1 00:00:00,210 --> 00:00:05,550 In this video I'm going to show you how to use Python to capture packets of the wire. 2 00:00:05,550 --> 00:00:11,490 We're going to use Python scripts so that we can programmatically run wire shock to capture packets 3 00:00:11,490 --> 00:00:16,590 of the wire and then display something in this genus free topology. 4 00:00:16,590 --> 00:00:19,970 I have an a boon to host an ether Switch switch. 5 00:00:20,010 --> 00:00:24,050 That's the bolting switch in genus 3 at Cisco. 6 00:00:24,060 --> 00:00:31,140 IOW switch and a Cisco IOW router the road is running multiple routing protocols so we should be able 7 00:00:31,140 --> 00:00:37,890 to capture SPF messages and EAI GOP messages on this happened to host the switch is going to be generating 8 00:00:37,890 --> 00:00:43,390 multiple messages such as DTP CTP SDP. 9 00:00:43,560 --> 00:00:46,560 So those once again should be captured by the soon to host. 10 00:00:47,400 --> 00:00:56,520 So again what we're going to do is run why a shock on the boon to host but specifically t shock and 11 00:00:56,940 --> 00:01:04,960 an application called Pi shock which allows us to leverage t shock and interact with t shock using python. 12 00:01:04,980 --> 00:01:08,340 Now there many ways to do this but this is a very simple way to get started. 13 00:01:08,910 --> 00:01:15,000 So again I'm going to show you how to use Python to programmatically manipulate t shock to capture packets 14 00:01:15,030 --> 00:01:17,470 and display information to us. 15 00:01:17,520 --> 00:01:23,700 Not cloud gives us internet access so this a to host is connected to the Internet because I want to 16 00:01:23,700 --> 00:01:29,970 show you how to download applications from the Internet. 17 00:01:30,110 --> 00:01:37,790 So as an example I can ping Google from the sibling to host it received an IP address from the Nat cloud. 18 00:01:38,070 --> 00:01:48,350 So again paying say Google dot com that ping succeeds because we have Internet connectivity from the 19 00:01:48,370 --> 00:01:55,270 boon to host through the switch via the Net cloud on to my physical network and onto the Internet 20 00:01:58,450 --> 00:01:58,750 okay. 21 00:01:58,760 --> 00:02:04,910 So the first thing we want to do is install t shock before doing that. 22 00:02:04,910 --> 00:02:12,110 I'm going to update you put two references it's recommended that you update your references before installing 23 00:02:12,110 --> 00:02:18,520 software making sure that the references are good that you have the most up to date information. 24 00:02:18,590 --> 00:02:27,750 So my Ubuntu references have been updated so I'm going to use the command apt get install t shock. 25 00:02:27,770 --> 00:02:33,020 Now this is once again an a bunch to host so I'm going to be using a book to commands. 26 00:02:33,020 --> 00:02:41,850 In this example I'm going to specify yes to install the software and that'll essentially download t 27 00:02:41,850 --> 00:02:47,280 shock from the Internet and install it on my computer. 28 00:02:47,280 --> 00:02:53,970 I'm going to allow non super users to capture packets even though that's not exactly necessary here. 29 00:02:53,970 --> 00:03:01,290 I'm running as root on the spoon to client so the commands we've run are apt get install t shock and 30 00:03:01,290 --> 00:03:04,650 before that I used app to get update. 31 00:03:04,650 --> 00:03:07,520 Now I'm using an a boon to host here. 32 00:03:07,650 --> 00:03:11,460 Python 3 top 5 is ready installed. 33 00:03:11,460 --> 00:03:18,420 You could use apt get install Python and specify a python version to install so I could use commands 34 00:03:18,420 --> 00:03:27,730 such as apt get install Python 3 top 5 but notice I've already got Python 3 top 5 installed so I've 35 00:03:27,730 --> 00:03:29,690 already got Python installed. 36 00:03:29,710 --> 00:03:32,680 The next thing to install is Pip 3. 37 00:03:32,680 --> 00:03:42,820 Now what I'm going to do is install Pip and in this case I want to get Python 3 pup I'm going to be 38 00:03:42,820 --> 00:03:44,160 using Python 3. 39 00:03:44,170 --> 00:03:50,770 It's recommended today that you use Python 3 Python 2 is going to be end of life very soon. 40 00:03:50,830 --> 00:03:59,230 So we want to use Python 3 rather than Python 2 and Pi shock runs with Python 3. 41 00:03:59,230 --> 00:04:05,680 You have to use a legacy version of Pi shock if you want to use Python 2.0 7. 42 00:04:05,820 --> 00:04:11,820 It's all we're doing here once again is connecting to the Internet and installing Pip. 43 00:04:11,970 --> 00:04:19,380 So again that's the command we used up get install Python 3 Pip I'll add all these commands below this 44 00:04:19,440 --> 00:04:24,810 video so you can follow the commands if you like. 45 00:04:25,500 --> 00:04:32,200 Okay Pip three's installed so now I can use the command Pip 3 install pi shock. 46 00:04:32,550 --> 00:04:44,700 This will install pi shock on my computer supply shock is now installed and what I could do as an example 47 00:04:44,700 --> 00:04:52,080 is run ti shock and notice t shock is now capturing packets I can see you know SPF packet I can see 48 00:04:52,080 --> 00:05:00,750 spanning tree I can see a GOP and so forth so I've been able to successfully run T shock and capture 49 00:05:00,750 --> 00:05:08,850 packets pi shock doesn't run here we're going to call pi shock from within a python script or directly 50 00:05:08,850 --> 00:05:09,870 from within Python.