Public vs Private IP Address
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- Опубликовано: 6 фев 2022
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What are the differences between public and private IP addresses? Public IP addresses are registered on the internet. It’s what gives you access to the world wide web. Private IP addresses are not publicly registered on the internet. So you can’t access the internet using a private IP address.
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man a year ago I started watching your vids because we were just starting a module on Internet and stuff (TCP/IP, OSI, etc) and I was confused on a lot of stuff about NAT and MAC addresses
and now 2 months away from my uni entrance exams, I come back to revisit this topic for revision and I find out you're posting all these new vids on networks and stuff, hallelujah 😼
I recently hosted a Minecraft server and I have a problem which is that it uses the private ip so only players connected to the same network can join
I want to switch it to be hosting the server on my public IP address so anyone from anywhere can join the server.
Can you guys help me with that?
How does VPNS work
Also If we run out of public IPs wouldnt we have to add another private IP for IP location so Ur town has an IP then that IP has ur IP identity which goes to you and then that IP goes to ur device?
😮
Whoever you are behind this channel. I really salute for your efforts and knowledge you put creating these to the point tutorials.
You always make it so simple and exactly to the point what most people stuck with at and searching for.
Thanks a lot
So nice of you
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i echo with you
True.
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Totally agree with the opinion, especially for such a completely fresh one in networking as I am, the materials explained here are just brilliant, wish you prosperous development👍
Absolutely 👍
I will be taking my A+ soon, any advice?
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if you were my teacher i would probably be CEO of Yahoo
Finally a simple video that explains this in simple words. I've been looking for this for 10 years.
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A few points. Some ISPs hand out private addresses, which mean customers are already behind NAT and so cannot connect to their own network from elsewhere. NAT also breaks some protocols. Also, address classes are obsolete, replaced with classless addresses, where a base address and subnet mask are specified.
BTW, according to Vint Cerf, the guy who invented this, 32 bit addresses were only intended to be used for proof of concept, with the final version having a much larger address space. Unfortunately, IPv4 escaped, leaving the world trying to get by with only 32 bits addresses.
Primary problem of IPv4 in the begining were classes* - and therefor wasting of resources. Unfortunatelly there is the same situation with IPv6 today - every single device should recieve /64 address block (for what?). So it's still unnecessary wasting of resources.
Classes are obsolete for almost 30 years, but it was very bad start.
@@remetremet In the beginning there were no classes. The classes were created to make more networks, of varying sizes, available. Originally, it was just 256 of what became class A networks. Later, address classes were deprecated in favour of classless addresses with a subnet mask. Look up Classless Inter-Domain Routing for more info.
i wish i can understand ~~~~~
@@remetremet One other thing about that "waste of resources". While the idea was it would be impossible to run out, another benefit is security. With the address space so sparsely populated, it's virtually impossible to scan for targets to attack. That/64 block has as many addresses as the entire IPv4 address range squared! To give an idea of how big the IPv6 address space is, there are enough addresses to give every person on earth over 4000 /48s. A /48 contains 65536 /64s. And this is with only 1/8 of the address space assigned to global addresses.
@@dannylck1 What is it you don't understand?
From someone that had little to no knowledge regarding the topic, this has been rather educating. Thank you!
This is the very first time that I will leave a RUclips comment. Without a doubt, I have never subscribed to a better channel than this one. Each videos provide an accurate and easily understood explanation. I sincerely appreciate all of your hard work. Keep up the great work sir!
Hi Guys, do you have any idea how informative this video really is? I love the directness of the video. No Crap music playing and talking nonsense before you explain the contents. Thank you super kindly. This video is far better than what you think. You’ve helped me out so much. Basically…exams are coming up. (Fundamentals) have a great day. 🙏🏻
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You've become my #1 Teacher on Networking...
Thank you very much for making this video accessible...
Happy to help
I have really learnt a lot from your videos, and will be so happy to join your channel to support. Your animations are awesome, made the learning experience awesome.
I have looked for many explanations on IP addressing. This is by far the best!
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I really like how you make it simple as possible and still make it understandable. I really enjoy your videos. Short, simple and understandable! Keep the good work up, I’m a new subscriber!🔥
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This is an extremely helpful video. I work in IT and regularly get questions from clients about their employees'/family members' internet activities. I do the best I can in explaining public/private IP addresses in layman's terms and will supplement my tutorials with this video in the future.
Glad it was helpful!
Thank you so so much for posting this. Im learning sec + and this helps so much. please continue all that you are doing.
Your great. You explain each and every concept undersatable to anyone. Please continue your dedication. Looking forward to see more from you...
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Fantastic as always! I think it would be great if You would make a video about ports (port forwarding was really helpful, but the basics are missing)
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Thanks for your invaluable service to humanity. Even a 5th grader can understand and apply your teaching.You rock!
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You have the best to the point videos out there based on specific IT topics. Thank You.
I appreciate that!
@@PowerCertAnimatedVideos actually you are the one that deserves the appreciation. I am trying to get my comp tia A+ and network certification and your channel has helped me understand the topics better. I love the fact your videos are short and concise.
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Thank you so much for the video, the first one helped to understand the real different of public and private
Thank you for your videos.. some of them are far better than the videos I’m using for my CompTIA course! I come to your channel when I need some extra clarification.
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Hats Off. One of the best channel available on youtube for understanding technology. God Bless U Sir.
Dude you are awesome. This vid helped my conceptualize the ip address for private and public. I paused at different times and just thought about it. I can explain this to my family and friends which means i understand it. Also, I can tell you are a Trekkie. Live long and prosper.
