The Beauty of the Internet Protocol

In this episode of the backend engineering show we discuss the Internet Protocol. A beautiful, elegant protocol that made the Internet possible. We discuss why we need an IP address, how routing is done and how VPNs take advantage of the agnostic nature to encrypt traffic
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[@hnasr]

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

[@probhakarsarkar2430]

Done! ❤️

[@gregtaylor9806]

I really enjoy the occasional inclusion of Arabic expressions. Before I started studying web dev, I was taking Arabic lessons. Great work as always, Hussein. It brings me joy that when I first started watching your videos years ago, I understood so little. Now I understand a great deal more. I really appreciate you and hope one day I can approach your level of understanding and passion for this craft. In sha’Allah

[@abdhelal]

Great video 👍 as always 😊

[@mmanuel]

you should add visual examples or drawings, i always zone out :(

[@MysterCannabis]

same here, I do my best to focus on the entire thing but fail every time

[@girdharvikash195]

Hi Hussein, i recently joined your channel and i love the way you tell complex topic very easily. can you make a video on wifi technology. I mean on which layer wifi technology comes?

[@maurin5266]

keep it up man 💪

[@anupamchakrawarti1803]

No useless intro, dum dang dum and straight to the point. Saved some bandwidth 😆

[@anasabdullahsaber6954]

Very good video as always. Would be great to get videos about transaction in blockchain and how smart contract work We need real example how consensus with smart contract work maybe with nodejs. Thanks

[@kumar16pawan]

Hi Hussein, great insights , Thanks. Just wanted to know the good references you are following, Because I've been going through a book(Top Down approach- Kurose and Ross ) also . Thanks

[@dealerofdeeth6043]

:0 your voice sounds like butter to my American ears

[@mdshehab8947]

Great ❤

[@khalid5d3]

Can you talk about this: 1Password syncing went down for a few hours today during a database upgrade

[@Theemightyone]

Maybe read into the shared registry system and explain this from that perspective.

[@r3sist197]

Love your playstation t shirt! Where can we get it too?

[@bashardlaleh2110]

I always wondered why don't forbidden destinations block packets based on x-forwarded-to header since it has the actual source IP ? I mean this way even VPNs can't make you access a forbidden website in your country, maybe I'm missing something but I would like to get an answer

[@monarch0243]

commenting to get notification of this

[@saikatdutta1991]

what about the proxy compare to vpn.. isn't both look same ?

[@mahmutbayri]

Could you fix the link of `Python on the Backend ` course in the description, please?

[@hnasr]

Thanks! Fixed

[@autohmae]

If anyone cares the current Internet search space is over 900 000 prefixes/subnets (smallest are /24). And over 150 000 prefix/subnets for IPv6 (smallest are /48). PS Hi Hussein 🙂

[@probhakarsarkar2430]

21:22 ISP is like wtf is going on 🤣🤣🤣

[@blingsingh1057]

Great content as always.👍 1.5x speed 🚄

[@MartinsTalbergs]

I constantly zone out into the sea of product placement (in the background)

[@tooru]

love you

[@hsjsjssnnsjsjs1666]

Please bro iptables part 3

[@prashanth_js]

wild wild web is totally accurate

[@proactivex]

Put this in watch later. Then hit play.

[@CyberTronics]

More Arabic expressions ! Your videos great keep going.

[@whoknows3679]

Third! 👨‍💻

[@sump2155]

Feeling proud. 2nd comment. Who cares what he says.

[@neonx9356]

مصختونها 🤣🤣🤣

[@sanilkhurana3991]

Hey Hussein, great video, the protocol bit does have an option for "IP in IP"(en.wikipedia.org/wiki/List_of_IP_protocol_numbers), so would the ISP know when we are using a VPN or can a VPN just set that bit to some other protocol?

[@supernovaw39]

IP in IP is a very niche protocol that doesn't even perform encryption, and it's in the same way on top of IP as TCP and UDP. Chances are your VPN uses UDP (hopefully not TCP!). Your ISP can still tell it's VPN traffic from a lot of characteristics of the traffic, including: - it goes to the same IP address, the VPN's IP addresses are public knowledge; - it probably uses UDP on a common port like 1194 (OpenVPN) or 51820 (WireGuard) which identifies the VPN protocol; - even if packets don't go to a common port, it could be easy to tell the protocol by inspecting packets. You could try obfuscating your VPN traffic by routing it through HTTPS or SSH (using "sshuttle"). This way it looks like you're using those protocols, which encrypt your traffic, including the signs of the VPN protocol inside. Since HTTPS and SSH use TCP, it's suboptimal and can lead to TCP meltdown (tunneling TCP inside of TCP is a bad idea). Also, by observing the timings and payload sizes it is still possible to tell that you're hiding a VPN connecton inside, but that's very advanced and unless you live in PRC nobody's probably gonna go that far to spy on you.