Public vs Private IP Address

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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.

[@PowerCertAnimatedVideos]

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[@nerd2544]

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 😼

[@MRDamar]

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?

[@mr.liquifier8343]

How does VPNS work

[@mr.liquifier8343]

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?

[@langtontdzapenga2746]

​😮

[@toddhadley2696]

This dude is the best! All of his videos are clear, concise, and so easy to understand. I passed my A+ due to a large portion of his videos.

[@viking3035]

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👍

[@user-lm9li2tr5j]

Absolutely 👍

[@jacobalexander560]

I will be taking my A+ soon, any advice?

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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

[@PowerCertAnimatedVideos]

So nice of you

[@rodsmade]

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[@hyderabadperlmongers3654]

i echo with you

[@serious6037]

True.

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[@Mastakilla91]

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[@alexeat-sand9938]

if you were my teacher i would probably be CEO of Yahoo

[@Jomster777]

Probably CTO at best. Basically the CEO of the company but handles more on the Technology-side of operations. CTO’s are not on the same level as CEOs btw, fyi.

[@purplevanilla]

Keep dreaming.

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[@eunicecallueng]

This is the very first time that I will leave a KZbin 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!

[@James_Knott]

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.

[@remetremet]

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.

[@James_Knott]

@@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.

[@dannylck1]

i wish i can understand ~~~~~

[@James_Knott]

@@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.

[@James_Knott]

@@dannylck1 What is it you don't understand?

[@Iluvc4rs]

From someone that had little to no knowledge regarding the topic, this has been rather educating. Thank you!

[@bokagnemounir9391]

You've become my #1 Teacher on Networking... Thank you very much for making this video accessible...

[@PowerCertAnimatedVideos]

Happy to help

[@kcarmack99]

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.

[@PowerCertAnimatedVideos]

Glad it was helpful!

[@RBASB10]

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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[@YoloTravelExplorer]

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"

[@novriastariihsan9991]

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[@gwgux]

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.

[@denkozlov4220]

ip addr show - the full command

[@novriastariihsan9991]

Command prompt for OS

[@briabolling4583]

I would love this type of video by this KZbinr

[@prestonoreilly3890]

I have looked for many explanations on IP addressing. This is by far the best!

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[@rechargebattery6005]

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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.

[@gothparadigm]

from one trekkie to another, thank you for existing.

[@softwareeEngineering]

hello bro, I have to admit that to me your videos are personally the best in terms of explanation. Keep up the good work 😊

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[@ayanaram7995]

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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[@thecrownofnoah9100]

Wow now I know what NAT is used for thx bro

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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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[@rajhansyewale409]

exellant information. you solve my biggest myth behind the ip address... thnak you

[@elyesgmz_lil_boi]

dude, imagine if the thumbnail actually shows a real ip of someone 💀💀 and good explanations, keep it up

[@pawerix366]

3:50 there are wrong subnet masks for private class B and C, there should be 12 bits (255.240.0.0) for private class B and 16 bits (255.255.0.0) for private class C. IP address ranges are correct.

[@novriastariihsan9991]

32 bits and 64 bits

[@eazy_black]

Yes

[@VinhNguyen-ul8yg]

You have the best to the point videos out there based on specific IT topics. Thank You.

[@PowerCertAnimatedVideos]

I appreciate that!

[@VinhNguyen-ul8yg]

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[@melissachinnici]

this is saving my life rn working as a generalist in tech support.

[@tricky_d1672]

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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[@blcjck8121]

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.

[@James_Knott]

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.

[@blcjck8121]

@@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.

[@remetremet]

@@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 :-(

[@James_Knott]

@@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.

[@novriastariihsan9991]

IP config on command prompt OS

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[@dora4e]

Very simple some humans do need this knowledge to undestand the differences 🎉

[@learnawais3015]

Hats Off. One of the best channel available on youtube for understanding technology. God Bless U Sir.

[@antoninmartykan9004]

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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The best channel ever. So accurate and simple to understand. Crystal clear explanations

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[@yvesmingiedi]

Thank you so much for the video, the first one helped to understand the real different of public and private

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[@tj252012]

Thank you so so much for posting this. Im learning sec + and this helps so much. please continue all that you are doing.

[@simbakali]

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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[@justinjohn93]

Whoever makes these videos, Thanks so much, God bless the entire team

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[@andrewbenyeogor5534]

Would love to have some verifications on the difference between a public IP and a default gateway

[@JJFlores197]

The public IP address is the IP that your internet provider assigns your router. The default gateway is essentially your router's internal IP address. You have to keep in mind that routers have 2 interfaces: WAN and LAN. They both have their own IP and MAC addresses. As mentioned, the WAN port has the public IP address. The LAN port has the default IP address configured on the router; its also known as the default gateway IP.

[@prasathj7436]

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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[@anonymousthing4199]

Thank you for this video .I would request you to put the complete osi model

[@TeurastajaNexus]

For those people that have problems with games because of strict NAT type, ask your ISP for a public IP. Did the job for me.

[@mbaitodjimsadrack3561]

This channel provide best courses with clear explanation. Thank you!

[@jeremy_317]

simplifies the process. great video!

[@fmradio42]

So nice to not hear annoying repetitive background music.

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Please explain about power supply and optical disc drive

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[@wilhelmbittrich88]

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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THIS IS GOOD INFORMATION FOR THE GENERAL PUBLIC TO KNOW AND INVESTIGATE THE ILLEGAL USE OF THESE ADDRESSES.

[@getalife6654]

This video made helped me comple the puzzle of wifi, thanks a lot!

[@Darkev77]

Awesome video! However, if the Internet wants to sent a packet to a particular device (hidden private IP) in a home, but all devices in that home have the same public IP, how does the router know to which device it should send that packet?