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The best channel ever. So accurate and simple to understand. Crystal clear explanations
Thanks for the wonderful explanation. I have been watching your videos for concepts of networking and they are really amazing especially with the animation.
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This is absolutely the best explanation on the differences between private and public ip adresses videos. Job well done sir! Are the public IP adresses also classified and what numbers do they begin with?
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from one trekkie to another, thank you for existing.
A couple things:
Most Linux computers these days use "ip a" to get their ip address instead of "ifconfig". The old command can be installed, but is not always there by default. Also, at some point you may want to do a video on specific IP addresses used for multicast, loopback, and broadcast if you haven't done so already.
ip addr show - the full command
Command prompt for OS
I would love this type of video by this RUclipsr
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Can you do a video on the OSI Model and the TCP/IP Address? You're videos are super duper helpful. Thank you so much for making them!!
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Wow now I know what NAT is used for thx bro
Hey, Awesome. Very simply explained the most confusing topic. Looking forward to seeing more such videos on more such topics.
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this is saving my life rn working as a generalist in tech support.
Thank you brother for wonderful explanation.
Thank you for this video
.I would request you to put the complete osi model
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I always admire how you always giving so much time for your tutorial, I'm not sure if this under your scope, but I'm hoping to hear tutorial on one of the popular system internal tools the "Process explorer"
You can go through on my Digital Library
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Great video. It gives some wider context relating to subnets.
Valuable information, thank you for the demonstration
This video made helped me comple the puzzle of wifi, thanks a lot!
Your explanation is very nice and very easy to understanding
This channel is amazing. Thank you for sharing knowledge.
Many thanks for the great info out there!
Thanks, that was well-explained. However, I think that was a missed opportunity to talk about CGNs but still it's sufficient enough.
Thanks for the knowledge...
This is the BEST explanation. Finally I understand the concept. Tq.
These are the best video I have seen on RUclips. If possible can you please make videos on troubleshooting. My ISP is AT&T , they talk to me like I am a networking professional. The last error was “NEW connection temporarily blocked too many requests. Excessive outgoing connections have triggered the Internet security blocking function how outgoing connections are momentarily blocked.
Valuable information learned up. Thanks 4 sharing.👍
Love your content , keep dropping more pls
Cool. Thank you for great explanation
As always, excellent video and very easy to understand. Thank you Sir.
Awesome video..explained all the differnece in very simple words.
Hi Sir please make a video regarding hybrid port thank you
dude, imagine if the thumbnail actually shows a real ip of someone 💀💀
and good explanations, keep it up
I really find that ur videos are really helpful & easy to understand thanks a lot man
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You are doing great work
Please explain about power supply and optical disc drive
Thank you so much, I couln't understand quite a while how could you possibly subnet a public ip address into a network, that seemed insade for me, until this video made me to realize that the raouter translates it to the whole other world called internal networks with totally different ip addresses.
Thank you so much !! This is the best wayto learn!!
Awesome explanation!! Thank you so much!
Thank you, great video
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thank you for your videos
Sir you cleared all my doubts in just 7 min.. thank you sir
Again Amazing Explanation. Bravo.
Nice video, simple and understandable. Thank you
Excellent video. the best one I have senn about this topic.
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Could you please do the 5-layer protocol explanation to make all those knowledge connect to each other? thanks
Thank you for this great video . 👍❤️
That explanation was pretty clear. Thank you so much.
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Clear explanation , good job , big thanks
Hello sir, could you please make a video on how a company and its multiple branches located in different countries can be on the same network.
Also when these companies use RFC1918 Private IP addresses range and when the IP Packet travels from one branch to the other branch located in a different country of the same company with the help of multiple ISPs, public internet and private networks.
Thanks for your invaluable service to humanity
Great explanation.
you just help me really good now, thank you so much
Good explanation
Awesome explanation...Thank you
Amazing videos, please keep them coming.
Humble Video Request : Please kindly post a video on UPnP. Thanks in advance !!!
thank you, very informational.
Thank you so much Sir. Excellent explanation 👍
Great explanation, as usual.
Amazing explanation as usual!
Thank you .. would appreciate if one video can be created on shared ip addresses .
I have heard a lot of people explain this subject, but none go over what the 3 diff classes of private IPs are used for
Straightforward explanation. ❤
Thank you!!
helpful video clear up my concepts
thanks, very enlightening!
This channel chage my hole life thank you alot im adicted to this channel as new in PenTester i learn alot alot thank you so much
It might be beneficial to explain CGN's next since this is fast becoming the norm for ISP's because of IPv4 shortage. And so your ISP assigned IP would not be public.
I mentioned that in an earlier reply. Of course the answer to this nonsense is to move to IPv6. I have a /56 prefix from my ISP, which provides 2^72 public addresses. On IPv6 a network would normally be /64, which provides 18.4 billion, billion addresses. A /56 provides 256 /64s.
@@James_Knott Totally agree. Old habits I guess. I've also heard some express fear of not being behind NAT on IPv6 as there's a sense of security in that.
@@James_Knott I have IPv6 too (from one of two ISPs), but dual-stack is a must for at least next ten years. Not mentioning that about half of devices in my LAN are IPv4 only (even 2021 bought devices). So pure IPv6 is still far future :-(
@@remetremet Well, some transition method is needed. My ISP also provides dual stack, but on the cell network they use 464XLAT, which converts IPv4 to IPv6 when needed. This means they can have an IPv6 only network, but I don't know if they're there yet. ISPs could also use it. Some ISPs use CGNAT for IPv4 in addition to IPv6.
IP config on command prompt OS
good information and easy explanation