UDP hole punching | The Backend Engineering Show

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In this episode of the backend engineering show I discuss UDP hole punching in details.
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Опубликовано:

29 май 2022

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Комментарии : 39

@hnasr 2 года назад

Get my Fundamentals of Networking for Effective Backends udemy course Head to network.husseinnasser.com (link redirects to udemy with coupon)

@biplobmanna 2 года назад

Starting the day with some Backend Engineering is substantially motivating to get some real engineering work done.

@HarshKapadia 2 года назад

Yes!

@zaheeruddinfaiz7064 2 года назад

7:38 I was thinking of Pam from The Office. When she was receiving huge bouqes of flower on Valentine's Day. But none of them were for herself. She got really sad seeing that. She kept of "routing" the boques to Phyllis :(

@withdjmorris Год назад

Dude the hole thing came in just brilliant 🤣

@GmanGavin1 Год назад

Thank you thank you thank you!!! Quality content, great mic quality, clear and concise talk, not overwhelming yet very informative. Subbed!

@lukaswerner4390 Год назад

I just re-watched this after looking at libp2p hole punching. This is a good explainer. But fun fact we can do p2p through symmetric nat because of the sync packet being set. Pretty cool stuff

@mauroinde 2 года назад

amazing, happy to follow you Mr.

@Shuriken255 Год назад

I really like the way you explain the concepts behind the terms like this one. Very understandable and clear.

@bossragegamer4081 2 года назад

Great video and explanation of UDP hole punching.

@itherna 2 года назад

Hi Hussein and thanks for a great video. Is there any time limit for how long each hole exists before the router closes it?

@noraalsulttan1437 Месяц назад

thank you, was easy to follow through :)

@jolachye8450 Год назад

Hi Hussein. Once you punched a hole with UDP and start the peer-to-peer communication between two computer, is it possible to keep that connection but convert it from UDP to TCP, so that you can continue the communication with TCP (instead uf UDP) ?

@Shadrak33 8 месяцев назад

great information! can you tell me why I can't get my UDP hole punching script to work inside a docker container when it works just fine outside it?

@masonsafavi1886 2 года назад

Huge thanks صدیقی

@rocketleague2136 2 года назад

@Hussain Nasser give us your top10 book for back end programmers!

@zaheeruddinfaiz7064 2 года назад

Hussain, what about the Virtual Server setting that is present on the routers. I think we can use that to forward the packet to the relavent machine in the private network. While setting this, we specify the private ip address of the machine and the port of the machine where we want to route the packet to.

@ili101 2 года назад

"Virtual Servers" is a confusing synonym to "Port Forwarding", port forwarding will solve this problem but need to be configured manually on your router, a better solution is "UPnP" which is a protocol that let your PC send a request to your router to set a port forwarding rule for you automatically.

@zaheeruddinfaiz7064 2 года назад

@@ili101 That is so interesting. I will look into UPnP 🙂

@snowzZzZz Месяц назад

If I have a server (that is already port forwarded) and a client Can I just add a STUN library like libnice to the server, and fetch the public ip/port from the server, then send to the server again with this info, and then they communicate? if summerrical NAT only accepts return packets from whom it sent the first packet to, then this should solve this issue, without the need to configure an in the middle server

@autohmae 2 года назад

11:20 that sounds like an other backronym 13:28 it's especially problematic if both sides have port randomization. 15:43 unless you are Dan Kaminsky of course... (RIP) see: DNS Rebinding And More Packet Tricks at 24c3