Comments by "Javier Flores" (@JJFlores197) on "NetworkChuck" channel.

  1. In the same concept as the IOT stuff, you can setup a guest network so that if you have guests over and don't want to give them your wifi password, you can create a new wifi just for guests (along with a new subnet/VLAN) and they will have no access to any of your devices on your main network.
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  2. VirtualBox isn't intended to be used for gaming purposes. You can try it, but it likely won't work well except for maybe older games.
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  3. pfsense runs on a computer. That's what is acting as the router. I don't know if you can install pfsense on a router itself, but I doubt it.
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  4. You can sort of think of a type 1 hypervisor as the OS. However, you have to keep in mind that this hypervisor isn't meant to be used as a regular OS. You don't interface directly with a type 1 hypervisor usually. You install the hypervisor on the server and use another PC to connect to the hypervisor (usually via web interface) to manage it.
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  5. The bare metal image is an ISO. In short, an ISO is a virtual disk image. Its intended to be used to install Kali Linux directly on a computer either by burning that ISO to a DVD or creating a bootable USB flash drive. This will still work for a virtual machine. On the other hand, the virtual machine option is a pre-built VM that you just import into Virtual Box. You don't need to go through the install process. You just download the pre-made VM, import it into VBox and that's it. Turn on the VM and the system is ready to use. Either will work fine.
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  6. The computers are connected to each other via a switch. When you send a ping from 1 PC to the other, the PC sends the entire IP packet, but the switch only understands MAC addresses. it doesn't matter since the switch only cares about the MAC addresses which it uses to deliver the frame to the correct device. The network stack of the computers allow it to receive the packet and then respond to the ping (assuming no firewall rules are in place preventing this).
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  7. Nope. The current state of the videos is far from complete. NWC is a good presenter, but he still has a very, very long way to go to finish the series. The videos are good if you want a high level overview of networking, but none of them go in-depth as they should to be called "CCNA". He hasn't even shown you how to configure a Cisco router or switch. I suggest watching Jeremy's IT lab and/or David Bombal. They may not be as "exciting" and "energetic" as NWC, but they are much more informative and complete.
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  8. That is correct.
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  9.  @wronguniverse_2930  Not usually. Occasionally, some websites (like email or other secure pages) may want extra verification when you try to log in, because you have a different public IP, but its not too common.
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  10. Macs don't have a BIOS interface. All computers have a BIOS/UEFI, but Apple doesn't give you an interface to change settings.
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  11. A pure router is only used for routing. It doesn't have any switching capabilities. Most typical home routers have a switch built in, but enterprise and business-level routers usually only have a few network ports (LAN and WAN and maybe some failover/aux ports). That's why they plug in a switch after the router.
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  12. Yeah apple doesn't give you a way to interface with the BIOS.
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  13. Hey sometimes you have to break stuff to learn how stuff works...
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  14. Not in the slightest. This series is far from complete. There are many topics he hasn't gone over or if he did, it was very brief. He hasn't even shown you how to configure a Cisco router and a switch. He's a good and enthusiastic presenter, but lacks a lot of important Cisco-spcific information. I would watch David Bombal or Jeremy's IT Lab. They may not be as exciting or energetic as NWC, but they are far more informative, and most importantly, complete. This series, in its current state, is ok if you want to have a high-level overview of general networking knowledge, but it is not even close to what you need to know for the actual certification.
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  15. I'm not 100% sure, but it looks like his site just links to these videos once you pay for it. Normally, it wouldn't be that bad of a deal, but his CCNA series is very far from complete. There is absolutely no way anyone can pass the CCNA with this series alone and no outside resources. Its not a bad video series, but there still a lot of information (and I do mean a lot) that he hasn't covered. He hasn't even shown you how to setup a Cisco router or switch. That's pretty important to know how to do if you're working on Cisco. So far, his videos seem to focus on general network knowledge. That's fine, but its not enough for the CCNA.
