CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 7

50. Resource Records Now within those zones, as I said before, we have what’s called resource records. The resource records have different types because, as I said, some might be hosts, some might be aliases, mail exchanges, all those types of things. And they often are configured by a couple of letters, a little acronym,… Read More »

CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 6

44. Demo – Viewing Daemon Startup Options All right, so we’re going to talk about this Internet super daemon and we’re going to take a look at where that is set up, at least on Debian. Remember, it’s different in different versions. If you are running Red Hat, this would be the Xin ETD config… Read More »

CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 5

39. Demo – Installing and Configuring DHCP Server Services All right, we are going to talk about installing and configuring DHCP services in case you would like to have your system be the DHCP server. So I just minimized my console window. I have to actually install that particular package. So we’re going to make… Read More »

CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 4

31. Topic B: Network Services So now we’re going to talk about network services. These are going to be things that help make the connectivity on the network a lot easier for us or the communications a lot easier for us. So we’re going to talk about things like DNS and DHCP and how they… Read More »

CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 3

20. Character Based Names Part1 Now, most every system server service has some sort of character based names. That’s because it’s easy for us. We use names. All we have to do is find a way to map those names to the actual addresses. And there’s a number of ways of doing that. One is… Read More »

CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 2

14. Addressing All right, how do we communicate? Well, we talked about the protocols like TCP or UDP, and we addressed these communications to your addresses at two layers. One was layer three, the network address, which I called your network, your subnet, your broadcast domain. And once we got to that location, then your… Read More »

CompTIA Linux+ XK0-005 – Unit 09 – Networking Part 1

1. Networking All right, in this section we’re going to talk about networking. Now the goal here is to give you a good overview of networking. Remember, this is something that allows all different devices to be able to communicate to each other regardless of platform linux, Unix, Windows, Mac, regardless of type of device,… Read More »

CompTIA CYSA+ CS0-002 – Mitigate Software Vulnerabilities and Attacks Part 4

5. Design Vulnerabilities (OBJ 1.7) Design vulnerabilities. In this lesson we’re going to talk about some software design vulnerabilities and what are some things you can do to overcome them. Now, when it comes to vulnerabilities, vulnerabilities often arise from the general design of your software code. And so if you do bad software code… Read More »

CompTIA CYSA+ CS0-002 – Mitigate Software Vulnerabilities and Attacks Part 3

3. Race Conditions (OBJ 1.7) Race conditions. In this lesson we’re going to talk about race conditions and the vulnerabilities associated with them. Now, what exactly is a race condition? Well, a race condition is a software vulnerability that occurs when the resulting outcome from execution processes is directly dependent on the order and timing… Read More »

CompTIA CYSA+ CS0-002 – Mitigate Software Vulnerabilities and Attacks Part 2

2. Overflow Attacks (OBJ 1.7) Overflow attacks. In this lesson, we’re going to talk about the three types of overflow attacks. This includes buffer overflows, heap overflows, and integer overflows. And as we go through, I’m going to explain a little bit about each one. Now, when I talk about a buffer overflow, this is… Read More »