WEBVTT 00:01.150 --> 00:07.560 In Linux terminology, there was an application that runs in the background waiting for you to use it. 00:08.040 --> 00:11.130 So your Linux system has dozens of services pre-installed. 00:11.730 --> 00:19.620 Of this, the most known, most well-known is the big you choose a punch web server, which is used 00:19.860 --> 00:22.650 for creating, managing and deploying web servers. 00:22.950 --> 00:27.420 But there are so many more for the purposes of this lecture. 00:27.850 --> 00:28.330 Um. 00:30.930 --> 00:39.720 Uh, is of this lecture on services I have selected just for that are, uh, of particular importance 00:39.720 --> 00:43.500 to the hacker Apache Web server open access. 00:44.400 --> 00:48.730 Uh, my scale and posterior escrow for serious, you know. 00:49.170 --> 00:55.200 So in this lecture, you will learn how to set up a web server, uh, with, uh, physical aspi with 00:55.200 --> 01:02.620 open storage and access with the my skill set in storage or hacking information with PostgreSQL. 01:03.240 --> 01:05.760 So starting, stopping and restarting services. 01:06.210 --> 01:11.850 So before we begin to work with these, uh, for critical, uh, circle our services, let's start by 01:11.850 --> 01:15.660 examining how to start, stop and restore services in Linux. 01:16.260 --> 01:22.080 Some services come as stopped and start with a graphical user interface and color Linux, much as you 01:22.080 --> 01:28.770 will, uh, on an operating system like Windows or Mac Home, where some services require, uh, use 01:28.770 --> 01:31.450 of the command line, which we will look at here. 01:31.470 --> 01:35.580 So here and here is the basic syntax of service this year. 01:35.580 --> 01:38.640 Service, uh, server is here. 01:39.120 --> 01:40.200 Serve its name. 01:41.920 --> 01:47.770 Name, start, uh, start, stop or restart. 01:49.170 --> 01:49.560 Yes. 01:51.390 --> 01:59.900 So this is the basic syntax of managing services who start the epic two server web server or hashed 01:59.910 --> 02:00.960 ITBP servers. 02:01.500 --> 02:05.340 You will enter here server service here. 02:05.790 --> 02:07.830 Apache2 to start. 02:10.360 --> 02:17.920 And enter your password, carry a password here to stop the server override service. 02:19.460 --> 02:20.410 Perpetual. 02:22.230 --> 02:22.680 Stop. 02:24.810 --> 02:29.340 Like that and enter your comment, you password, actually. 02:30.360 --> 02:35.640 So usually when you make a configuration change to an application or service by altering its plaintext 02:35.640 --> 02:42.570 configuration file, you need to restart the service to capture, um, the new configuration. 02:42.900 --> 02:44.400 He'll make that risk card. 02:44.670 --> 02:45.720 Here it is. 02:45.720 --> 02:47.970 You will enter here this comment. 02:48.390 --> 02:54.630 So not now that you understand how to start, stop and restart services from the command line. 02:54.810 --> 03:01.020 So let's move onto the four more subcritical critical linked services to hackers. 03:01.560 --> 03:05.040 So let's create and how should you be a server which appear to have server? 03:05.490 --> 03:10.350 So the official web server is probably the most commonly used service on the Linux systems. 03:10.890 --> 03:15.310 So a pitch is formed over 60 percent of the world's web servers. 03:15.310 --> 03:22.230 So any self-respecting Linux administrator should be familiar with it as they could aspiring to hack 03:22.230 --> 03:22.860 web sites. 03:23.190 --> 03:28.980 It's critical to understand the inner workings of a patch, websites and the bacon database of these 03:28.980 --> 03:29.460 sites. 03:29.940 --> 03:38.400 So you can also, uh, you can also use a patch to set up your own server from which you called serve, 03:38.520 --> 03:46.560 um, malware via cross-site scripting accesses to anyone who visits your site or you call cloning websites 03:46.560 --> 03:49.250 and redirect traffic to your site. 03:49.260 --> 03:52.000 The abuse of the domain name system DNS. 03:52.710 --> 03:58.170 So in either of these cases, your basic knowledge is of a pitch is required. 03:58.530 --> 04:03.110 So let's start and batch if you have a color, uh, running on your system. 04:03.450 --> 04:04.860 Apache is already installed. 04:05.190 --> 04:09.150 So many other Linux distros have it installed by default as well. 04:09.420 --> 04:15.330 If you don't have a patch installed, you can download and install it from the repositories by entering, 04:15.660 --> 04:17.850 uh, sudo aptitude. 