WEBVTT 00:00.880 --> 00:07.900 Now before moving on and talking about the other security domains, such as the disposable and the vault. 00:07.900 --> 00:13.750 In this lecture, I want to talk about another task that is very essential and that you'll probably 00:13.750 --> 00:15.100 need to do often. 00:15.880 --> 00:19.390 This task is basically installing software. 00:19.480 --> 00:25.000 So if you look at the machines that we have right now, for example, the personal or even the work 00:25.000 --> 00:27.850 machine, they don't really have a lot of software. 00:27.850 --> 00:33.130 We have Firefox, we have the files manager at terminal and that's pretty much it. 00:33.130 --> 00:39.160 We don't have a word editor, we don't have pigeon, for example, for instant messaging and so on. 00:39.310 --> 00:46.060 So you can do the simple tasks such as opening images, playing music and videos and accessing the internet. 00:46.060 --> 00:51.520 But anything outside of that, you'll probably need to install software to do that. 00:51.970 --> 00:58.510 Now, as we do this, you'll also get a better understanding on the structure of cubes, and you'll 00:58.510 --> 01:04.120 have a better understanding of the template virtual machines, the ones that we have right here. 01:04.780 --> 01:11.620 Now, as I said before, the template virtual machines are machines that you're not supposed to use 01:11.620 --> 01:13.780 to run your day to day tasks. 01:14.290 --> 01:21.010 These are machines which the other machines, such as the domains that we have here, are based of. 01:21.670 --> 01:25.720 Keep going through this lecture and you will understand exactly what I mean. 01:26.400 --> 01:29.670 So right now I have my work machine running right here. 01:29.670 --> 01:36.960 As you can see, I have my file manager and as we seen before, if we store stuff within our home directory, 01:36.960 --> 01:39.330 so we are in home right now as you can see. 01:39.330 --> 01:46.590 And anything we store in here will be persistent and will be maintained after we restart or shut down 01:46.590 --> 01:48.540 the domain or the virtual machine. 01:49.170 --> 01:56.070 But if you store anything outside of this, which is what applications, libraries and packages get 01:56.070 --> 01:59.760 installed, they get installed outside of your home directory. 01:59.850 --> 02:04.650 Anything that gets installed outside of the home is not persistent. 02:04.650 --> 02:11.190 So every time you restart or shut down the computer, anything outside of the home directory goes back 02:11.190 --> 02:13.320 to its original state. 02:13.590 --> 02:15.750 This is done for security reasons. 02:15.750 --> 02:21.720 For example, if someone manages to hack into this domain and they install some malware that will start 02:21.720 --> 02:27.300 every time you start your computer, this will automatically be removed because it will be installed 02:27.300 --> 02:29.400 outside of this home directory. 02:29.730 --> 02:34.200 So anything outside of the home goes back to its original state. 02:34.200 --> 02:41.880 Every time you restart or shut down the computer, this original state is stored in your template virtual 02:41.880 --> 02:42.660 machine. 02:43.560 --> 02:51.870 So let me show you, if we go here to the cubes and we click on the cube manager, you'll get a program 02:51.870 --> 02:53.610 similar to a task manager. 02:53.610 --> 02:59.580 And in here you'll see all of the cubes, all of the virtual machines that you have, and it will show 02:59.580 --> 03:04.140 you important information about each one of these machines. 03:04.440 --> 03:09.630 Now, again, you'll notice the domains are the ones that have colors in here, and these are the ones 03:09.630 --> 03:11.940 that we use for our day to day tasks. 03:11.940 --> 03:16.020 And then we have the template and the system virtual machines in black. 03:16.770 --> 03:22.530 Now you'll notice for each of these domains, for example, for the personal and the template column, 03:22.530 --> 03:27.540 it's telling us what template it's running or what operating system it's running. 03:27.720 --> 03:34.740 So you can see the personal is running fedora 30, you can see the untrusted, the sis net, the work, 03:34.740 --> 03:38.610 all of them run the template that is called Fedora 30. 03:38.910 --> 03:46.050 Now Fedora is a Linux operating system and basically each one of these virtual machines or security 03:46.050 --> 03:50.160 domains are based on the Fedora 30 template. 03:50.550 --> 03:57.540 So when we start the work virtual machine, it uses the Fedora 30 template so we can see the fedora 03:57.540 --> 03:58.590 30 in here. 03:58.740 --> 04:05.400 It creates a virtual machine that uses this virtual machine as a template, and the only thing that 04:05.400 --> 04:07.650 it replaces is the home directory. 