Networking for Hackers and Cybersecurity professionals (How long until you learn something new?)

[@davidbombal]

Let's play a game. How long does it take you to learn something new in this video? // KZbin VIDEOS mentioned // Decrypting TLS HTTP/2 and QUIC with Wireshark: kzbin.info/www/bejne/r6DHdZWdpKihgq8 // KZbin PLAYLIST // Wireshark with Chris Greer: kzbin.info/www/bejne/qJ6piWSMaZ5-brc&pp=iAQB // David SOCIAL // Discord: discord.com/invite/usKSyzb Twitter: twitter.com/davidbombal Instagram: instagram.com/davidbombal LinkedIn: www.linkedin.com/in/davidbombal Facebook: facebook.com/davidbombal.co TikTok: tiktok.com/@davidbombal KZbin: www.youtube.com/@davidbombal // MY STUFF // www.amazon.com/shop/davidbombal // MENU // <a href="#" class="seekto" data-time="0">00:00</a> - Introduction <a href="#" class="seekto" data-time="28">00:28</a> - My Setup <a href="#" class="seekto" data-time="43">00:43</a> - Do You Know? <a href="#" class="seekto" data-time="86">01:26</a> - Start of Demonstration with Telnet <a href="#" class="seekto" data-time="234">03:54</a> - Port Numbers Further Explained <a href="#" class="seekto" data-time="295">04:55</a> - Using Apache2 <a href="#" class="seekto" data-time="389">06:29</a> - How Are Port Numbers Assigned? <a href="#" class="seekto" data-time="519">08:39</a> - Ephemeral Ports <a href="#" class="seekto" data-time="642">10:42</a> - Using Fing <a href="#" class="seekto" data-time="694">11:34</a> - Restarting Apache2 and Denying TCP <a href="#" class="seekto" data-time="954">15:54</a> - Which Port Numbers to Clients Actually Use? <a href="#" class="seekto" data-time="1066">17:46</a> - On Ubuntu <a href="#" class="seekto" data-time="1141">19:01</a> - Theory vs Reality <a href="#" class="seekto" data-time="1417">23:37</a> - Difference Between Port Number and Socket <a href="#" class="seekto" data-time="1567">26:07</a> - Demonstration Continued <a href="#" class="seekto" data-time="1744">29:04</a> - What You've Learned So Far <a href="#" class="seekto" data-time="1794">29:54</a> - One Last Demonstration <a href="#" class="seekto" data-time="1954">32:34</a> - Conclusion and Outro // Detailed MENU // <a href="#" class="seekto" data-time="0">00:00</a>:00 - Introduction to the Game - David introduces a game where viewers comment on the timestamp or topic where they learn something new. <a href="#" class="seekto" data-time="0">00:00</a>:11 - Importance of Port Numbers - Emphasis on understanding port numbers for those interested in cybersecurity, networking, or other fields. <a href="#" class="seekto" data-time="0">00:00</a>:24 - Network Setup - David describes the network setup involving Kali Linux, Cisco routers, a Windows computer, and mobile devices. <a href="#" class="seekto" data-time="0">00:00</a>:48- Understanding Ports and Sockets - Queries about the difference between port numbers and sockets, and their relevance in TCP/IP. <a href="#" class="seekto" data-time="1">00:01</a>:28 - Demonstration with PuTTY and Telnet - A practical demonstration using PuTTY and Telnet to connect to a specific port on a Cisco router. <a href="#" class="seekto" data-time="3">00:03</a>:04 - Character Generator Protocol (CHARGEN) Discussion - Explaining CHARGEN Protocol and its historical significance. <a href="#" class="seekto" data-time="3">00:03</a>:11 - Disabling TCP Small Services and Testing Connection Refusal - The process of disabling TCP small services on a router and testing the impact on connectivity. <a href="#" class="seekto" data-time="4">00:04</a>:01 - Kali Linux Server Setup and Apache Service Start - Setting up a server on Kali Linux and starting the Apache service. <a href="#" class="seekto" data-time="5">00:05</a>:09 - Analyzing Network Traffic with Wireshark - Using Wireshark to analyze traffic and understand port numbers in network communications. <a href="#" class="seekto" data-time="6">00:06</a>:39 - Understanding IANA Port Numbers and Ephemeral Ports - A look at IANA's list of port numbers and an explanation of ephemeral ports. <a href="#" class="seekto" data-time="7">00:07</a>:54 - FCs and Operating System Differences in Port Usage - Discussing RFCs and how different operating systems use various port ranges. <a href="#" class="seekto" data-time="8">00:08</a>:54 - Testing Port Accessibility with Mobile Devices - Using mobile devices to test the accessibility of ports on a network. <a href="#" class="seekto" data-time="11">00:11</a>:38 - Implementing Access Lists on Cisco Router - Creating and modifying access lists on a Cisco router to control network traffic. <a href="#" class="seekto" data-time="14">00:14</a>:06 - Difference Between Port Numbers and Sockets - Explaining the conceptual difference between port numbers and sockets. <a href="#" class="seekto" data-time="16">00:16</a>:00 - Demonstrating SSH Connections and Port Usage - Demonstrating SSH connections from different devices and analyzing the port usage. <a href="#" class="seekto" data-time="18">00:18</a>:03 - Blocking SSH Traffic with Access Lists - Blocking SSH traffic using access lists on a router and observing the effects. <a href="#" class="seekto" data-time="21">00:21</a>:37 - Discussion on DNS Protocol and Traffic Blocking - Discussion on DNS protocols and the impact of blocking DNS traffic with access lists. <a href="#" class="seekto" data-time="27">00:27</a>:41 - Exploring HTTPS and QUIC Protocols with Browser Examples - Exploring HTTPS and QUIC protocols using various web browsers and analyzing network traffic. <a href="#" class="seekto" data-time="32">00:32</a>:11 - Conclusion and Future Content Ideas - Concluding remarks and thoughts on future networking-related content. kali linux linux nmap ssl http https ssh telnet chargen port port numbers wireshark