04:17.850 --> 04:24.600 Install and install a patch to and enter your password here. 04:25.140 --> 04:31.910 As you can see here, there's a I have an update to do, so I will update here. 04:31.920 --> 04:33.240 It's actually not. 04:33.240 --> 04:37.710 A big update is, uh, 76 kilobytes, uh, update. 04:37.920 --> 04:41.010 So it will, uh, complete now. 04:43.090 --> 04:43.450 So. 04:45.160 --> 04:52.390 Uh, the Apache Web server is often associated with the my school database, which we will look at in 04:52.390 --> 04:53.440 the next lectures. 04:53.860 --> 05:03.340 And these two services are very often paired with a scripting language such as Pear or IBM to develop 05:03.340 --> 05:04.300 web applications. 05:04.600 --> 05:12.280 This combinations of Linux, Apache, Uh, Maya, Skill, Linux and Pure Peril forms a powerful and 05:12.280 --> 05:19.330 robust platform for the development and deployment of web based applications known as like a ampm. 05:19.870 --> 05:26.200 So these are the, uh, most widely used tools for developing websites in the Linux fold, and they 05:26.200 --> 05:28.900 are very popular in the Microsoft tool. 05:29.350 --> 05:34.720 So, uh, where they are generally referred to as double ampere. 05:35.050 --> 05:39.790 Uh uh, with the We Stand W for standing for windows. 05:40.210 --> 05:43.690 So the first step, of course, is to start a patch. 05:43.690 --> 05:44.170 -- on. 05:44.170 --> 05:45.370 So let's get started. 05:45.820 --> 05:49.690 So in Kaleem Co, two applications here. 05:50.230 --> 05:52.210 Um, services here. 05:54.310 --> 05:56.110 OK, services. 05:57.450 --> 06:05.880 Here and typically, yeah, or we can just, uh, accomplish the same from the common line by entering, 06:06.180 --> 06:10.710 uh, services, uh, attached to actually. 06:12.480 --> 06:18.240 Ross, yes, this service attached to start here. 06:18.690 --> 06:25.270 So we start a virtual service, know that the pitch is running, it should be able to serve up actually 06:25.320 --> 06:29.490 its intercom on there, so it should be able to serve up its default web page. 06:29.490 --> 06:31.950 So open our web browser here. 06:32.150 --> 06:41.190 Yeah, it's uh, actually as Firefox, Mozilla, Firefox and enter the localhost domain or localhost 06:41.190 --> 06:42.630 domain here. 06:45.300 --> 06:48.150 Here, uh, local or state here. 06:48.720 --> 06:59.020 And this you can see here, our local host is working for a local who is the same as 127.0.0.1 here. 06:59.040 --> 07:07.230 As you can see here, there's, uh, redirecting to the same, um, web page because we just started 07:07.230 --> 07:11.910 our special, uh, web server here as you can see our pitch to to be in default page. 07:12.210 --> 07:18.180 So this is the default page used to test the correct operation of the Pitch Tool server after installation 07:18.360 --> 07:19.530 on Debian systems. 07:19.980 --> 07:25.710 If you can read this message, it means that the Apache, uh, Charlotte Observer installed at this 07:25.710 --> 07:27.840 site and is working properly. 07:29.700 --> 07:40.470 So let's edit the index hushed image file, a patch default web page is them is at see the Verge Double 07:40.470 --> 07:44.400 W W Hashed email and cached the email here. 07:44.400 --> 07:46.510 And as you can see, there's an index of steam. 07:46.530 --> 07:54.360 So this is default web page we see in here so you can edit the unnecessary email file to serve up whatever 07:54.360 --> 07:55.460 information you want. 07:55.470 --> 07:57.060 So let's create our own here. 07:57.360 --> 07:58.740 So pseudo here. 07:59.520 --> 08:05.160 Actually, we don't need to the right mouse pad index that harsh team. 08:06.920 --> 08:09.050 As you can see, we opened our eyes. 08:09.320 --> 08:14.600 It's $3 million, so we don't operate normally when you write this file, so. 08:16.200 --> 08:17.250 Um, so. 08:18.840 --> 08:24.180 Not at the default, the pitcher has exactly the text that was displayed when we opened our browser 08:24.390 --> 08:25.170 to localhost. 08:25.380 --> 08:29.250 But in the extreme of form of this, you can see it appears to default. 08:29.590 --> 08:30.870 Page four See it! 08:32.900 --> 08:33.260 So. 08:35.340 --> 08:42.480 All we need to do is to edit or replace this file, to have our web server display the information we 08:42.480 --> 08:43.380 want, for example. 