1 00:00:01,180 --> 00:00:01,690 Okay, guys. 2 00:00:01,690 --> 00:00:08,800 So in all of my courses, I intend for the participants that they easily make hands on practice on their 3 00:00:08,800 --> 00:00:09,640 own computers. 4 00:00:09,640 --> 00:00:15,850 So to achieve this purpose in network layer attacks, we're going to use a network emulator. 5 00:00:16,990 --> 00:00:22,300 With his famous name Gns3 or Graphical Network Simulator three. 6 00:00:22,330 --> 00:00:24,340 It's a network software emulator. 7 00:00:24,340 --> 00:00:30,520 It allows the combination of virtual and real devices used to simulate complex networks. 8 00:00:31,150 --> 00:00:35,140 So we'll see how to set one up and use three throughout the course. 9 00:00:35,140 --> 00:00:39,410 However, I do have to say that it's not an easy to use tool. 10 00:00:39,430 --> 00:00:45,550 I'll try to keep it as simple as possible for you, but just stay with me and you'll get it too. 11 00:00:45,850 --> 00:00:50,800 Anyway, if you don't want to deal with the S three, you can skip this section, even though I wouldn't 12 00:00:50,800 --> 00:00:51,850 recommend it. 13 00:00:52,060 --> 00:00:55,030 You'd still be able to make the most of the course. 14 00:00:55,030 --> 00:00:59,650 But like I'm saying, stick with me and I think you'll get it to. 15 00:01:02,750 --> 00:01:07,770 So now let's download and install the Gns3 tool on our host machines. 16 00:01:07,790 --> 00:01:12,380 Since my host system is a macbook, I'll show the installation in Mac OS. 17 00:01:12,740 --> 00:01:17,960 The installation steps are similar in other operating systems, so don't worry, you won't face any 18 00:01:17,960 --> 00:01:18,680 difficulties. 19 00:01:18,680 --> 00:01:22,970 If you do, just let me know and we will go through this step by step. 20 00:01:25,300 --> 00:01:25,720 All right. 21 00:01:25,720 --> 00:01:30,970 So open a browser in your host machine and go to 3.com. 22 00:01:35,720 --> 00:01:37,370 Click Free download. 23 00:01:38,150 --> 00:01:43,190 An account is required to download Gns3 software, so create an account. 24 00:01:43,460 --> 00:01:46,160 You can use your genuine email address. 25 00:01:46,160 --> 00:01:47,240 It's no problem. 26 00:01:47,480 --> 00:01:52,610 Since I already have an account, I'll use a your email address at this time. 27 00:01:53,860 --> 00:01:55,720 So assign a password. 28 00:01:55,720 --> 00:01:56,920 Select a country. 29 00:01:58,560 --> 00:02:00,330 I'll use it for training purposes. 30 00:02:01,290 --> 00:02:01,810 Okay. 31 00:02:01,830 --> 00:02:03,810 Create account and continue. 32 00:02:04,680 --> 00:02:07,470 Select the appropriate install file to download. 33 00:02:11,090 --> 00:02:14,150 My host machine is a mac, so I'll choose Mac. 34 00:02:17,300 --> 00:02:19,760 Download finishes in a couple of seconds. 35 00:02:20,000 --> 00:02:22,910 I mean, if you've got the same bandwidth as I do. 36 00:02:31,360 --> 00:02:35,530 Now select the installation file and double click to start the installation. 37 00:02:40,610 --> 00:02:45,950 I'll just drag the icon and drop it onto the applications folder and that's about it. 38 00:02:46,310 --> 00:02:48,970 So I'm ready to use Gns3. 39 00:02:49,040 --> 00:02:55,730 Now I can go to the applications window and click Gns3 to start it up. 40 00:02:56,520 --> 00:03:02,070 Okay, So in Mac, the files from a developer, which is not identified by Apple, are not allowed to 41 00:03:02,070 --> 00:03:02,640 run. 42 00:03:03,940 --> 00:03:05,020 To GEtrillionID of this. 43 00:03:05,020 --> 00:03:12,730 I'll just go to system preferences, select security and privacy, and you'll see the three dot app 44 00:03:12,730 --> 00:03:16,960 was blocked message Click the padlock icon at the bottom left corner. 45 00:03:16,960 --> 00:03:20,200 Enter your password to allow the changes and click open. 46 00:03:20,200 --> 00:03:24,490 Anyway, right there next to the three was blocked message. 47 00:03:25,550 --> 00:03:29,810 Click open and three starts.