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  16. Try increasing the amount of space for the virtual hard disk. I'd go for at least 50 GB.
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  17.  @ortholmolla7781  I don't know if you realize it, but those are scam troll bots.
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  18. A virtual machine system like Proxmox or Hyper-V or VMware ESXi lets you run multiple guest systems simultaneously. If you were to install each of those systems directly, it would work, but you can only run one of those systems at a time.
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  19. This is done at the router level. You will need to create different networks for whichever subnets you want to create. I don't think most typical home routers let you do this, or if they can, it is very basic.
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  20. If you're following the rules, technically yes. You are still supposed to follow all licensing requirements for virtual machines. Unofficially, you can run W10 indefinitely w/o a product key.
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  21. They'll still use disk space, but the other resources are freed when the vm is shut down.
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  22. There are 2 types of hypervisors: Type 1 and Type 2 A type 1 hypervisor (like VMware ESXi, Hyper-V, etc) are what I suppose you're referring to as dedicated host systems. When you install ESXi, that is the operating system. You manage the ESXi host through its web interface (or command line interface if you need to), where you can create virtual machines, turn them on or off and other activities. A type 2 hypervisor is where the virtual machine program runs like another computer program on top of the host system. So in this case, VirtualBox is a type 2 hv since it requires a host system, like Windows, to run.
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  23. Either one is fine. The Installer one is the ISO file. This will be similar to what he shows in the video. The Virtual Machine file is a pre-built image that you just add to VirtualBox. Its all setup and ready to use.
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  24. There are viruses and malware that have been known to break out of virtual machines. They're quite rare, but they are out there. If you're going to be playing with fire, I strongly suggest learning bout how to keep your host and guest systems as isolated as possible. There also viruses that can detect if they're running in a VM and will not be activated, which can potentially give you false hope.
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  25. You will need to virtualize the cloned drive. This will create a virtual hard disk file which you can then attach to the VM. I use StarWind P2V to virtualize drive. There is also Microsoft Sysinternals Disk2vhd, but I had better luck with Starwind. No need to partition your hard drive. You just save your virtual hard disk files to the hard drive like any other file.
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  26. Each interface on a router and switch has its own MAC address. So when PC-1 sends a packet out to the internet, the packet first arrives at the router. At the L2 header, the source MAC is PC-1's MAC address and the destination MAC is the router's LAN interface MAC address. The router then sends this packet to its WAN interface where it changes the source MAC from PC-1 to its (the router's) LAN interface and the destination MAC to the router's WAN interface's MAC address.
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  27. Kali Linux has a lot of cyber-security oriented tools so you can use it to practice what you're learning. There are tools/scripts for wifi hacking, hacking in general, etc.
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  28.  @harismith497  The exact steps depend on your router. In general, there should be a section that let's you change the network-specific settings, including the router's IP address. You can change it to whatever you want, as long as you understand subnets. For your individual devices, that depends again on your router and devices. Most devices should have a network setting that let's you request a new IP address from the router. It may give it the same one or a different one.
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  29. I have not tried this: https://chromeready.com/4003/install-virtualbox-chromebook/ but this guide supposedly shows you how to install VirtualBox on ChromeOS. Just keep in mind that Chromebooks in general don't have very good hardware so you may not have a very good experience.
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  30. That's an interesting approach. I've never seen it be done like that. Usually, in the US a lot of coffee shops/restaurants/businesses offer free wifi. Some may offer free and slow wifi and also have the option to pay for a faster connection, but you pay within the captive portal itself via credit card.
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  31. I don't think VLANs inherently provide security, but it does help segment your network and make it easier to create firewall rules for different networks. For instance, you can have 2 networks: home network (for your personal devices) and a guest network/IoT network for guests or IoT devices. You can create firewall rules that prevent either network from talking to each other. So if you have a friend who brings in a potentially infected laptop (just for example) and he connects it to your guest network, it won't affect any of your devices on your private home network.
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  32. Its the same process. The main difference is that you have to change the virtual machine's install location inside of VBox settings.
