NAT Explained - Network Address Translation

Thank you

Downvoted for failing to mention that every device also needs a port number. The NAT doesn't just assign an IP address to each device but also a port. The port number is necessary. Data sent from an Internet site to a router needs to indicate the port that the recipient will receive it on. The IP address plus port is what uniquely defines every private device - an not just the IP address.

What I don't understand is, once the outside server receives the packet, how does it know who does it have to return it to? I mean, obviously he knows the public IP of my router, but how does that router know what local address to send it back to?

super helpful!!!

So ipv6 essentially just makes up addresses longer?

Aliens: „Hello earthlings. We will attach you to our galaxy internet but your ip6 won‘t cut it. You need ip42 now.

Assigning an IPv6 address to half of each IPv6 addresses is the only "practical" way I find to "start consuming" IPv6 addresses

wow just a simple nice explanation.

I like your channel.. It’s amazing… Thanks a lot

Thank you so much

Gonna sit semester final exam & watching your videos. Your videos certainly make one's concept clear. Thank you so much for such nice explanation and animation as well.

thanks

But why are the ipv4 finite?why can't you just ad numbers and dots ad infinitum?

awesome didactics

Thanks for the video… pls arrange for CGNAT

very useful video. thank you

I was working in a 1 house (or mansion) on the network (WiFi & wired) there was 70 devices.
So this is just one house..... how many houses are around the world & also more & more devices are becoming network devices, before long I think our toasters will aswell 😎

Thank you so much for visual explanation. Thats the best way to explain something. Gracias.

no explicaste como hace el nat....

Your videos are like wiki. I am learning Azure and its super helpful. Can you please explain how the Gateway marshals and unmarshals the Network packets to derive the public to private transaltion.

Great video! Thanks!

And yet, we have not adopted IPv6 on large scale...

Okay? But how does this translation occur? A router has a single public IP address, so how do other devices connected to other routers know how to communicate with a device on my network? Last time I checked the IP header only has room for a single destination address. How is this communicated?

Good video.

I can't wait for when IPv6 runs out!

Thanks for this simple explanation.!

IPv6 address not required NAT for public IP address translation into private IP address and private IP address translation into public in address
For IPv4 address NAT required for address translation

Am I correct Sir ? Thank you Sir

But, how does the router determine which packet (it received from the internet) was for which private IP?

Thank you so much!

Most brilliant knowledge u give...

So concise and to the point, thank you!

😀Hi, thanks a lot for this amazing video. Would like to know please what kind of software do you use to make this presentation/animation? Tks

When a communication comes from the public side, how does it determine which device to connect to? Just having the IP of the router wouldn't be enough, it seems it would still have to have information about the specific device. So how does it accomplish this? Is the host address tacked onto the router IP somehow?

My Best IT Channel

Finally I've found a comprehensive explanation of NAT! Thanks a lot

Hi, sir .. If i am mobile data not a router.. then how it's converted to public IP address

thank you so much

This does not explain how NAT works. Just what it does.

Thank you

ohhh I get it now.

Thank you for explaining how public addresses are translated into private ones :)

The Greatest Explainatin ever

In the near future, we won't need IPv6 addresses.
New generation of IP addresses, called PowerCert addresses will be used.
Because again ENGINEERS WERE WRONG ABOUT IPv6 TOO

Thanks for the explanation, very useful

I wish we have 1e90 IP address so we can give IP to all atoms in visible universe. 🤣🤣