WEBVTT 0:00:07.580000 --> 0:00:12.380000 Hello and welcome to my course on Switching Security Features. 0:00:12.380000 --> 0:00:15.520000 My name is Keith Bogart and I will be your instructor for the duration 0:00:15.520000 --> 0:00:18.540000 of this course. Should you have any questions while you're going through 0:00:18.540000 --> 0:00:20.960000 these videos, please reach out to me. 0:00:20.960000 --> 0:00:25.500000 You can see my email address there, my Twitter handle and my LinkedIn 0:00:25.500000 --> 0:00:30.720000 information. So, what prerequisites do we have for this course? 0:00:30.720000 --> 0:00:34.060000 Not a lot. You certainly don't have to be a switching expert by any stretch 0:00:34.060000 --> 0:00:37.580000 of the imagination to understand the concepts I'm going to cover here. 0:00:37.580000 --> 0:00:40.500000 But there are some basic things you do need to know. 0:00:40.500000 --> 0:00:44.180000 Like number one, you need to understand how switches typically process 0:00:44.180000 --> 0:00:45.880000 Ethernet frames. 0:00:45.880000 --> 0:00:49.660000 So if I use that word Ethernet frame and you're like, huh, what's that? 0:00:49.660000 --> 0:00:51.100000 Okay, that's a bad thing. 0:00:51.100000 --> 0:00:52.640000 That means you're probably going to have a hard time with this. 0:00:52.640000 --> 0:00:55.520000 So, you should be able to visualize what an Ethernet frame looks like, 0:00:55.520000 --> 0:01:00.380000 visualize how a switch will process an Ethernet frame as it goes through 0:01:00.380000 --> 0:01:04.520000 it. In other words, the concepts of flooding, forwarding and discarding, 0:01:04.520000 --> 0:01:07.820000 which are the three actions that a switch can do, are you familiar with 0:01:07.820000 --> 0:01:10.500000 that? Do you know what that means when I use those terms? 0:01:10.500000 --> 0:01:14.940000 Also, you should be able to explain the Ethernet frame structure. 0:01:14.940000 --> 0:01:20.200000 So as I'm using terms like the Ethernet type code, the source MAC address, 0:01:20.200000 --> 0:01:23.460000 the destination MAC address, you should be able to visualize what these 0:01:23.460000 --> 0:01:27.900000 look like and how an Ethernet frame is put together. 0:01:27.900000 --> 0:01:33.020000 And then lastly, you should understand the role of DHCP and ARP in a network. 0:01:33.020000 --> 0:01:36.880000 These security features are explicitly going to refer to and deal with 0:01:36.880000 --> 0:01:39.500000 DHCP and ARP packets. 0:01:39.500000 --> 0:01:43.200000 And clearly, if you don't know what those protocols are or what purpose 0:01:43.200000 --> 0:01:46.760000 they were designed to solve, you would have a hard time conceptualizing 0:01:46.760000 --> 0:01:49.220000 why these security features will help you. 0:01:49.220000 --> 0:01:53.000000 So let's take a look at the objectives of my course. 0:01:53.000000 --> 0:01:58.460000 So my course is to help you understand three primary switch security mechanisms 0:01:58.460000 --> 0:02:05.240000 you can have on a switch to better control what type of data is allowed 0:02:05.240000 --> 0:02:08.220000 through and onto your switch network. 0:02:08.220000 --> 0:02:10.300000 I'm going to talk about port security. 0:02:10.300000 --> 0:02:12.720000 I'm going to talk about DHCP snooping. 0:02:12.720000 --> 0:02:15.500000 And we're going to talk about dynamic ARP inspection. 0:02:15.500000 --> 0:02:18.200000 Now all three of those, I'm going to talk about the theory. 0:02:18.200000 --> 0:02:20.260000 I'm going to talk about how to configure it. 0:02:20.260000 --> 0:02:22.600000 And I'm going to do some demonstration on all three of those so you can 0:02:22.600000 --> 0:02:25.400000 see actually what it looks like in a live lab environment. 0:02:25.400000 --> 0:02:28.420000 And then a fourth security feature, we're not really going to go into 0:02:28.420000 --> 0:02:32.620000 the configuration of it, but we're going to talk about AAA, authentication, 0:02:32.620000 --> 0:02:34.300000 authorization, and accounting. 0:02:34.300000 --> 0:02:38.000000 So by the time we're done with that section, you'll know what is AAA, 0:02:38.000000 --> 0:02:42.220000 what are the three components of it, what protocols are used in AAA like 0:02:42.220000 --> 0:02:44.780000 TACACs and RADIUS and how are they different from each other. 0:02:44.780000 --> 0:02:49.620000 And I will show you a quick screenshot of a AAA configuration just so 0:02:49.620000 --> 0:02:53.400000 you can parse through it and understand sort of what the commands do. 0:02:53.400000 --> 0:02:54.900000 So that concludes this. 0:02:54.900000 --> 0:02:56.040000 So welcome to this course. 0:02:56.040000 --> 0:02:57.980000 And I look forward to teaching you these topics.