[@kostasanalytis2925]

Hi David and thank you for one more great video! Just wanted to say, even though I am a network guy, and hold various certifications, I watch all (or almost all) of your videos and honestly I feel like a student getting a better understanding on all things network! Keep up the great work! Hope to see something on SDN and more videos with OTW (another one of the greats!) Thanks again!

[@davidbombal]

@@kostasanalytis2925 Thank you! OTW and I are busy recording some cool videos :)

[@kostasanalytis2925]

@@davidbombal awesome! Can't wait!!

[@vineetbhardwaz6552]

It can't get better than this. A perfect balance of theory and practical.

[@NeterChuks]

How can we get the clear mind set. Things get heavy & confusing with regards to prioritizing which things to study. Tell us some practices to get into FLOW STATE.

[@SteveSmith-mp5fh]

When you get into things, definitely one of the most informative IT professionals on the internet

[@davidbombal]

Thank you very much. You want me to go deep into networking?

[@SnowDaemon]

YES PLEASE! You're channel is great I love ALL the cybersecurity content, you're the best. But Networking is where I could learn the most, especially from a networking Guru like you! I know it's hard putting out free, in-depth content, but I hope the community (and YT) is supporting you enough to do it! I buy your courses when I can (I've bought two so far) @@davidbombal

[@user-nf4ue3ig4m]

​@@davidbombalyes sir, I'm a beginner in network, learning from online, but it seems a little complex, please give me hope that if I put in all the energy, I'll get something out of it, and how can I get money from networking???

[@prodsym]

​@@davidbombal please do...

[@zikobht6618]

As someone who is preparing for my CCNA watching jeremy IT labs, I loved this video as it made me think and verify my knowledge on access-lists and port numbers etc. Thank you so much David you are a role model to me !

[@juanfernandezalvarez3781]

This is gold mate, you are such an incredible communicator. Thanks for your job.

[@davidbombal]

Thank you very much! I appreciate that :)

[@newmoneyedvts]

I’m a a cyber person so everything doesn’t looks new to me 😊, I enjoyed how you played the role

[@stevendonaldson1216]

I love this video because i can see where i was 2 years ago, see where I am now, and see where im going. Great review and preview

[@davidbombal]

Very happy to hear that!

[@techstudio-yt]

I love this, way of retaining and understanding the concept through Devid is far better than anyone else.