08:43.680 --> 08:44.660 We can change it. 08:44.940 --> 08:46.300 We will change it completely. 08:46.340 --> 08:55.620 But for example purposes, I will change it, for example, um uh, hacking, uh, training course. 08:56.160 --> 09:02.670 Uh, take that chrome, for example, that Chrome and let's restart our server here. 09:03.890 --> 09:04.410 Make sure. 09:08.390 --> 09:10.670 Making training, as you can see it here in training. 09:11.390 --> 09:17.840 Uh, code-switching title of it, which is unless change inside of latex actually as well. 09:18.650 --> 09:19.580 Page the. 09:22.090 --> 09:22.990 So here. 09:24.120 --> 09:24.660 Here. 09:27.600 --> 09:29.250 And tears well. 09:32.030 --> 09:34.520 So let's check ups, I'm sorry. 09:40.220 --> 09:40.520 Here. 09:41.790 --> 09:42.540 So now. 09:44.070 --> 09:46.800 We can change, actually. 09:49.610 --> 09:55.100 Here, that sentiment and as you can see, her acting training course, technical come here. 09:55.520 --> 09:57.730 We changed it here. 09:57.740 --> 10:02.990 So let's add the latest victim of file and add an existing file. 10:03.260 --> 10:09.260 No, that we have this web server up and running at the index extremophile open so we can add whatever 10:09.860 --> 10:13.400 text we like to the web server to serve up. 10:13.910 --> 10:16.700 So we will create some simple entertainment blogs. 10:17.090 --> 10:19.190 So let's create this page here. 10:19.640 --> 10:25.160 Um, with the latest here and uh, let's open our tech search. 10:25.160 --> 10:29.750 So Teemo, uh, by the tank here. 10:29.750 --> 10:40.320 By this is actually increase it a the remote by the body and the list calls it your buddy here, uh, 10:40.380 --> 10:42.890 clothes or you other team as well. 10:43.490 --> 10:47.390 So here it's of either one. 10:47.660 --> 10:48.860 Uh, here here. 10:48.860 --> 10:49.430 And. 10:51.180 --> 10:57.420 We're actually in the wrong here, and he was born here, so. 11:00.410 --> 11:02.870 So, for example, uh. 11:04.950 --> 11:13.830 Take pills is, uh, taking it's best to learn from. 11:14.070 --> 11:16.050 Take bins here, for example. 11:16.530 --> 11:17.060 So, um. 11:19.940 --> 11:22.070 For example, this paragraph here as well. 11:24.010 --> 11:25.220 Up here. 11:27.110 --> 11:30.950 If you want to learn hacking. 11:31.960 --> 11:41.680 Uh, tech is not calling you to me, but come here, for example, and let's add another, uh, paragraph, 11:42.040 --> 11:43.390 uh, paragraph here. 11:43.810 --> 11:44.410 So. 11:46.290 --> 11:46.890 Uh. 11:48.400 --> 11:56.700 You are the you are in the best place to learn something. 11:58.630 --> 12:01.210 Or hacking spatial. 12:02.680 --> 12:03.010 Here. 12:04.410 --> 12:10.800 So once you enter the text, exactly or you can change, uh, whatever you want here. 12:11.680 --> 12:18.540 Uh, save file here by, uh, control plus save is, uh, clicking in keyboard here. 12:18.540 --> 12:22.380 Or you can save you're just clicking on this here. 12:22.680 --> 12:25.650 So let's restart it unless you can see here. 12:26.340 --> 12:28.230 Um, see what happens? 12:28.470 --> 12:34.950 So then we get your browser runs again and enter, uh, localhost or your IP and look alive here this 12:34.950 --> 12:35.190 year. 12:35.190 --> 12:37.830 As you can see here, we change it. 12:38.010 --> 12:40.680 So, um, now let's. 12:42.910 --> 12:45.550 To learn, uh, how open is to. 12:46.240 --> 12:48.220 And um. 12:54.050 --> 12:59.570 Something here, for example, my escape less well here and other information here. 13:06.100 --> 13:11.410 So and in later lectures, there was a creator Raspberry Pi application as well. 13:12.220 --> 13:15.340 So our lecture is done here. 13:15.520 --> 13:20.850 So Linux has no services that are in the back run until the user needs them. 13:20.920 --> 13:28.140 So the Apache Web server is the most widely used, but a hacker for the familiar with my eskdale a situation 13:28.210 --> 13:31.420 post a squirrel here for various tasks, too. 13:31.840 --> 13:38.560 So you will learn more more and more MySchool about my skills and Apache server here. 13:39.070 --> 13:43.570 So this is just this wasn't just basic example here. 13:44.050 --> 13:49.900 So in this lecture, we cover the absolute basics of getting started with these services. 13:50.260 --> 13:55.270 Once you are comfortable, comfortable with your learning system, I urge you to go out and explore 13:55.270 --> 13:56.920 each of these services further.