Networking Fundamentals: How data moves through the Internet

I started recording a new video series covering How Data moves through the Internet. The intent of this first set of videos is to serve as the first Module of a new course I’m considering developing discussing Networking Fundamentals.

The full course will give anyone looking to start a career in Networking the foundation they need to become competent and successful engineers, and pass job interviews.

Moreover, this course will also give anyone in any sort of IT role insight into whatever it is “the networking folks” are doing every day. This type of cross-discipline training will propel you further in whatever Tech career you are pursuing.

How Data moves through the Internet

Module 1 of this course will be available for free to everyone on YouTube and will teach anyone the very core of Networking: How Data moves through the Internet.

The individual videos for Module 1 are available here:

The (tentative) full course outline is available below. The creation of the full course will depend solely on how much traction the videos above attract. If you would be interested in the full course, taught with the same high quality “practical networking” style, the best way to bring it to fruition is to share the videos above throughout your network.

Networking Fundamentals – Course Outline

Below is the outline for the full Networking Fundamentals course. Keep in mind, the topics are still being scoped, so this outline is subject to change.

  • Module 1 – How Data moves through the Internet
    • (Available for free, see above)
  • Module 2 – IP Addresses and Subnetting
  • Module 3 – Host Configuration and Verification
    • Windows
    • Linux
    • Windows Server
  • Module 4 – TCP and UDP
  • Module 5 – VLANs
  • Module 6 – NAT
  • Module 7 – Network Designs
    • Self Hosting vs Managed Hosting
    • Firewalls
    • Load Balancers
    • Network Topology: Inside and Outside
    • Network Topology: DMZ
    • NIC Bonding / NIC Teaming (Port-Channel / EtherChannel)
    • Virtual Machines (VMs) and Hypervisors
  • Module 8 – Address Resolution Protocol
    • Traditional ARP
    • Gratuitous ARP
    • Proxy ARP
    • ARP Probe and ARP Announcements
  • Module 9 – Troubleshooting Tools
    • Ping
    • Traceroute
    • TCP Traceroute
    • MTR
    • PathPing
    • iperf
    • Netstat
    • Nmap
    • Wireshark
    • TCP Dump
  • Module 10 – Network Protocols
    • DHCP
    • DNS
    • HTTP
    • HTTPS / SSL / TLS
    • SSH
    • FTP
    • TFTP
    • SCP
    • SNMP
    • NTP
  • Module 11 – IPv6
  • Module 12 – Cloud Networking Basics
    • What is the Cloud?
    • “something” as a Service: IaaS, PaaS, SaaS (DaaS, FaaS)
    • Cloud Basics: Amazon AWS
    • Cloud Basics: Google GCP
    • Cloud Basics: Microsoft Azure
  • Module 13 – Network Engineering: (Possibly in it’s own Network Engineering addendum course)
    • STP
    • Port-Channel / Ether-Channel
    • Advanced Routing and Routing Tables Concepts
    • RIP
    • OSPF
    • EIGRP
    • BGP

When complete, this course will be the “must watch” course for anyone looking to get into Networking or understand how Networking works.

Got a suggestion for a topic that would contribute to this goal? Suggest it in the comments below!

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Spanning Tree. Command Line frequently used commands and interpretation of their responses. Subnetting and network design considerations. Configuring tiers of user access of network devices.

+1 to STP!

audio is not working properly. plz check

Yes. It’s okay. I’m having issues with my audio driver. sorry for the confusion.

Hey Ed, I had issues with my Realtek audio. I had to uninstall and reinstall the driver. Great videos

I want more information about internet…. Please send me through e mail

Hello Ed,

Just wanted to says that I highly appreciate what you do. It has helped me understand so much about networking and how it really works behind the scenes,


Great information presented in clear and meaningful fashion.
Much appreciated and please keep up the good work!

Hello Ed,

thanks a lot for your explanations and posted videos, helped me a lot with better understanding of networking processes! Is there maybe a possibility to include VRRP and BFD courses?


I think it would be great to know better on how routers build their address table.
I know there are different protocols for that, with “costs” considerations, hops etc..
A video about all of this material will be really great

p.s. found your website thanks to a YouTube suggestion of one of your videos, I really like you work

I saw you have a module about Cloud networking, will you talk about tunneling?
And why we need them?
e.g. VXLAN?
I still couldn’t understand what exactly the problem VXLAN helps us with..

Perhaps you could cover :
1) VPN (increasingly more people use this for corporate work from home)
2) Different types of last mile connectivity
3) Redundancy models in different parts of the network
4) A couple of concrete case studies to drive home some points
like the role of networks in supporting globe scale apps like whatsapp/twitter etc.

Please, You can send me a slides of series networking fundamentals.
Thanks you.

Is this full course paid? Cause you mentioned in your Video explaining network devices, that only Module 1 will be available on youtube. Where will the rest be available?

I am not sure how detailed Module 4 will be concerning TCP, but one topic I don’t see mentioned is MTU and how path MTU discovery is often broken, and how MSS clamping can mitigate the problem for TCP connections (but not UDP).

But it needs at least a mention, because it’s a common problem causing web pages to hang, when the webserver sends packets assuming 1500 byte MTU, that get dropped in an MTU blackhole.

There are some good resources on the internet (including Cisco’s “Resolve IPv4 Fragmentation, MTU, MSS, and PMTUD Issues with GRE and IPsec” whitepaper, but it is more detailed and dry than most readers will persist through) and the (not so very) short but very good video “TCP MSS clamping – what is it and why do we need it?” by Ivan Pepelnjak

When will the new network course be rolling out?

Please where can i purchase the full networking course ? I really need it

How do I get the full course and I also need information on how to practically connect a remote community to a full network and internet access

How i can see the full course? Video are made very well in free module 1

I suggest to add also wireless (wlc, ise, prime)

Please share for free this entire course, it’s very interesting

How to access the full networking fundamental course? I found the first module on you tube to be cery useful.

Please advise how to access to full course?