[@davidbombal]

Thank you very much for the kind words 😀

[@CorrxptedData]

David, You are awesome! A true gem in the It Networking industry/community. Thank you for all of your videos and courses. As a Network engineer your videos help me so much❤

[@ChrisGreer]

<a href="#" class="seekto" data-time="346">5:46</a> with Wireshark! 👏👏👏 Nice job David!

[@patrickhallermann3844]

For someone just starting out on their journey, your content is really great. I learned something new in 3 minutes. :) I also like how you have guests that talk about various topics you cover more in depth.

[@DaveRx]

Clear and articulate language, super professional production and above all very didactic explanations. David is a real crack

[@SnowDaemon]

I absolutely hate Networking. That's why I've been studying it for the last year. I need to understand as best I can to become the best Linux Systems & Security professional that I can be. It's hard though. I wish we didnt still have to learn subnetting! I have nightmares about subnetting! Thanks David, you're the best!

[@davidbombal]

It's worth it getting through the pain so you can win. Subnetting is something that I think a lot of people hate.... but you will win this battle. Just keep on learning.

[@DzintarsDev]

Wait until you will get into SDN. :D

[@Hartley94]

Well said David.@@davidbombal

[@gag_singh]

I feel you, I highly suggest you to give 'Practical Networking' a shot, his subnetting videos are easy to understand, they helped me master subnetting.

[@Xiy114]

Don't worry my friend you're going to be the best! All you have to understand is as much as you can, then let others do their thing. You come together and will do great. You can do things others can't and vise versa.

[@Cyber_realm]

Thank you for this great content my hero. I believe it will be good if you make a full course about networking.

[@davidbombal]

You're welcome! Glad you enjoyed the video :)

[@SnowDaemon]

He has paid networking courses, they're great. If you want him to do free networking courses on YT, please consider donating! (I'm just a fan who also wants him to create free courses but I know he needs money to do it!)

[@erikjakobsen968]

Really enjoyed this video and looking forward to your in-depth networking videos.

[@DzintarsDev]

It would be great to explain what the "connection" actually is and how does it "look like". I mean... OS kernel is handling various connections. They are held in-memory (I assume). They most likely look like some kind of structs with some fields. Why is that important to manage amount of open connection? What limits they have. What implications they have on CPU? Etc. Also when you create ACL's on your router/switch... how they are physically enforced on that hardware?

[@Samirfromthefuture]

from someone who has started learning on january 2023 and already have a really good foundation in networking i definetly have learned something new. i love your channel.

[@davidbombal]

Thank you!

[@darkspongejm]

For me I learned something new when you discussed sockets @ <a href="#" class="seekto" data-time="1420">23:40</a>. Thanks again! Great work as usual.

[@Remowylliams]

This is pretty basic networking. I went through it though I've been doing networking for years. Thanks for the video I seem to have down what you've provided. I've always considered ports, for well known services to be the listening ports, while the sockets are the working network ports. Because normally you don't want a service that listens to only the first connection that comes in. You end up with a denial of service for everyone else till the connection is broken and resets the port. That's why you end up with port 42341 when you connected to port 80 initially. It moves you out of the way so other clients can connect to that service.

[@blaxbrian6877]

I love the way you break down networking concepts! Somehow, your explanations just click with me more than slogging through a CCNA book. It's like you're the guide to the networking wonderland

[@RahimLadhajuma]

Love this! Interesting content! Already got me interest right at the Port Number and Server section! Cheers

[@wtfanupam]

I never loved networking before watching your videos! thanks man

[@sudhirkashyap6616]

Sir I am 49 trying to learn. I am your student from Udemy. You are one of the best teacher ❤🙏🙏

[@davidbombal]

Thank you. All the very best for your journey!

[@pjpalmerson]

in depth, beginner networking videos....YES! Thank you for this.

[@liveloveasap]

thank you so much for the detailed menu. It make so much easier to understand each section.

[@davidbombal]

You're very welcome!

[@user-jo1iq2id6i]

@davidbombal Thank you so much for making this video! I love security, however, I feel like a lot of creators in youtube disregard the foundational aspects that require networking. I am new to IT and looking switch careers, and love watching videos that shows the tangency between foundational knowledge to Cybersecurity :) Please continue making more videos like this! Thank you!

