You ever seen these devices? Networking for Hackers and Cybersecurity professionals.

[@davidbombal]

How long did it take you to see something new or learn something new in this video? If you want to be an Ethical Hacker or Cybersecurity Professional, you need to understand networking. In this video I show you how to capture traffic using Wireshark and Ethereal using different scenarios: 1) Bus topology 2) Hub topology 3) Bridge topology 4) Switched topology 5) Port mirror / port span 6) Network Tap 7) VLANs and more :) // David's SOCIAL // Discord: discord.com/invite/usKSyzb X: 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 // SPONSORS // Interested in sponsoring my videos? Reach out to my team here: [e-mail] / MENU // 0:00 - Understand how networks work 0:50 - How to capture traffic on a bus network topology // Bus network explained 5:24 - Physical bus network demo // Remotely controlling two PCs 8:07 - Capturing traffic on a bus network demo // Ethereal demo 12:40 - Ethernet hub explained 13:15 - How to capture traffic on a star network topology // Star network topology explained 15:43 - Capturing traffic on a star network demo // Wireshark demo 17:16 - Collision domains explained 19:06 - Replacing ethernet hub with ethernet bridge // Physical ethernet bridge topology explained 20:06 - Capturing traffic on a bridge topology demo // Wireshark demo 21:19 - Ethernet bridge explained 24:01 - Replacing ethernet bridge with ethernet switch -// Physical ethernet switch topology explained 25:30 - Capturing traffic on a switch topology demo // Wireshark demo 27:23 - Ethernet switch explained 29:41 - Capturing traffic on a switch topology demo continued 32:14 - Port mirroring / spanning explanation demo 33:06 - Capturing traffic with an ethernet tap demo 35:00 - Routers explained kali linux linux http apache tap network tap vlan bridge switch router nmap ssl http https ssh telnet chargen port port numbers wireshark bus star Please note that links listed may be affiliate links and provide me with a small percentage/kickback should you use them to purchase any of the items listed or recommended. Thank you for supporting me and this channel! Disclaimer: This video is for educational purposes only. #kalilinux #wireshark #hacker

[@GuadalupeLucio-xb5zu]

I need ur help to expose a scammer pls help

[@maloseevanschaba7343]

I got lost from 21:19, felt like I don't know networking at all

[@Whit3hat]

6min

[@orestlav3985]

0:00, I hae never seen this guy before.

[@someguyanon]

I got into cybersecurity in 2020 after transitioning from another career. I learned a lot about networks and how they work. Often times I found myself learning about things I sort of knew just from growing up in the 90's with the internet and troubleshooting for gaming etc. Once I got into the career as a SOC 1 etc. I rarely found myself needing to know much about this kind of stuff as we worked with SIEMs etc. and ingesting traffic wasn't my part, more so analyzing it. Not so much today after 4 years I have learned a great deal, but still hadn't seen EXACTLY what you were showcasing today in this video. It's one of those sort of Eureka moments of oh yeah, I remember seeing this network equipment in my library when I was 10-12 in 2001-2002 or so. Really helps not only to learn more about what I "know" but also showcases and fills in the blanks on some of the things I did growing up. At first, I gravitated more to the programming and threat detection side of the house, but networking is becoming more and more of an interest the further I go into the career. Keep making videos like this. Well done as always.

[@yassersaied7279]

Being in Network industry for more almost 20 years… that is the best explanation and demonstration for Ethernet technology

[@shekharkumarjha2008]

Finally a video that shows you all , no just diagram but also how it looks like in real World,

[@davidbombal]

I find that seeing the devices makes it so much easier to understand 😀

[@ChrisGreer]

Ok David, I see you friend!! 👏👏 nice video!

[@ProducerBillionaire]

Every time I see that David has made a new video, I really want to watch it as soon as possible. I like your content, thank you )

[@davidbombal]

Thank you very much!

[@savagepro9060]

David captures more traffic than a New York cab driver!

[@davidbombal]

😂

[@hg917]

😂👌👌

[@JonathanReno-o4l]

😂😂

[@satishmeghavvarnam1269]

😂😂😂

[@tammiealexander7102]

95% of what you explained and did was new to me. I’m trying to build my own home network. Thank you so much for this!! Saved it and will rewatch!

