflix, then immediately the network bandwidth goes high and 29 00:02:30,620 --> 00:02:33,260 it will raise the alarm for the. 30 00:02:35,310 --> 00:02:36,450 So admissions come to. 31 00:02:36,690 --> 00:02:43,290 So what you're doing with this hypothetical when bandwidth, so what you're using for whether you are 32 00:02:43,340 --> 00:02:52,050 already moving or watching, so that in that case, it strictly restricts an employer to do the work. 33 00:02:52,290 --> 00:02:53,950 That is one plus point at all. 34 00:02:53,970 --> 00:02:59,880 So it's not the point because this product is used for getting this information. 35 00:02:59,880 --> 00:03:06,360 But some applications are being made like employee management software to get even to watch even what 36 00:03:06,370 --> 00:03:08,130 they're like screen sharing. 37 00:03:08,890 --> 00:03:11,250 But it's all about privacy. 38 00:03:11,250 --> 00:03:15,900 But in office hours, you should not do some movies watching all those things. 39 00:03:15,900 --> 00:03:16,140 Right. 40 00:03:16,890 --> 00:03:20,760 So this is what is best for the software. 41 00:03:22,020 --> 00:03:24,570 And it's a piece of three versions of the note. 42 00:03:24,900 --> 00:03:27,920 And those two options are watching one, two and three. 43 00:03:28,410 --> 00:03:34,720 And this is also contain possible like strings and testing so you can compress information. 44 00:03:34,920 --> 00:03:39,720 So these are sort of strings are you can also call them as passwords. 45 00:03:39,990 --> 00:03:45,030 And these passwords are public and private by default. 46 00:03:46,920 --> 00:03:53,460 And this I want to talk about first versions, version one, 2003 and the introduction one, and to 47 00:03:53,460 --> 00:03:55,910 see the things these passwords are not. 48 00:03:55,930 --> 00:04:01,450 And so they will transfer the data in appendix format. 49 00:04:02,070 --> 00:04:11,270 So if anyone logging in to this router with this community string's, any attacker can do the math against 50 00:04:11,460 --> 00:04:13,200 this plaintext data. 51 00:04:13,200 --> 00:04:18,150 And in the plain text data, you can see the strings very clearly in this person wanted to see. 52 00:04:18,330 --> 00:04:25,470 So in version three, they have implemented the encryption, but so many us in organizations are using 53 00:04:25,490 --> 00:04:30,330 the want to see because they did not have the if you find out that actually wanted to see, you can 54 00:04:30,330 --> 00:04:34,110 simply report that these are not updated. 55 00:04:34,110 --> 00:04:35,500 You need updated version three. 56 00:04:36,950 --> 00:04:45,890 And the different parts of the public and private, so this I can access some major, like small information 57 00:04:45,890 --> 00:04:55,520 using the public Streamcast public and with this private string I can access and that data of our computers 58 00:04:56,630 --> 00:05:04,820 so that our IP address and interface status, whether these are personal, are those data with the public. 59 00:05:04,820 --> 00:05:08,750 I just get the right information are like just basic information. 60 00:05:09,200 --> 00:05:19,310 And these defaults, these are the default passwords inserted when the road is manufactured and these 61 00:05:19,490 --> 00:05:23,210 passwords are not changed when the shelter set up. 62 00:05:23,210 --> 00:05:27,910 That as an officer is most of these will be public or private. 63 00:05:28,760 --> 00:05:34,690 And if you found out that in a in a pinch that these are the public and private, you need to report 64 00:05:34,700 --> 00:05:41,150 that you should change the community strings to somewhere else and everything is OK. 65 00:05:41,480 --> 00:05:47,750 So if you want to this, you need to pass some of the correct structure and we need to query all the 66 00:05:47,750 --> 00:05:49,210 information using this object. 67 00:05:49,520 --> 00:05:54,590 So this object is called out to tree, and this is represented by this one. 68 00:05:55,070 --> 00:05:56,240 This is a sample image. 69 00:05:56,600 --> 00:06:00,380 And first one is root and the user or the Internet. 70 00:06:00,620 --> 00:06:06,770 And from here on was the branching goes on the tree management expert in the private and one of the 71 00:06:08,690 --> 00:06:11,480 information agencies IP interface system. 72 00:06:11,510 --> 00:06:16,750 So if you want to access the system's information, what you want to do is you need to use some tools 73 00:06:17,260 --> 00:06:19,950 to articulate a simple pattern problem. 74 00:06:20,390 --> 00:06:23,850 So we'll be doing this in a punishing section. 75 00:06:24,920 --> 00:06:31,190 So I would just say you could access these variables are like informations are you need to do is walk 76 00:06:31,190 --> 00:06:35,190 down from top to bottom of the tree and put the dot in between them. 77 00:06:35,420 --> 00:06:41,420 So if I want to access the interfaces, what I want to do is I want to create a screen. 78 00:06:41,700 --> 00:06:49,010 It says that one that one dot, dot, dot, dot so that users interface for. 79 00:06:49,340 --> 00:06:56,090 So if you pass this one three, one does not want to do a tool like a set of piguet. 80 00:06:56,450 --> 00:07:02,810 And with the public or private string, if you know them, then you could easily get the information 81 00:07:02,810 --> 00:07:05,950 of the interfaces of the computer. 82 00:07:06,140 --> 00:07:12,470 And in the same way, if you access this one, not one, not one, not one, not for you get the IP 83 00:07:12,470 --> 00:07:17,450 address of the commission or you can get all the IP addresses of our machines. 84 00:07:18,920 --> 00:07:27,690 So in this way you can just construct a tree like structure and you can just go with this data format. 85 00:07:28,100 --> 00:07:35,060 So one more thing I want to tell is there is another translator called Information Base. 86 00:07:36,590 --> 00:07:43,850 And what this does is this might be the translations for these variables. 87 00:07:44,030 --> 00:07:51,620 So if I say interfaces, if I want to pass this one three six one one one two, it uses me interface 88 00:07:51,800 --> 00:07:57,290 so I can check these translations for this, uh, or do three. 89 00:07:57,290 --> 00:07:59,380 That is of the identifier three. 90 00:08:00,730 --> 00:08:07,930 So many wonders how their own message information, Bush's support, if you can see the enterprise level, 91 00:08:07,940 --> 00:08:14,080 that if you want to access this, the Sisco's number is nine from this, nine on what you can exoduses 92 00:08:14,080 --> 00:08:20,020 course information from in the several Microsoft Office, three, one one and the same with Juniper 93 00:08:20,020 --> 00:08:21,550 and maybe has a 266. 94 00:08:21,910 --> 00:08:25,060 So this one does have the automated information base. 95 00:08:25,750 --> 00:08:28,840 But for the most of the time, these will be the same. 96 00:08:29,170 --> 00:08:32,890 The normal information you get are the same. 97 00:08:33,280 --> 00:08:35,510 So this is all you need to know. 98 00:08:35,540 --> 00:08:36,710 You need to know about this. 99 00:08:36,730 --> 00:08:38,560 I said I'm sorry. 100 00:08:38,570 --> 00:08:44,060 Yes, I know that this is a message and punishment, not it's management information that's very confusing 101 00:08:44,080 --> 00:08:45,840 and saying sorry for that. 102 00:08:46,000 --> 00:08:50,340 Just this is the management information with each one that had different management information, which 103 00:08:50,350 --> 00:08:50,550 is.