[@davidbombal]

You're very welcome! Thank you for the great comment :)

[@zchantzis]

Always learn always improve David!I am trying not forget this!Thank you 🙏🙏

[@davidbombal]

Just get 1% better every day and it's amazing how much you can do in a year!

[@J_G_Network]

Thank you for sharing, I took a networking class online but it was reading from a book and some of the topics covered were a bit challenging to me. The whole video felt like an online class and everything covered helped me understand a bit more on what I read from a book. I am a cybersecurity student at the moment.

[@RuxUnderscore]

This was a fun video. Most of it was just refresher for me, but socket was something I didn't really have a good off-the-top-of-my-head definition for. Thanks, David!

[@xavi9933]

I came from an other background, I was listening carefully since the video started, and all the information was new to me, but I zoomed out at Mr. Been time stamp😂, will save this video to return to it later, as now I'm excited to start playing around with my Kali Linux VM just downloaded it yesterday following your instructions Mr. David😊Thank you so much✨

[@me6956]

Dear David, I wanted to say a huge thank you to you! Your videos have inspired me a lot, and I have learned from you so much! I have also bought your CCNA course on udemy, and it is just another level. Thank you for your work. You are helping us a lot!

[@phlynniii]

It is very good for new people to see this. I know it is a lot of pre working from your side. But you do an fantastic job. Thank you so much!

[@OGSkumse]

Nothing new for me, but I must admit that I had forgotten a thing or two. Some of these things go back 25 years. Great video, and a nice refresher. 👍

[@p2bninjadojo133]

Thank you for the video, I really enjoyed it and I would be looking forward to see more network videos from you! Thank you sir!

[@harshvermac5IT]

After completing my CCNA syllabus, now I got to know that there is dedicated Port Number "19" for debugging purposes right at <a href="#" class="seekto" data-time="142">2:22</a> . Heartily Thankful for these session.

[@dawal85]

Was a very good refresher especially to see those cisco commands :)

[@colinbyerly5212]

Great video presentation , very clear visuals and auditory voice and presentation speed . That would make this a great video to replay and to save for future instruction. Thank you so much for your hard work to help inspire others to use great tools as well as allowed the understanding of the processing events of the powerful tools used . With all the many tools and explanations. That fit perfectly in the time frame. Wish other platforms would also learn from your examples . And again thank you 😎👍🏼💯💯

[@mytechnotalent]

Great breakdown on some love-level networking David have an amazing weekend my friend!

[@F-Society-Mr.Robot-]

David and Chuck have taught me more than all of my college professors combined

[@user-ng7sg1oe7v]

I love this . These type videos is a quick revision of what i have learned

[@rusnakhraj7401]

Hello David, as always thank you for your content. I work with corporate networks almost 10 years. In my opition your ccna course is great for basic networking. I would like to see basic and then advance stuff of cisco ACI and SDN(SDWAN, SDLan) also comparison to other vendors that are used today, tips to troubleshoot, how it works etc. It is really different environment where we move from CLI to GUI and most of the things are done via GUI. Thank you

[@jonathantx]

Very interesting and informative. Really helps connect the dots. Thanks again.

[@sousylvainouattara4109]

As usual, well explain. I didn't know QUIC. I will straight watch the video linked. Thanks sir

[@davidbombal]

You're welcome!

[@joelstolarski2244]

Yes thanks so much Dave. Bought old Belkin router to use as victim kali lab and messed it up already. This is some hard stuff. Essential but quite a concept to get mind around.

[@carsonjamesiv2512]

I think some concepts are starting to sink in. COOL!

[@zaxwrld]

Awesome video, definitely enjoyed the refresher over most of the subjects but the below is what I didn't know or I knew about just didn't know the other details. 1. Chargen, just never heard of it. 2. I knew about Ephemeral ports but didn't know that the ranges varied between OSes. 3. I knew about access lists but didn't know that they showed matches for when something hits it. 4. Sockets, I'm not a programmer but have played with python

[@user-gm9pn6vb7m]

You are a really good teacher! I would love to see more videos like this! :)

[@davidbombal]

Thank you! I'll make more content like this :)

[@kennyayala6189]

Hi Dave, this and your video on Multi-cast are fantastic resources. I do hope you do more content like this! Excellent delivery and explanation with real-world examples! Stay well!

