Hi, everyone. My name is Greg Williams, I'm a lecturer in the computer science department at the University of Colorado, Colorado Springs. I wanted to introduce myself for a few minutes and tell you a little bit about these courses that you're going to be taking and my passions in computers. My passion for computers really started back in the 80s where my parents say, change my dad's computer. It was running DOS at the time. I changed the time on it because he couldn't figure it out. So then in high school, I started taking some C programming classes. And then in college my undergrad, I got my information technology degree. And then I got my masters in engineering and information assurance, it's a computer science degree. My passions in computer security are really identifying malicious content and helping identify it faster. My thesis was on identifying external data breaches, looks are it, internal data breaches from external networks. The paper was actually called external detection for internal data breaches. That's what it was. Anyway, going back to working in security, I loved, I still do love playing video games. And, back in the early 2000s we would play, me and my friends would play, Battlefield 1942. And there was a desert siege mod that came out and I would rewrite the memory locations on the fly to turn the enemies to different colors so I could identify them easier. So, yes, I was a hacker back then. But that really started me into my computer security career because I was able to see that other people, like myself, had an advantage and how do I stop other people from gaining that advantage. So now, I still play video games all the time. I love playing first person shooters like Battlefield. Within the past week, I played Battlefield One, and Battlefield Four, and played Diablo, all kinds of different games. I do play games with my students occasionally so if you send me your gamer tag, after the course, that is, after you've completed it. Then we'll set up a chain or something like that anyway. So I've been the information security officer here at the university, and HIPAA security officer, but my passion now is being able to apply computer security into the systems that I manage. So being the director of operations which includes telecom, it includes all networking, it includes infrastructure for what we would call a medium size university, which is 13,000 students, gives me the opportunity to innovate again. We're doing some really cool things. So I'm going to take into the data center right now where we're going to just look over a few of the things that get me really excited about computer security and also system management. But before we do that, what I want you to understand is that everything that you're going to learn in these courses, if you're just taking the system management and security specialization, or if you're taking the computer security or practical computer security specialization, what I want you to understand, is that this is practical knowledge that I've had from years of experience. I live and breathe this stuff every day. You're going to walk into the data center here in a second and see that this stuff really does exist. This is really what I'm putting into practice, not just theory. My teams live and breathe this stuff too. So it's a combination of learning over time but also practicing. And I hope that you see that throughout these quests. Let's go take a look at the data center. This is our primary data center. We have a raised floor system here. Underneath the floor is 24 inches of space, what that does is that it amass and cool the air from the crack units behind me here, to be pushed down through the floor and cold air going up. What that does is that, it pushes the hot air up to the ceiling. The ceiling in this room is around 17 feet tall, but you can't tell because of the tiles. We have quite a few standalone servers, but let's take you into where we have a lot of rack mount units. This is one of our newer racks. Each one of the racks here contains almost half a million dollars worth by key equipment, very specialized hardware and software that goes into everything that we do here at the university. Systems like these, run in these, down here run our media department's servers and they store video on them. Standalone servers for random things. This is our SDN stack, software-defined networking. This is one of the really cool bleeding edge or cutting edge technologies, that is out on the market today. It's actually Cisco ACI. What it does, is that it works with virtualization and physical systems based on the software route packets back and forth and to micro-segmentation on the network. It's actually the core of our network, not which many universities have at the moment or really not many more organizations. Down at the bottom, we have some of our virtualization architecture. We have storage in this cabinet. Like I said in the previous couple of minutes ago, this is just our primary data center. We have four data centers on campus. Some have more equipment in them some have less. We also have 54 buildings on campus. Each one of them, look around like this. This is our networking row. Each one of these racks or each one of these red wires goes to a port somewhere in the building. Orange wires go directly to servers or other internal architecture. This is our core router. Each one of these in here go to a building. Each building on campus is dual connected meaning that if somebody cuts one of the fibers, the other one kicks in. And, here is all the connections to our buildings on campus. We have more standalone servers and network architecture in the back. And then even more, we can keep on going. But, what I want you to understand, out of the entire course, as you're thinking about these videos, and you're watching these lectures and doing the work, think about how you are implementing this technology or how you want to learn this technology for an organization. Feel free to email me, I'll be more than happy to take a look at whatever you have and help you out if I can. Keep in mind, I practice this stuff on a daily basis. This isn't just me talking theory. Most of the stuff that we talk about is from situations that we've had here on campus or lessons learned. So, I will see you in the next couple of weeks.