TCP/IP for Programmers

TCP/IP is the network protocol that makes the Internet and modern networking function, but even experienced coders may ask, "what's a default gateway?".

This class will teach the basic concepts of TCP/IP so that coders understand why it matters, and how it works. We'll discuss everything from what an IP Address is, to Name Resolution, TCP Ports, and a whole bunch more.

The class will go over:
- Basic Concept of the Ethernet Standard
- IP and MAC Addresses
- Understanding Subnets
- DHCP
- Ethernet and TCP/IP Hardware
- TCP Ports
- DNS and Reverse DNS
- Understanding URL's
- PING, TRACEROUTE, IP and ARP Commands
- Virtual Hosts in Apache and Web Servers
- and more....

[NiwatiX]

Hey Eli, I've been learning from you since I'm a young adult more than 10 years ago now my god. You helped me get a career, build, feed myself, get a car.. all of those things you played a small role everyday by teaching me your craft. I cannot be more grateful, thank you so much so so much. I've been teaching to the new generation with the same love and passion as you, everytime I'm assigned a new hire or an intern I keep you in my heart and I do the very best job I can do and I'm infinitely patient in honor to what you gave us a decade ago.

[khshur]

I watched you 5 years ago ..i had no IT experience what so ever .. now 5 years later im a Devops engineer on google cloud, just wanted to say ..thank you very much 🙏

[WackNoir]

you are literally the greatest teacher of all time

[johnhanley]

I am very glad to see a video like this one. I have not watched it yet, as that will take me several days. I worked on the original design of TCP/IP while at AT&T Bell Labs. I attended many RFC meetings while we hammered out technical issues. Back then, a 300-baud modem was considered fast. Later I worked on the design of packet switching and ISDN which created cell phones and gave businesses 64 kilobit Internet connections. Shocking how things have changed yet stayed the same.

[chriss]

I remember learning about subnet masking from Eli in 2013 - eventually ended up working in the network world for awhile.

[conpadany]

This guy been around for awhile, OG youtube teacher

[reyuki-i]

timestamp:
- ... - (If you see my comment before the video starts, please fill in the early timestamp!)
- 51:15 - start discussing Layer 3 Networking
- 53:00 - domain of network (?)
- 57:25 - Dr. Eli wants to throw a Koosh ball into the virtual world? XD
- 57:56 - start discussing specific protocol on layer 3, TCP/IP v4
- 59:39 - don't turn off ICMP unless you know what the hell you are doing (why though? answered on 1:01:32)
- 1:02:38 - start discussing IP address
- somewhere - subnet mask, network and host address
- 1:08:00 - network and broadcast address (?)
- 1:13:00 - highlight important thing to understand
- 1:14:24 - private IP address
- 1:17:38 - switches and ARP
- 1:20:50 - a note on arp command
- 1:22:00 - start discussing tcp port
- 1:27:30 - problem with chinese product/device
- 1:28:46 - start discussing router and default gateaway
- 1:30:25 - you can demonstrate it with traceroute
- 1:32:50 - what is a modem?
- 1:34:25 - NAT and port forwarding
- 1:41:42 - how noobs thinking (?)
- 1:43:00 - port forwarding
- 1:45:05 - be careful with CGNAT (my personal question: is it possible to perform tcp or udp hole punching on CGNAT scenario?)
- 1:48:58 - problem with chinese product/device
- 1:49:29 - start discussing internet facing static IP address
- 1:51:44 - start discussing firewall
- 1:55:54 - types or level of firewall (If MAC spoofing is possible, can you disconnect someone's IP while impersonating it? and thus bypass the firewall because you're now whitelisted?)
- 1:58:40 - start discussing DNS
- 2:03:30 - how hosts file can be useful XD
- break for a minute, I will edit later.

[yusrasuliman]

You have been my teacher since 2013. I had a seminar about VPN back then, and you guided me in creating a neat and impressive presentation on "How VPN Works". Many blessings, and thank you so much!❤

[mystrdat]

Dude looks like a veteran bricklayer meets hobo yoga instructor who just so happens to record the best TCP/IP course ever as a weekend hobby.

[jafeta.]

This is the first time YouTube recommends your channel to me. Your channel looks like a gem.

[ThePieas]

this is top tier.
thanks from the bottom of my heart.

[eddiephiri]

Eli made me comprehend networking concepts back in the day. His voice is one I recognize anytime! Great teacher!

[spartanghost_]

I found this video by accident and you are probably the greatest teacher I have encountered

[gameonlive]

Eli you're the reason why I am in IT industry today, thank you for contributing in my education process. Respect

[janoscs.]

Eli, great stuff!
Hope you not gonna get YT strike again... for TCP/IP !
Keep up the great, exceptional work mate!
Best regards from Scotland!

[LHCB]

My first thought: This is exactly what I need right now!

My second thought: (after seeing the length) This might be more in depth than I originally thought.

[karimbenelhadj]

really enjoy your videos, wish I had time to participate in one of you dojo but my actual job is time consuming. Please keep what you're doing as it's on of the most useful and interesting content in this platform

[palindrome]

I'm only at 10 minutes in to the video but this is amazing. You're describing so many frustrations and ... well I'm sure this is good for 3 hours. I'm gonna keep watching. Thank you for the video.

[dragenn]

This is going to be a worthwhile watch

[MRF]

Been a HUGE fan man since long time ago. My introduction to learning security and protocol was through you when you were still in prison wearing your orange jumpsuit yet teaching us incredible stuff. Respect.