[@yetyanwong2627]

A lot of practical networking

[@davidbombal]

You're welcome! Glad you learned something new 😀

[@sujitradhakrishnan4162]

David, I don't have a timestamp where I learnt something new, that's because I'd list every minute of this video! Thanks so much for what you do, you continue to inspire by staying true to your mission - Educate. Motivate. One of the off-putting aspects of learning computer networks is dragging oneself through tons of theory about things that are abstract, obsolete or both. Your walk through takes out that drudgery. Watching this video had me reliving the early stages of my own career, I remember sitting on a dial-up connection and waiting forever for Cisco learning library docs to download. After all that, I'd never seen one of these devices! It would be terrific to see you put together more such long form videos, they make learning so much more fun. Thanks again!

[@mihkostas1340]

Things i learn from this video: AUI to BNC Transceiver (and in general the AUI port) Ethereal A good example of how a network bridge looks like That a Network tap is hidden from the switch A very good refresh of the things i already know I watch alot of your videos on both youtube and udemy and this video help me understand how many things i have already learn over the years and that a lot of it comes from your content, thanks David.

[@ElminAvdic]

I'm from Germany and we only learn American English at school-but for you, I learnt British English. In every minute of the video, I learned something new. Thank you! Love your Content

[@V1Sha1]

From a student perspective, I could definitely say it's much to see examples like this demonstrated and would prefer to learn like this instead of watching diagram and etc, for the networking topologies.

[@BerniesBastelBude]

that was the best lesson of Ethernet stuff i've ever seen, because it was perfectly explained and showed "hardware evidence" - and all for free! thank you very much, David!

[@davidbombal]

Thank you! Glad you enjoyed it!

[@Nightfire6565]

Thanks David I've been struggling to visualize this for a while books don't do it justice. Keep up the good work.

[@davidbombal]

You're very welcome!

[@jftrembl]

Best networking 101 video I've seen. Made me nostalgic to see those 50 ohms terminators again. Wish I had you as my teacher 30 years ago David! Keep up the amazing work. Take care

[@davidbombal]

Thank you! Glad you enjoyed the video :)

[@jftrembl]

@@davidbombal I really mean it. Now back to trying to consolidate a 50TB VM from a snapshot that's been forgotten for months. Maybe I should become a KZbinr :)

[@todorivanov317]

My god David, I literally was studying for a COMPTIA exam yesterday and was going over network topologies. And i was like "Is there a mistake in the book. How do multiple NICs connect to the same cable." I actually thought that in a BUS topology u used switches or something. Now it makes sense. THANK U !!!

[@beatfrequencyradio6405]

Hi David, even though you are not residing in South Africa anymore you are making me proud to he South African. I really enjoy your content. Or as we would say in South Africa, "lekker content". Well done David!

[@davidbombal]

Baie Dankie 😀

[@beatfrequencyradio6405]

😂​@@davidbombal

[@mikescott3117]

Mr. Bombal This is one of the best videos you have ever made! The way that you utilize visualizations of the devices, helped me understand the total functionality of each device. Moreover, I am a visual learner and most individuals that are KZbinrs in the epic hacking area do not utilize visualizations , as you Have done in this video with the exception of network chunk. as each device was explained, you utilized effects that lit up each device which added to the visualization learning technique that most people are looking for when they are seeking to learn on KZbin channels! Again, I have learned more watching your new techniques, and I have learned in six months of attempting to learn on other channels! Please continue the visualization techniques! Excellent job!

[@CyberDevilSec]

21:58 was actually really mind-blowing to see a bridge as a device. I knew about the hassle with hubs & bridges but i only saw this in theory. Now it makes way more sense why they mention bridged connections so much. Also really cool to see David is starting from the humble beginnings with windows98, i remember using a 98 in elementary when my dad had a windows xp. What a great time line put together within 30 minutes :D Imagine that this was a actual thing not too long ago it is mindboggling to see the progress made from careless devices with insecure protocols like Telnet. Whoever had the idea of encryption with SSH & HTTPS is kudos for them. As always lovely to watch a video of David for a longer period

[@davidbombal]

Thank you!