[@ajitoriginal]

After watching this video.. I realized that I have to learn so many things in life. Thank you for educating us ❤

[@rembautimes8808]

The content coverage mixes both theory and practical applications. If your a tech risk manager (like myself), highly suggest make a regular habit to watch this channel on 2X speed. Don't worry if you can't grasp all the items but over time you will understand these concepts , which helps in oversight and being the link between tech team and management.

[@hassana1031]

im familier with this concept in general but i started learning interesting details from second one...😊 thank you...

[@evilsoulz81]

I have just finished my masters in Cyber Security ,Your videos motivated me alot... would like to reach you for more advices . Please let me know how can i reach you. thank you doing wonderful job. You were a true light for me in dark.

[@davidbombal]

Best place to ask for advice is on my Discord. There are a lot of amazing people that can give you advice there.

[@therzook]

I am electrician who has been converted to deal with plcs and automation equipment, everything these days uses some form of networking, I am not brilliant in it but ur videos make my life so much easier to deal with IT mob in my workplace. 😅😅😅

[@derrickly99]

Me who have no idea what's going on😂😂😅

[@davidbombal]

Always keep learning!

[@derrickly99]

@@KymHammond 🤣🤣🤣

[@ALee-Acting-TV]

We've all started there.. You'll begin to pick it up.

[@kidmaad9811]

I remember I was the same like you David is true keep learning

[@newmoneyedvts]

What he is doing is that, he is trying to creat a secu network for his clients, who need to use their resources with his network on like every other network out there most are not really that secured enough to handle bulk tasks

[@zoranmostarlic6221]

Hello David, Thank you for this video, it was a very nice refresher for me, specially the details regaring sockets. I knew of them but now I know understand better. Keep continueing making these kinds of videos. Thanks

[@opiibrar]

Thanks david this video filled many knowledge gaps please make more videos like this🙏

[@lucianjohr5569]

Immediately. This entire video is amazing. This is so informative. One thing that i am struggling a bit is what services listens on what port numbers (Remembering this, but i guess this is age related) . Thanks David for the IANA link

[@offensiveredteam]

Full of learning new stuff in most accurate for example I thought a socket was just ipaddress and port also these well port numbers are used for both client and server at the same time.... Thanks a lot David for enlightening us... Need more such clarifications

[@NicolasAlvesDias]

too much knowledge in one video..... realy thanx sir for making these type videos free to everyone and yes we really need that deap videos on networking

[@jcurzon67]

<a href="#" class="seekto" data-time="1840">30:40</a> Got my Sec+ cert recently but I don't remember the study material or practice tests ever mentioning the QUIC protocol. Will be sure to watch the video on that.

[@user-kd1bp5vk5e]

I learned something new when you discussed sockets @ <a href="#" class="seekto" data-time="1420">23:40</a>.

[@sanka814]

Thanks David, you did a GREAT job as always 👌👌

[@mortisiranitimati]

just by asking questions i learned something new :)

[@RobvandenBoogaard]

Fantastic content! 👌🏻 Love the deep dive videos!

[@StilllX]

Your videos is nice and useful 👏

[@davidbombal]

Glad you like them!

[@user-xx2jo3cq5f]

Mate you are a legend I need more beginners networking videos please

[@BurkenProductions]

Oh nice! We have the same usb-2-rs232 adapter for our cisco cables :D

[@blackisbeautiful89]

You had me at "avian carrier" lol <a href="#" class="seekto" data-time="514">8:34</a>

[@Manney45]

Thanks for this wonderful video. Literally cleared the concept of socket and port . ❤❤ From India ❤

[@apt-get_security]

Hey David, it is really great what you offer to us. I learned new things from <a href="#" class="seekto" data-time="50">00:50</a> I'm really new to the Network topic but I'm curious about it and want to learn more.

[@davidbombal]

Glad you learned something! Just keep on learning :)

[@vlzg5772]

Again a great video, hopefully youd make one about NMAP. I already have somewhat of a decent knowledge of it but want to lean more about it :)

[@sault5942]

I've just started , Hope I will understand it soon.