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  33. How exactly do you think you can get connected to the internet without an ISP? Are you going to run a cable from your house all the way to the nearest internet exchange? We have ISPs because they connect us to the internet. They spend the big bucks to connect to other ISPs. The internet is essentially a very, very large collection of interconnected networks, hence the term internet. There isn't a single place you can just "plug in" and get internet.
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  34. Yes and no. By default, VBox creates a thin virtual hard disk file. That means that the file will only take up as much space as is currently being used. In other words, if you have a 20 GB virtual hard disk, but only have 5 GB used, the virtual hard disk file will be a 5 GB file. As you start using more storage on your virtual hard disk, the file size will increase.
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  35. What are you referring to? You want to change the background on what?
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  36. There's a channel called TotalSeminars with a video: Mike Meyers on: Touring the Network Server Room that should give you a general idea of large networks and how they are physically setup.
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  37. No. I believe they are technically layer 1 devices since a hub pretty much sends all data from its ports to every port. As such, it has no concept of any of the higher layers of the OSI model. I wouldn't really worry about hubs. They are practically useless in most applications nowadays.
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  38.  @tommythompson1286  You may need to give your VM more storage.
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  39. The default gateway is usually the router which is a host device.
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  40. He goes over that at 2:30
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  41. Make sure you attached the ISO file to the VM's virtual DVD drive. By default, I believe the virtual DVD drive is set as the first boot device. Once you do this, the VM should boot from the ISO file you added.
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  42.  @saidfrh  I would delete the vm that has the failed installation and create a new one. From there, you can adjust the size of the virtual had disk.
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  43. Chances are that the cable will work fine if you don't follow the standards. However, if you're making cables, its best to follow the set-standards as some network equipment may not work well or at all if the wires are in the wrong order. It can save a lot of headache down the line when troubleshooting.
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  44. I think you got it backwards. You put the ISP router in bridge mode so that your other router acts as the router. Anyways, there are some advantages to doing this, but it depends on how much time you're willing to learn and invest in this. With your own router, you can usually create custom networks and subnets and overall have more control over you networks compared to the ISP router. Whether or not its worth it really depends on you and your needs.
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  45. It will still take up disk space, but not CPU/RAM if the vm is off.
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  46. From what I've read, they don't seem to be great. A lot of employers don't really value the google IT certs compared to CompTIA's certs.
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  47. If you clone the VM, the clone will take up the same amount of space as the original one. You can't exactly "clone" RAM. If you have the clone VM running only, then that vm will use RAM, not the original one. If you have both VMs running, then yes, both will be using RAM.
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  48. You don't need any in particular. If your school offers them, take as many IT courses as you can. If not, its not the end of the world. A lot of us learned by playing around with computers at home. I don't know what your current skills are. If you don't know much about computers, start with the basics. Grab an old PC you may have laying around and take it apart completely. Learn the hardware and put it back together. It doesn't need to be anything fancy or even functional; bonus points if you can make it work again. Once you understand that, you can move onto things like software and go from there. As I'm sure you're aware, the IT industry is a very broad industry with many sub-fields. You don't absolutely have to start from here, but I think its important to at least have some working knowledge about how computers work since you will be primarily working with computers even if you're not necessarily repairing them.
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  49. If you know absolutely nothing about computers, I suggest taking a few courses at a local community college for basic computer knowledge. They typically go over the very basics of a computer, like how to turn it on, how to navigate the file explorer, where files are stored, etc. Or if you can't go the community college route, look into the CompTIA ITF+ certification. Its a very basic cert primarily aimed at people who aren't quite sure if they want to be in the IT field. Before you start familiarizing yourself with the ethical hacking stuff, you really need a solid foundation of general computer knowledge. You don't need to be an expert right off the bat, but having a solid understanding of how to use a computer is of great benefit.
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  50. I think you misunderstood the point. He's using it in the buzzword sense. Things that say "hack" usually get more attention
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