[@dariusdoku4320]

You make computer networking fascinating. Good content, thank you sir.

[@davidbombal]

Thank you! Glad you enjoy it!

[@kimbjrnjensen2580]

Great to get a compressed Network 101 as a refreshing of learnings from the 1990ies. Well done.

[@blakepennington8394]

Man U R A AWESOME TEACHER!! Thank you for ur videos I watch them all over and over and learn something new each time I need a usb kali breakdown one day or maybe I’m missing one you’ve already done KEEP UP THE AMAZING WORK❤❤❤ 😊😊🎉🎉

[@davidbombal]

Thank you! You are very welcome :)

[@mhlevy]

Congratulations on a fantastic class regarding CSMA-CD technology. Back in the 1980s, I was a field engineer who would occasionally rent an HP TDR (Oscilloscope & signal injector) to troublehoot 10Base5 or 10Broad36 networks before I eventually became an instructor for Novell Networks. Your example is really great, complete with live demo, I've never seen better!

[@cadsticcadsticc1322]

from the start the visualization of the equipment is where I found new stuff, diagrams in books and everything learn is 95% just a line weather its a bus a star of a ring or a mesh ... . it is just lines and seeing it helped me understand what goes with what in which ways. ty

[@knoxsd]

Thanks you for this physical Network topology explanation video using Ethernet Bridge, hub, tap, cables etc. I've learn only network topology logic at the university. Your video always teach new lesson to me. And it's really helps to improve my knowledge, skills.

[@davidbombal]

Glad it was helpful!

[@kwanosutherland9310]

Studied Comptia A+, Network + and CCNA. I dont reach 3 minutes yet but knows this video is going to be very informative.

[@TerryKilpatrick-r4t]

It was great actually seeing a physical bridge. Also seeing the process in the CLI of configuring a spanning session. Great video!!!

[@Kaushik_shivam]

I get much more knowledge from David Bombal channel. It is best to learn from books

[@CalvinCosta-n8u]

David your videos really forces me to study , you are a good teacher . your videos really inform me of stuff I used to ignore or that seemed irrelevant . I can say you are a really good teacher even for me to learn linux it was because of your khali linux installation tutorials 😌😌😌😌

[@Jeck-r9b]

I am new to the networking industry. Thanks for the explanation and not just showing pictures. Much appreciated!

[@davidbombal]

Glad it was helpful!

[@Juliozz3]

It's really cool to see the bus topology (something I've only seen in books) being used with real equipment. I had also never seen a hub in use. It'd be interesting to see the ring topology with real equipment if you haven't made a video like this about it yet. Thanks for making this video!

[@amirchegg]

Great video David! I love how you explain things in great details! Love your channel! Best wishes❤

[@pauljayakar409]

Thank you very much David for the video. It has brought back a lot of memories when I started my IT career in the early 80's. Thank you for taking so much trouble and finding working retro hardware. Since the AC was never adequate in our LAN environments the heat from the PCs would somehow dislodge the BNC connectors at the rear of the cabinet. One had to keep tightening them regularly. 😅. At this juncture I am unable to join your forum. So please excuse. Regards. Paul

[@Kpriyanshu_]

0:50 is where all the things started to be new knowledge for me, even some tools are new to me. For the first time I have seen how things look and work out there in professional scene

[@Jbhhlo]

Wow, this video kind a cleared all my CCNA theory I studied especially the BUS part. Back then it was all pictures. Thanks

[@alaudet]

Interesting perspective to show the evolution of networks. Seeing the old hardware was a blast to the past, but these technologies really did build on one another and the video was a good practical demo of that. Enjoyed it. Seeing the bridge in action was a first for me. I recall going from hubs to switches but don't remember using any bridges although having read about them.

[@davidbombal]

Glad you enjoyed the video :)

[@przeniko]

Love this educational videos. Very well done David. We need more of those in the near future 🔥🔥🔥

[@naimulislam1263]

Now I know how network topology works practically. Thanks David

[@christophergault1903]

VERY INFORMATIVE. i know the basics of how networking works but this gave me a strong grasp of the fundamentals.

