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    • Assigning IPv4 Addresses - CompTIA Network+ N10-007 Prof. Messer
      Training • youtube networking comptia prof messer certification video training it career it training network+ ipv4 • • steve  

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    • Calculating IPv4 Subnets and Hosts - CompTIA Network+ N10-007 Prof. Messer
      Training • youtube networking comptia prof messer certification video training it career it training network+ ipv4 subnet subnetting • • steve  

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    • IPv4 Subnet Masks - CompTIA Network+ N10-007 Prof. Messer
      Training • youtube networking comptia prof messer certification video training it career it training network+ ipv4 subnet subnetting • • steve  

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      @scottalanmiller exactly what I was looking for!
    • IPv4 Addresses - CompTIA Network+ N10-007 Prof Messer
      Training • youtube networking comptia prof messer certification video training it career it training network+ ipv4 • • steve  

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      That said, there are 3 networks designed per the RFC to never be routed across the public internet. 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 You design your local networks to use addresses within one of these ranges. I'm sure there is a video for this.
    • Prioritizing Traffic - CompTIA Network+ N10-007 Prof Messer
      Training • youtube networking comptia prof messer video training it career it training network+ ipv4 ipv6 qos • • steve  

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      It only kicks in when a pipe has hit saturation. Even if you're at 99% bandwidth, there would be no prioritizing because the packets would just flow in the order they are received. So the answer is, it totally depends if your pipe is ever saturated.
    • IPv4 and IPv6 Addressing - CompTIA Network+ N10-007 Prof Messer
      Training • youtube networking comptia prof messer certification video training it career it training network+ ipv4 ipv6 • • steve  

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      @mary said in IPv4 and IPv6 Addressing - CompTIA Network+ N10-007 Prof Messer: If you are using :: to abbreviate sets of 2 or more zeros, how can you tell how many there are? In the example he condensed 3 sets down to ::? IPv6 always has 8 sets of 4 numbers for addressing. So it should be easy to figure out with a little math. IE: FABD:4976:5AC3:: would mean that 5 more sets of 4 zeros is tacked on FABD:4976:5AC3:0000:0000:0000:0000:0000
    • Common Ports - CompTIA Network+ N10-007 Prof Messer
      Training • youtube networking comptia prof messer certification video training it career it training network+ ipv4 ipv6 tcp upd tcpip • • steve  

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      @mary said in Common Ports - CompTIA Network+ N10-007 Prof Messer: @scottalanmiller makes sense. He did say outgoing to a DNS server. Thanks UDP itself has no connections, but that doesn't mean that a protocol running on top of it can't have its own connections. TCP makes connections for you, UDP requires you to do it yourself (if you want them.) So important to know that UDP itself does one thing, but can be used as a tool to make other things.
    • Introduction to IP - CompTIA Network+ N10-007 Prof Messer
      Training • youtube networking comptia prof messer video training it career it training network+ ipv4 ipv6 • • steve  

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      @FiyaFly Now I got the joke xD
    • Internet Connection Types - CompTIA A+ 220-1001 Prof Messer
      IT Careers • youtube networking comptia prof messer video training a+ ipv4 • • steve  

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      @scottalanmiller said in Internet Connection Types - CompTIA A+ 220-1001 Prof Messer: Satellites were launched last week @scottalanmiller said in Internet Connection Types - CompTIA A+ 220-1001 Prof Messer: Satellites were launched last week that should be a total global game changer. Those 60 are not going to do that. They do not have the point to point lasers for relay. These are all still engineering tests that have to relay all communications through ground stations.
    • Using IP Addresses - CompTIA A+ 220-1001 Prof Messer
      IT Careers • youtube networking comptia prof messer video training it career it training a+ ipv4 • • steve  

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      @scottalanmiller said in Using IP Addresses - CompTIA A+ 220-1001 Prof Messer: @connorsoliver said in Using IP Addresses - CompTIA A+ 220-1001 Prof Messer: When using an SSL VPN, if the VPN concentrator decrypts the data being sent, wouldn't it be possible for someone to capture the data and also decrypt it? Possible, sure. But very, very hard. The VPN concentrator has the keys, someone intercepting the traffic presumably does not. The point of VPN encryption is to make it so hard to decrypt the data that you don't care if they see it. It's about making something safe enough that we assume we will send it in the open and not worry. So we assume that people capture that data constantly - but we have made it so hard to use, that they can't do it. We more than assume that - we pretty much know the NSA is doing that after the Snowden leaks.
    • Assigning IP Addresses - CompTIA A+ 220-1001 Prof Messer
      IT Careers • youtube networking comptia prof messer certification video training it career it training a+ ipv4 • • steve  

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      @scottalanmiller said in Assigning IP Addresses - CompTIA A+ 220-1001 Prof Messer: @connorsoliver said in Assigning IP Addresses - CompTIA A+ 220-1001 Prof Messer: How would you know what what IP dresses were available if you weren't using a DHCP server and you were manually entering the IP address and such? They are supplied to you by whomever you bought them from. There is no situation where there isn't someone providing them to you. Unless he was talking about the LAN side. In that case it is the Network Engineer who decides the scope of the LAN and chooses an appropriate sized CIDR and private IP address to use.
    • An Overview of IPv4 and IPv6 - CompTIA A+ 220-1001 Prof Messer
      IT Careers • networking comptia prof messer certification it career it training a+ ipv4 internet ipv6 • • steve  

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      But realistically, if you started working in IT full time today, and did normal small business IT work all the time, you might not interact with IPv6 at all for a few years yet.
    • Force apt-get to use IPv4 or IPv6
      IT Discussion • ipv4 ipv6 ubuntu 17.10 apt-get • • black3dynamite  

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    • CentOS can be stupid as well.
      IT Discussion • centos ipv4 ipv6 bugs • • travisdh1  

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      @coliver said in CentOS can be stupid as well.: I find a good yum clean all tends to fix these types of errors. Yep. I mostly just wanted to point out that even the OS myself and @scottalanmiller are always recommending can do dumb things from time to time as well.
    • Began migrating a client from Pertino to ZeroTier today
      IT Discussion • zerotier pertino migration ipv4 subnet cidr • • JaredBusch  

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      A

      One wrinkle you should be aware of (this needs to be fixed in our web UI!) -- if you change the ZT-managed range from /24 to /23 or /22 you will also need to change it on all the devices. We should add a feature to renumber automatically since right now it's tedious.
    • Expanding the IP range on an existing network
      IT Discussion • networking ipv4 subnet network routing • • JaredBusch  

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      @Dashrender said: @JaredBusch said: Correct, you would want to change your servers first. so that devices in the new range can get answers back. In my case, printers are always DHCP reservations. So as soon as I update the DHCP scope that will come down. I've seen you post that before - I think I need to adapt that. Everything is DHCP reservations except the core server infrastructure, HOST, DC, DHCP, and the Router. Exverything else is DHCP reservations, Printers, secondary servers, PBX, everything. Desktops and phones, just normal DHCP.