@scottalanmiller exactly what I was looking for!

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.

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.

@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

@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.

@FiyaFly Now I got the joke xD

@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.

@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.

Cool very interesting!

@brianwinkelmann said in An Overview of IPv4 and IPv6 - CompTIA A+ 220-1001 Prof Messer: So for now we don't use IPv6 on local network areas right? Maybe in the future? Some people do, but not many. Mostly people only move to it when they want public IP addresses. IPv4 works really well for internal addressing so while you are free to use whatever, most people (and companies) stick to IPv4 because it's well known, understood, and supported by any equipment that you have.

@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.

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.

@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.