[@jod125]

This was very informative, as I'm a moe visual learner and I've always wanted to see physically what I saw in text books at uni. Outlining the meaning of 10Base5 and those kind of small details is also very helpful. Amazing video!

[@yyev89]

Thanks so much, it is really brilliant to see all that devices not just in books, but in real life. Amazing stuff

[@venturousgamer5879]

one of the best video i ever seen which is related to networking make more video like this

[@vignesh_enum_naan]

Your explanations are really good and really useful. From start to end we learned a lot of concepts 👏👏👏 thank you very much for lending your time and efforts ❤

[@garychios]

I have .. Retired fortune 50 systems architect. Watched the video though to learn something as you can always learn.

[@garrywhiting8398]

My first experience of a network was at one of the emergency services where we had 10Base2 as I now understand. I can also see why there were so many upgrades to equipment over the many years that I worked at another employer. I'm always baffled by much of your videos, but learn little bits. They always seem to be very long, but I understand that it's a complicated field. 👍

[@lukeh9199]

Great video. Regardless of what I may or may not have learned, seeing all the hard work you put into this video is impressive.

[@CDHH1972]

I knew some of the information you talk about but you made it more clearly and I also learned some new things thank you David Bombai :)

[@Joe-f1z3h]

2:50 the other drop cable with the tranceiver. imma stop posting for a moment. u were the frst YT IT guy i followed. so ofc ur content is useful to ME lol

[@whatdoyoudo1482]

Ethernet bridge is new to me. Less than one minute. THank you david bombal.

[@MystikMind1]

This really clarifies my understanding of how switches work. Very informative, thanks david

[@willfettu2747]

a lot of this i haven't seen in a long time and/or never seen it but in Textbooks. Thanks for this, plus the neon blue text

[@-Alien_Residents-]

David you are a saint in the network community in my eyes. I see you too. Thank you old boy. Great content.

[@davidbombal]

Thank you :)

[@satishmeghavvarnam1269]

TCP/IP Illustrated Volume 1 Indeed! All of Richard Stevens books are a must for Networking Enthusiasts.

[@carsonjamesiv2512]

MR. Bombal's Videos are ENJOYABLE!👍😃🎉

[@davidbombal]

Glad you like them!

[@Lazllb]

I’m very impressed with the way you explained all these concepts. I actually learned a lot from this simple video. Thank you!

[@davidbombal]

Glad it was helpful!

[@jhajonkman]

Thank you David for this video "along memory lane", perhaps you can indicate here in a video with the difference between, for example, 10base2/5 and "token ring". Because we now use CSMA/CD protocols and "token ring" is an exception to that. But it also has other shortcomings and does not mean that it would be better than Ethernet. The similar protocol that also uses a token is FDDI as far as I know, so it is certainly not a technique of the past. You often see old techniques come back in a new guise.

[@davidb_thetruth]

Love it all @David Bombal the old gear brought back memories 😅

[@RaetselEck]

Great video David, thank you you you are super:) Glad to have more videos about Wireshark and Wazuh.

[@majiddehbi9186]

woow so great it remind me you old videos so instructive i get lot from these videos thx David

[@alandrennan1787]

I just learned about most of this stuff in my CompTIA course this week so it was awesome to see it all layed out practically. Really helped me get my head round it coz I don't know how outdated things are or not. Thanks David! Daily inspiration to get my IT career cooking with gas!! :) (Never seen a bridge. Do they still bother using them?)

[@vabbe71]

This is one of the best video you ever posted David

[@kedMam-k4o]

Thank you Devid for your restless efforts that help a needy one's like me are getting out off problems and still following your educational videos since the day one Begin training under the staff you know and faced problems i claimed and looking for your professional solution help fix all problems.

[@ericnakayama286]

Thank you David for the blast to the past! But to be completely honest I think your talents and efforts would be better served teaching modern day technology and topologies. I appreciate your videos and content!!! I am biased because I have been in networking long enough that I remember a lot of the older technology/topologies and I prefer to learn about newer stuff. I still have and Ethereal book on my bookshelf lol. I actually have some of the older tech you showed in a box somewhere probably in my garage. Keep up the good work! Thank you

[@19FOI30]

I understand how the devices work but hadn't seen them in use. Thanks for this!

