1 1 00:00:00,610 --> 00:00:02,630 IoT considerations. 2 2 00:00:02,630 --> 00:00:03,570 In this lesson, 3 3 00:00:03,570 --> 00:00:05,360 we're going to discuss how you can best secure 4 4 00:00:05,360 --> 00:00:06,900 your Internet of Things devices, 5 5 00:00:06,900 --> 00:00:08,770 when you connect them to your network. 6 6 00:00:08,770 --> 00:00:10,160 When it comes to IoT, 7 7 00:00:10,160 --> 00:00:12,190 I believe there are many things you should be doing 8 8 00:00:12,190 --> 00:00:15,140 within your organization to best protect yourself. 9 9 00:00:15,140 --> 00:00:17,840 First, you need to understand your endpoints. 10 10 00:00:17,840 --> 00:00:21,040 Each new IoT device brings with it, new vulnerabilities. 11 11 00:00:21,040 --> 00:00:22,710 So you need to understand your endpoints 12 12 00:00:22,710 --> 00:00:24,630 and what their security posture is. 13 13 00:00:24,630 --> 00:00:26,070 If you're adding a new wireless camera 14 14 00:00:26,070 --> 00:00:27,600 or a new smart thermostat, 15 15 00:00:27,600 --> 00:00:29,630 each one of those brings different vulnerabilities 16 16 00:00:29,630 --> 00:00:31,649 that you need to consider before connecting those devices 17 17 00:00:31,649 --> 00:00:33,110 to your network. 18 18 00:00:33,110 --> 00:00:36,170 Second track and manage your IoT devices. 19 19 00:00:36,170 --> 00:00:38,594 You need to be careful and don't just let anyone connect any 20 20 00:00:38,594 --> 00:00:40,720 new IoT device to your network. 21 21 00:00:40,720 --> 00:00:41,553 Instead, 22 22 00:00:41,553 --> 00:00:43,660 you need to ensure you have a good configuration management 23 23 00:00:43,660 --> 00:00:46,650 for your network and follow the proper processes to test, 24 24 00:00:46,650 --> 00:00:49,040 install, and operate these IoT devices, 25 25 00:00:49,040 --> 00:00:50,350 when you connect them. 26 26 00:00:50,350 --> 00:00:52,510 Third, patch vulnerabilities. 27 27 00:00:52,510 --> 00:00:55,420 IoT devices can be extremely insecure. 28 28 00:00:55,420 --> 00:00:56,700 If you're deploying a device, 29 29 00:00:56,700 --> 00:00:58,420 you need to understand the vulnerabilities 30 30 00:00:58,420 --> 00:01:00,340 and patch them the best you can. 31 31 00:01:00,340 --> 00:01:01,173 After that, 32 32 00:01:01,173 --> 00:01:03,480 you're still going to be left with some residual risk here, 33 33 00:01:03,480 --> 00:01:06,440 but there may not be a bug fix or security patch available 34 34 00:01:06,440 --> 00:01:08,010 for that IoT device. 35 35 00:01:08,010 --> 00:01:09,110 If that's the case, 36 36 00:01:09,110 --> 00:01:10,680 you need to conduct some risk management 37 37 00:01:10,680 --> 00:01:12,610 and determine if you're willing to accept the risk, 38 38 00:01:12,610 --> 00:01:15,020 or if you need to put additional mitigation in place, 39 39 00:01:15,020 --> 00:01:17,110 like putting them on a separate VLAN. 40 40 00:01:17,110 --> 00:01:19,710 Fourth, conduct test and evaluation. 41 41 00:01:19,710 --> 00:01:22,240 Before you connect any IoT device to your network, 42 42 00:01:22,240 --> 00:01:24,240 you should fully test it and evaluate it, 43 43 00:01:24,240 --> 00:01:26,410 using penetration testing techniques. 44 44 00:01:26,410 --> 00:01:29,060 It is not enough to trust your manufacturer when they say 45 45 00:01:29,060 --> 00:01:31,720 their devices are secure because many of these devices 46 46 00:01:31,720 --> 00:01:32,850 are not. 47 47 00:01:32,850 --> 00:01:35,160 Therefore always conduct your own assessments 48 48 00:01:35,160 --> 00:01:37,910 of their security by conducting it on a test network 49 49 00:01:37,910 --> 00:01:40,930 or lab before you attach it to your production network. 50 50 00:01:40,930 --> 00:01:43,110 Fifth, change default credentials. 51 51 00:01:43,110 --> 00:01:44,560 Just like network devices, 52 52 00:01:44,560 --> 00:01:47,510 each IoT device has a default username and password 53 53 00:01:47,510 --> 00:01:49,760 that allows you to connect to it and configure it. 54 54 00:01:49,760 --> 00:01:52,770 These default credentials present a huge vulnerability. 55 55 00:01:52,770 --> 00:01:55,400 So they have to be changed before you allow the IoT device 56 56 00:01:55,400 --> 00:01:57,720 to go into production on your network. 57 57 00:01:57,720 --> 00:02:00,230 Sixth, using encryption protocols. 58 58 00:02:00,230 --> 00:02:02,660 IoT devices are inherently insecure. 59 59 00:02:02,660 --> 00:02:05,480 So it's important that you utilize encryption protocols 60 60 00:02:05,480 --> 00:02:08,290 to the maximum extent possible to better secure the data 61 61 00:02:08,290 --> 00:02:11,550 being sent and received by these IoT devices. 62 62 00:02:11,550 --> 00:02:14,210 Seventh, segment IoT devices. 63 63 00:02:14,210 --> 00:02:16,310 The Internet of Things devices should be placed 64 64 00:02:16,310 --> 00:02:18,540 in their own VLAN and their own sub-net 65 65 00:02:18,540 --> 00:02:19,610 to ensure they don't interfere 66 66 00:02:19,610 --> 00:02:21,430 with the rest of your production network. 67 67 00:02:21,430 --> 00:02:22,530 If you can afford it, 68 68 00:02:22,530 --> 00:02:25,280 you may even want to have a separate IoT only network 69 69 00:02:25,280 --> 00:02:27,640 to provide physical isolation, as well. 70 70 00:02:27,640 --> 00:02:28,570 As you can see, 71 71 00:02:28,570 --> 00:02:30,140 there are lots of different considerations 72 72 00:02:30,140 --> 00:02:31,720 that you need to think about when it comes 73 73 00:02:31,720 --> 00:02:34,620 to connecting Internet of Things, devices to your network. 74 74 00:02:35,491 --> 00:02:37,785 (dramatic music)