[@JJFlores197]

There's something called PAT (port address translation) which is more or less an extension of NAT (network address translation). When your phone, for instance, sends a packet to KZbin, the router receives this packet and will forward to KZbin's servers. However, the router will add a port number to the packet so that when the web server sends a response, the router knows which port it came from and will send it to the correct device inside of your network.

[@Darkev77]

@@JJFlores197 Wow, thank you so much!!! Much appreciated

[@being.human119]

The best education content on youtube

[@campos3452]

What about virtual Mac/IP addresses?

[@microsoftsarker]

Thanks for your invaluable service to humanity

[@rameshnambi]

Thank you brother for wonderful explanation.

[@KissMyBalls]

2:13 = A service that's inside your router called DHCP is what assigns your internal devices a private IP

[@Zachsnotboard]

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

[@allisdodd505]

It was a clear explanation! I understood everything. Thank you very much!!

[@user-xc4jp8fy3i]

Щиро дякую за корисну інформацію! Подача матеріалу - відмінна! Процвітання каналу 🎀

[@SRam2468]

Hey, Awesome. Very simply explained the most confusing topic. Looking forward to seeing more such videos on more such topics.

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[@seetsamolapo5600]

IP address - identifier of a computer on a network to know where to send and receive communication from. Every device has to have one Public IP - used for routing traffic across the internet - different networks - assigned by the ISP at a cost - unique and not repeatable, no duplicates anywhere - unsecure as they're traceable on the internet where they're registered Private IP - developed in order to address a shortage of public IP addresses - cannot access/transmit to the internet as they're not registered on the internet, without a NAT gateway - repeateble in different LANs/other private networks and assigned by the DHCP without cost and save up the limited public IPs and cost being repeatable - secure and untraceable outside of the private network

[@marlymutos1000]

Thanks for the knowledge...

[@Mrs.Sonawane]

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[@Quadratojugal]

Thanks, that was well-explained. However, I think that was a missed opportunity to talk about CGNs but still it's sufficient enough.

[@erickangeloayran3488]

Hi Sir please make a video regarding hybrid port thank you

[@Scandy_d]

Why does my pc's public ip address differ to my phone's public ip when connected via my mobile hotspot? Doesn't my phone act as a router and is assigned one public ip address for all the hosts connected to it?

[@Gamingwithkatelyn]

you just help me really good now, thank you so much

[@coolbreeze8962]

Thank you for making computer information systems info easier to understand. Thank you 🙏 thank you 🙏. I understand it a lot better now . I subscribed and gave you a like 👍 and will tell my other Information technology classmates about your videos

[@amitsamui4008]

Sir you cleared all my doubts in just 7 min.. thank you sir

[@lovelycity1504]

At 3:29 you display a graphic showing the hosts and the router, but I am a bit confused as the hosts do not have the same subnet address as the router this is a bit confusing for me because I thought that computers needed to have the same subnet address as the router in order to comincate with it? Is this rule different for public and private IP addresses?

[@PowerCertAnimatedVideos]

I was actually going to explain this in the video..but I didn't want to confuse people. Routers/modems have 2 network adapters. One network adapter will have a private IP address just like the internal devices...same subnet...etc. The other network adapter will have the public IP.

[@thorshin7357]

thank you for your videos

[@anthony4312]

This is the BEST explanation. Finally I understand the concept. Tq.

[@damakoushik3606]

Your explanation is very nice and very easy to understanding

[@denkozlov4220]

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.

[@avinashnamplle9239]

Thanks you for making IT concept so simple to understand 🙌

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[@roland9340]

Lets take five houses with five computers and one router in every house. These routers connected to same ISP. In total we have: 25 private IP addresses given by house routers and 5 public IP addresses given to each house by ISP. Right? .....

[@SoufyanRaj]

As always, excellent video and very easy to understand. Thank you Sir.

[@TheRamsfeld]

Suppose on my private network there are three computers A(192.168.0.1), B(192.168.0.2), C(192.168.0.3). For example computers A and C connect to the same website, what determines to which machine A or C is sent a response to request ? (after all, they have the same public IP)

[@Dominus_Potatus]

combination of MAC Address, Private IP, and ports

[@HearMeLearn]

your router will remember which mac addresses sent a request, even if it's for the exact information, so that when the information is incoming, it's forwarded to the correct machine

[@ronaldkiner1211]

These are the best video I have seen on KZbin. 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.

[@parthkapadia3654]

Aren't the subnet masks incorrect? Class B should have 255.240.0.0 and Class C should have 255.255.0.0 ?

[@romaneestime5004]

Very clear for a 7 minutes video

[@minhluudinh5522]

This channel is amazing. Thank you for sharing knowledge.

[@chromerims]

Great video. It gives some wider context relating to subnets.

[@kiii9403]

Excellent video. the best one I have senn about this topic.

[@haiquannguyen2583]

Cool. Thank you for great explanation

[@topreyalite]

Good explanation

[@mnageh-bo1mm]

Godsake, I Thought that you updated it and would mention IPV6 or something !!

[@PowerCertAnimatedVideos]

I already made a video on IPv4 vs IPv6

[@mnageh-bo1mm]

@@PowerCertAnimatedVideos oh that's great but why you Reposted this?

[@ethanjiang7070]

Could you please do the 5-layer protocol explanation to make all those knowledge connect to each other? thanks

[@sarathsasikumar3759]

Thank You for this amazing content, very simple and direct. Please keep up the good work.

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Thank you, great video

[@idrisgul]

Straightforward explanation. ❤

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[@LotfiORouis]

Awesome explanation!! Thank you so much!

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Valuable information learned up. Thanks 4 sharing.👍