[@iblackfeathers]

physical vampire taps were an o.g. technique of hacking and phreaking. basically one could intercept whatever was being transmitted through a cable, depending on context. this included but not limited to landline pots as well as ethernet cables. one preventative measure was to use a system of metal conduit piping to prevent any quick tampering of exposed cables along any publicly accessible areas. this also led to some to look into intercepting transmissions through other means which does not require you to physically cut the cable, such as figuring out how to read the electrical emissions from cables that were not properly shielded, or even the background noise from grounded cables (defcon talk about water pipes or ac ground), and other ways data may be intercepted (van eck, keyboard num lock or scroll lock). in a way, vampire taps have changed to various means of intercepting different kinds of network traffic through physical means. this would be an interesting topic to explore on your channel. the basic concept remains the same but it is applied creatively through other means. sniffing is often taken for granted since a lot of it is done through software now, but the hardware or physical side is less known and would be interesting to explore the possibilities… various techniques of not physically introduced into the network and does not disrupt the connectivity but can monitor it without negotiating an ip address or make itself known.

[@Sprinkles-r5y]

Old school, love it! Wish I had someone from the younger generation here watching this with me so I could watch their mind be blown!

[@davidbombal]

Those logical diagrams just don't make any sense unless you see what the equipment actually looks like 😀

[@777Nardo]

Cool! I've always wanted to see a bridge so thank you. I now have a better understanding of networking

[@fifthamendment1]

16:49 Regarding the hub, could be used as an inexpensive tap to capture and troubleshoot issues on each of the devices connected to the hub? In other words, let’s say Dev1 is having network issues you do not want to install Wireshark on that device. You could connect Dev2 (PC running Wireshark) and Dev1 together using a hub, and then connect to the rest of the LAN. Would that work to capture packets between Dev1 and the LAN?

[@PopkovVasilii]

A very informative video Although not much new, but very well structured and definitely helps understand everything

[@rokkr]

Not even 50 seconds in the video and I learned something new!

[@soal159]

Very informative, this is an excellent breakdown of the different typologies and how they work.

[@davidbombal]

Glad you liked it :)

[@rockthomas67]

Thanks for the memory lane, i glad we dont use it anymore 😀, But I do remeber the time when it was new !

[@davidetl8241]

From start to finish i'v learnt alot, great content! Thank you!

[@parinose6163]

Good day, David. I agree with you on the 'seen' aspect. I definitely learned something. Not only that, I should re-run your video to better grasp the concept of a spanning tree! Until now, due to the book, I had understood that a spanning tree was a device added to a router or a setup that prevents loopback or storm broadcast. If I got you right, we can set it up using the command line. Am I right? Furthermore, where can we find all the equipment shown in the tutorial to build our own lab and test-and actually grab it all?! Or can we use a software bridge, router, or tap? Many Thanks!!!

[@willielewis2548]

Is it possible to start at a help desk with a CompTIA A+ cert then work my way up the ladder at that job? Or should I just get my certs first then look for a career?

[@Miklos9595]

You are great David... I learned so much from your videos... Thks so much.

[@iglooonfire3461]

Great video! Thank you for sharing this interesting look into the different topologies and devices!

[@davidbombal]

Thank you! You're welcome!

[@iglooonfire3461]

​@davidbombal not seen all of them in practice but I've only been in IT for 13 years. I started with dumb switches and layer 2 switches and above. But it's always interesting to see where we've come from!

[@robertscott1224]

Thank you. I can't help but wonder how traffic on a wireless access point is handled by consumer devices? (I do sometimes see a option for wireless isolation)

[@david90210ca]

Great review for me, always need to keep old information fresh.