04:07.650 --> 04:13.470 So the only thing that it replaces is what we see in here, which are the user files that they use in 04:13.470 --> 04:20.010 their day to day tasks now because every time we start the computer, it pulls everything outside of 04:20.010 --> 04:22.620 the home from the template virtual machine. 04:22.620 --> 04:29.160 This means that if we install software on the template virtual machine, it will be installed on all 04:29.160 --> 04:33.180 of the virtual machines that use this template as a template. 04:33.180 --> 04:41.100 So if I installed Pidgeon, for example, in my Fedora 30 template work, personal untrusted, all of 04:41.100 --> 04:47.580 these virtual machines use the fedora 30 as a template and therefore all of these virtual machines will 04:47.580 --> 04:50.850 automatically have the software installed on them. 04:52.290 --> 04:58.110 Now this can also be dangerous because keep in mind, if you install malware on your template virtual 04:58.110 --> 05:03.980 machine, all of the other virtual machines based on this template will inherit the malware. 05:03.990 --> 05:09.840 So you want to be very careful on what you install on your template virtual machine. 05:10.440 --> 05:16.650 Now as an example, I actually want to install Libre Office, which is a program that allows us to open 05:16.650 --> 05:23.340 the different office files in Linux because I want to open this word file in future lectures. 05:23.730 --> 05:28.180 So I want to be able to use Libre office and my work domain. 05:28.200 --> 05:32.780 And based on this, we know work is based on the Fedora template. 05:32.790 --> 05:38.790 Therefore, we're going to install Libre office on Fedora 30 and it will automatically be available 05:38.790 --> 05:44.250 for all of the other virtual machines that use the Fedora 30 as their template. 05:45.090 --> 05:51.120 Now, before doing so, before going and installing anything on this, we need to enable networking 05:51.120 --> 05:58.320 on this virtual machine because by default to improve its security, the template virtual machines are 05:58.320 --> 06:01.620 not configured to be connected to the Internet. 06:02.130 --> 06:05.070 So you can right click and go to settings. 06:05.070 --> 06:12.510 You can click on the icon in here or you can go from the top left, go to the template virtual machine 06:12.510 --> 06:16.170 and click on the cube settings, not its settings. 06:16.710 --> 06:20.130 So we're going to enter the cube setting, the virtual machine setting. 06:20.130 --> 06:23.340 And what we want to do is modify the networking. 06:23.370 --> 06:30.390 As you can see, by default it's set to non and we want to set this to this net so that it gets connected 06:30.390 --> 06:31.560 to the Internet. 06:32.190 --> 06:34.200 We're going to click on okay. 06:34.530 --> 06:39.960 And now we're ready to go and install software on this virtual machine. 06:40.350 --> 06:42.420 So again, we're going to the top left. 06:42.420 --> 06:49.170 We're going to go to the virtual machine and we're going to click on the software in here to launch 06:49.170 --> 06:50.580 the software manager. 06:51.180 --> 06:56.820 Now, first of all, this will start the Fedora 30 template virtual machine, and then only when it 06:56.820 --> 06:59.250 starts, it will launch the software manager. 06:59.250 --> 07:03.570 So similar to starting any application within any virtual machine. 07:04.290 --> 07:09.390 So now you can look for the program that you want to install from the list here or you can click on 07:09.390 --> 07:11.130 the search and search for it. 07:11.130 --> 07:13.380 So I'm just going to search for office. 07:14.510 --> 07:17.970 And the program that I want to install is Lever Office Writer. 07:17.990 --> 07:22.310 So we're going to click on it and click on Install. 07:23.480 --> 07:29.090 So it's very intuitive and very similar to install and software on most operating systems. 07:29.840 --> 07:32.720 Now you want to give this some time depending on your machine. 07:32.720 --> 07:36.710 Sometimes, again, it seems like it's stuck at one stage, but it's not. 07:36.710 --> 07:37.490 It's loading. 07:37.520 --> 07:39.080 So just be patient with it. 07:39.080 --> 07:42.200 And once it's done, you'll have the software installed. 07:43.980 --> 07:44.370 Perfect. 07:44.370 --> 07:46.800 Now the installation is complete. 07:46.800 --> 07:54.000 So right now we have installed this software, the lever office writer on the Fedora 30 virtual machine. 07:54.300 --> 08:00.000 So I'm going to close myself to our manager and I don't want to use this virtual machine anymore because 08:00.000 --> 08:05.040 like I said, the we don't use the template virtual machines for our daily use. 08:05.040 --> 08:09.420 Therefore we're just going to go to my cubes and I'm going to shut it down. 08:09.960 --> 08:18.990 Now you'll notice we have a new icon in here beside all of the virtual machines that use the fedora 08:18.990 --> 08:20.310 as its template. 