What is a TCP port and how is it used during connections?

Simple, clear explanantion; straight to the point; very easy to understand what's going on. Thank you!!

I always explain it by telling people that the IP gets you to the machine then the port gets you to that individual application on that machine. I work on IBM mainframes so we have hundreds of applications on one machine which requires hundreds of ports on one machine.

nice 👍

THANKS SOOOO MUCH!!!

Thank you very much!

why you fake your voice to sound cool, cant even follow with you so annoying

Thank you!

Thank you! Great explanation.

Thank you

thanks

THANK YOU

I have a port

Simple to understand.thank you

thanks!
your explanation was awsome

Excellent

Thank you so much for this explanation.

excellent!

So if u get this right, every port has its own task. Like you said 1001 till 1005 is used for the website for example. So how do i know what port are used by my Xbox for example? I want to open the ports, and i have to add new "command" in the list if you know what i mean..so is there a way to check this?

good video, the only thing missed was writing out the colon and port number next to the ip to wrap it up

Can you expand on remote ports vs local? Say I want an inbound rule for windows defender to accept all connections addressed with port 1234... should that be the local port or remote?

👍Thank you teacher ❤️

Great breakdown, wish I had him as a prof.

so glad that jesse pinkman found his passion in IT!

Explained it that simple!!! Thank you!

Thanks! This helps a lot! C From Maryland USA

Thanks for your video.

1 year ago
That was a slam SLAM DUNK

Just my 2 cents. This is only half explanation about the used ports. On both sides, local ports are getting assigned when the connection is being established. IP+Port = Socket. Two sockets are used for TCP communication. The server's listening port (80 in your example) is only used for establishing a connection by the client. After that the pair ServerIP:ServerLocalPort and ClientIP:ClientLocalPort are participating in the communication. These local ports are randomly assigned. This, I believe, needs to be explained in this video as well.

very well explained, thank you

What I'm curious about are ports say between two site to site VPN connections. My guess is they would be listening on the one port only at both ends to keep the tunnel for eg. Openvpn using 1184 only on both sides? so I'm assuming here that no Ephemeral ports are used at all? does anyone know for sure? thanks

Nice one

Does anyone know if Doctor Challen is still alive and/or teaching?

Good explanation thanks. But did you just redefine numbers? 10003 is not one thousand and three. It is ten thousand and three.

you are freezing isn't it?

this was awesome, thankyou

very well explained, thank you

Thanks

Well explained...Thank you!!!

very good explanation. thank you

Hey that was really useful.

excellent

clear and simple , you're a great professor . greetings from tunisia <3

Thanks for the example..

Great explanation. Thanks sooo much!

Very clear and understandable explanation! Thank you!

That was a slam SLAM DUNK ! Thank you.

thank you

Nice! This was well explained. Thank you very much! :)