[@MagraeMagraed]

very good video, everything you teach in it, I have never seen it this way, thank you very much for teaching us all this knowledge that in schools they do not teach us in a practical way, they only show it in a theoretical way and that way it is more difficult to understand how it works, but now with your video it is easier to understand it, thank you very much and continue teaching us more of everything you know, we thank you in advance for the knowledge you give us, have a good day. 😊

[@raportmercado1165]

you brought me back to the past, using 10base2 installing novell 3.12 servers all over the country.

[@petcuvalentin4877]

Thks David for all the videos that you makes

[@davidbombal]

You're welcome!

[@rami.0092]

I would love to see more content like this one Sir. I appreciate yours.

[@alexandredubois2875]

Bonsoir David Good evening DAVID thank you a thousand times over for this superb video. I'm happy to follow you and your videos, especially this one, are a source of learning and motivation that encourage even more curiosity. I'm also taking the opportunity to learn English, as I'm not very good at understanding your language. But your accent is very, very understandable for a French person like me. thank you a thousand times

[@davidbombal]

You are very welcome! Thank you :)

[@AbaidCh]

Amazing to see these old guys in a real lab. Till today it was just a theory. 👏👏👏 Bravo, David!

[@davidbombal]

Thank you! Glad you enjoyed the video 😀

[@Joe-f1z3h]

So with the bus topology and the star topology, all machines or hosts receive the signals. Is it because they're broadcasting? 14:13

[@sassywoocooo]

Hi dad. i just wanted to tell you that i really like this format of videos you're doing. I feel like we can focus more when youre the only one in the video and telling us the details.

[@davidbombal]

Thank you for sharing this. I'm going to create move videos like this 😀

[@sassywoocooo]

@@davidbombal thank you so much dad. I hope you have a nice day

[@dolgacevairina69]

If it's intended as a newbie/introduction content, it's still very hard to comprehand. Very cool though. Perhabs you can make a video about basics on a simpler level, like starting from explaining a modern home router in simple terms.

[@quixy_gaming398]

Really helpful for me, more videos like this!!

[@notoriouslinux]

you are my hero teacher on the net since 2020 pandemic thank you David have a good day 😊

[@davidbombal]

Thank you :)

[@KyleRice]

This is an awesome Video. I have only heard about this described but never was it shown

[@davidbombal]

Glad you enjoyed it!

[@MohamadNaameh]

Hello David, can you please tell us where can find the Nic and the cable 😊 thanks

[@humblethunder]

Thanks David I love these more technical videos

[@davidbombal]

Glad you enjoyed the video :)

[@theuniverse8948]

Thank David I am preparing for gate exam which consists computer network subject you just cleared my most of the doubts

[@Nerzhina]

Hi David. I’m unemployed & trying to get a job in IT / cyber security or network security. I have never worked in IT or cyber security. My previous job had nothing to do with IT. I don’t want to work in IT Help Desk because that aspect of IT does not pay well & doesn’t interest me. My goal is to be self employed & work remotely in cyber security. I’m currently studying the CEH by EC-Council. Could you please recommend a cyber security course from your syllabus which would benefit me. Are your cyber security courses accredited & with what governing body? I’m more interested in an entry level qualification that would help me get a job as a junior SOC analyst / penetration tester. Your videos about cyber security & network security are inspiring & educational. Thank you, best wishes.

[@MyLifeNavigation]

Awesome video! many thanks for this high quality content. Could you suggest for home lab which Cisco switch I should go with for practise (under budget)?

[@kurtpasewaldt]

Brings back my nightmare of a CCIE lab practical whereby the test could of consist of the following: DECNET, AppleTalk, SNA, Token Ring, X.25, frame Relay, BRI, ISDN, and Ethernet to name a few.

[@stephanschexnayder4098]

The entire video was very informational.

[@gr8pr4mr]

Wow. I learned a lot from that. I now realise why i have the network slowimg down after a hub connector. I use a asus router that looks similar to the router you held up at the end (4 switch connections and a routed connection) that I would like to understand (how to use) better. Are you comg to do a part 2 to cover routers, or have you already covered routers somewhere else?

[@RainbowKick2000]

bros like a teacher maybe he should stuck doing this for the rest of his life and infact i learned hacking sometimes of him not only from other hacking youtubers but him also too but please make a video about Osintgram thank you David