08:20.430 --> 08:26.430 And if we hover over this icon, you'll see that it's telling us that once our template is stopped, 08:26.430 --> 08:32.910 once we shut down the Fedora Machine, the changes that we made to the template will be reflected on 08:32.910 --> 08:37.890 these machines because these machines use the fedora as their template. 08:38.280 --> 08:44.490 Now I'm also going to go ahead and turn off my work computer so the software that I installed should 08:44.490 --> 08:50.520 be available in my work and in all of the other machines that use Fedora as a template. 08:50.910 --> 08:56.370 So let's go ahead and start my work and I'm just going to go to my file manager. 08:57.610 --> 09:03.550 And I'm going to go to my downloads because I've already downloaded Microsoft Word document in here 09:03.550 --> 09:04.640 just for testing. 09:04.660 --> 09:07.940 So let's right click this and open with labor. 09:07.960 --> 09:10.990 Office Writer As you can see, we have a new option in here. 09:10.990 --> 09:12.520 This wasn't available. 09:12.520 --> 09:16.480 This is only available because we installed office writer. 09:16.480 --> 09:22.780 And the only reason why it's available in work because work uses the fedora 30 as its template. 09:22.780 --> 09:28.270 And since we installed this in the template, it's going to be available to all virtual machines that 09:28.270 --> 09:33.250 are based on this template, such as the work virtual machine or the work domain. 09:33.580 --> 09:38.620 So if I click on this to load the program and I'll be able to read this document. 09:39.870 --> 09:43.320 Now, one last thing that I want to show you before we wrap this up. 09:43.650 --> 09:44.940 I'm going to close this. 09:44.940 --> 09:51.990 And if I go in here and go to my work, you can see that I have some of the programs that are installed 09:51.990 --> 09:57.920 in the work domain, in the work virtual machine such as the files, Firefox and my terminal. 09:57.930 --> 10:02.320 But I still don't see the Labor Office writer, which is what I just installed. 10:02.340 --> 10:08.190 So it will be really nice if I have it here and I'll be able to access it directly from here so that 10:08.190 --> 10:14.580 it will automatically start the work domain and then from there launch the office writer similar to 10:14.580 --> 10:16.800 what happens if I just click on Firefox? 10:17.400 --> 10:19.210 Now doing this is very simple. 10:19.230 --> 10:21.840 Again, we're going to go back to our cubes manager. 10:21.870 --> 10:25.770 We're going to click the machine that we want to modify, which is my work. 10:25.770 --> 10:29.430 In this example, we're going to click on its settings and here. 10:30.700 --> 10:37.540 And we're going to go to applications and this will list all of the applications available on this virtual 10:37.540 --> 10:38.230 machine. 10:38.770 --> 10:44.710 We're going to click on refresh applications first to get a list of all of the applications available. 10:45.070 --> 10:50.650 This will have to start the template in the background, as you can see, and it will automatically 10:50.650 --> 10:52.990 shut it down once the refresh is done. 10:53.680 --> 10:59.650 And then in here, in the left side, we have all of the programs installed on the work virtual machine. 10:59.890 --> 11:05.170 So we're going to look for the program that we want to add to the menu that we have in here. 11:05.980 --> 11:11.110 So I'm going to scroll down and you can see I have my labor office writer in here. 11:11.200 --> 11:17.200 So I'm just going to click on the right arrow and we have Labor Office added now in here. 11:17.560 --> 11:18.790 So I'm going to click on. 11:18.790 --> 11:19.630 Okay. 11:19.900 --> 11:26.920 And now if I go to my menu and go to work, you'll see that I have a new entry for the program that 11:26.920 --> 11:32.620 I picked and I can just simply click this from here to start Labor office whenever I want. 11:33.310 --> 11:37.390 So if the virtual machine is running, this will instantly start the program. 11:37.390 --> 11:43.570 If the virtual machine is off, it'll first start an instance of my work virtual machine, and then 11:43.570 --> 11:48.790 it will automatically launch the program that I selected, which is Labor Office in this case. 11:49.420 --> 11:50.870 So that's it for this lecture. 11:50.890 --> 11:57.850 Now you know how to install software in cubes and use it in the different domains so you can use this 11:57.850 --> 12:03.940 to install any program you want, not only lever office, whether you want to install pigeon or any 12:03.940 --> 12:09.220 other software that we used before or any other software that you're used to, you can follow the exact 12:09.220 --> 12:16.150 same steps to install it on cubes and then make it available to any domain or to any virtual machine 12:16.150 --> 12:18.310 within your cubes installation.