[@scottspa74]

David, you're doing amazing stuff, here. I do think you should link your interview with Robin Marx about QUIC (one of the best, most detailed explanations, ever - I mean, he helped write the protocol). But I learned networking over 9 months in school (Cisco 200-301 content - and aced it 😅) but then spent the following 15 months with cybersecurity, malware analysis, and data recover using deepspar, and forgot so much of the networking I learned early on, and this is great refresher material. Thank you for what you do! I only recalled a socket as being a port# paired with an IP, not also requiring a 3rd part (L4 protocol). Thank you for all you do.

[@davidbombal]

Thank you! And you're welcome! It's frustrating how much we forget! I've forgotten so many things that I have to restudy... but such is life.

[@Ksc_09]

Could you do a video on how this stuff is put in practical use in an enterprise setting or small business?

[@FCB19873]

David thanks doing this!!! Great for starters and good for refreshing knowledge ❤

[@papafhill9126]

<a href="#" class="seekto" data-time="60">1:00</a> - I learned that I don't know the difference between a socket and a port.

[@Amurr91]

I was struggling to keep up the first 5 minutes, but I'm going to write every word that I don't understand and study it till it becomes second hand knowledge to me

[@cyber_space09]

At least I learned something new, this video needs focus🧐☃️🌲 happy Christmas David bombal ⚡😋

[@JBBost]

<a href="#" class="seekto" data-time="530">8:50</a>, that the IETF put forth standards for IP over Avian Carriers

[@JohnD0h_IT]

Hi David, Great video again, it's always fun to learn with you and it reminds me that I have to buy a new home router in early 2024. As a cybersecurity enthusiast, I think it would be good if you made a video on how to choose (feature to look for) and how to configure our home router. I would like to have features like: Run an add blocker on it (something like PiHole). Run a VPN on it (OpenVPN and/or free version of Proton VPN). Be able to record my network traffic and monitor it. And the other things I don't think now that you think would make our network more secure for 2024! And maybe a section on which brands you know are reliable and have these features, and which brands to avoid, if any! Thanks in advance and you are the best cybersecurity channel on KZbin!

[@vanysteves3735]

Thanks again for everything you do.

[@t.b.6880]

David, great portion of information. Thank You!

[@enjoylifer43v3r]

I like how 1988 in tech world time line is many many years ago😂😂

[@chanceleram]

Amazon test ! I like it very much

[@Continous_growth]

Thank you David for all you do.

[@rgrit75]

protocol, local address, local port = socket. Nice!

[@Kingyhurious]

I watched all your videos because I found it very interesting🎉, I wanna learn ethical hacking but I don't have laptop. And now I'm learning and practicing programing using my Android phone 😅

[@killer266369]

As an IT rookie started to learn things from about <a href="#" class="seekto" data-time="540">9:00</a>

[@SashoSuper]

<a href="#" class="seekto" data-time="0">00:00</a> i learned about the existence of this video.

[@stefan7699]

<a href="#" class="seekto" data-time="117">1:57</a> Wiki explanation of what CHARGEN is. Thanks for the content. BTW, I bought your CCNA course on Udemy.

[@seanwilkinson2291]

Character Generator Protocol was new for me.

[@AbkibarVishnuSarkar]

It will be very helpful if you make a new playlist of Networking beginer to advance lvl tq

[@PatrickScheich]

new thing for me: the clear definition of "socket"

[@galloPinPin]

ok, new to the topic i'm interested on becoming a pentester, i was told i need a good grasp on networking, couldn't post a timestamp srry david, cause the whole topic is new to me HAHA

[@hardtoFReSh]

That was a very safe tutorial !!!

[@Abdullah-wh6ge]

@David, thank you 🙏

[@zeustiger2004]

from in VietNam, thanks you so much.

[@BurkenProductions]

Of course you were gonna take up the avian carrier rfc lol :D

[@Deadpool12353]

Im using the same USB to serial convertor too hooray.

[@Abduselam.m]

Amazing topic thanks so much

[@davidbombal]

You're welcome!

[@rami.0092]

as good as it always is. Thank you, Sir.

[@agritech802]

Great video David, thanks for sharing 👍