Port Numbers Explained | Cisco CCNA 200-301

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  • Опубліковано 2 січ 2025

КОМЕНТАРІ • 317

  • @user-or7ji5hv8y
    @user-or7ji5hv8y 4 роки тому +246

    Wow, I don’t know why others can’t explain this basic idea clearly. Thank you.

  • @dandele123
    @dandele123 4 роки тому +83

    Letting you know that I passed my CCNA 200-301 this week and your videos helped me do it! Thank you!

    • @Certbros
      @Certbros  4 роки тому +13

      Congratulations!! These are the comments I love the most!! Nice work 👍

    • @radtzerthecommanda8523
      @radtzerthecommanda8523 Рік тому

      I just begun my course with cisco so i will be a tier 2 engineer

  • @bwood6337
    @bwood6337 3 роки тому +14

    Thanks!
    Everyone else only explained how ports are used without getting into what they actually are or how they operate which made it a lot harder to really wrap my head around them.
    You provided a really great balance of explaining that without getting overly complicated.

  • @christinalahey327
    @christinalahey327 4 роки тому +96

    Thank you! My teacher has made port numbers sound like something that one can only understand with multiple doctorates

    • @Certbros
      @Certbros  4 роки тому +6

      Thanks Christina! Great to hear the video helped you out. Port numbers are pretty simple once you get your head around it.

    • @MathoAvito
      @MathoAvito 2 роки тому +1

      LOL. true story!

    • @asit3061
      @asit3061 2 роки тому

      🤣🤣

    • @becks3six9
      @becks3six9 Рік тому

      🤣🤣🤣🤣🤣 comment is so underrated

  • @berbid9051
    @berbid9051 3 роки тому +2

    Never heard this simple yet comprehensive explanation in any of my computer classes in university.
    Thanks for this great video

  • @thelowertimeframes1442
    @thelowertimeframes1442 4 роки тому +20

    Yes! Port numbers, came at a a great time. If you guys would make a video on Cryptography or Encryption, it would be too great!

    • @Certbros
      @Certbros  4 роки тому +12

      Thanks Ron. Glad the video helped. Good suggestion. I plan on making some security videos in the future. 👍

  • @fudoshin2776
    @fudoshin2776 4 роки тому +16

    THANK YOU SO MUCH!!!! I was struggling with Ports but you just explained it so easily. Thanks again 🙏 💕

    • @Certbros
      @Certbros  4 роки тому +1

      You're welcome! Great to hear it helped 👍Let me know if you have any questions.

    • @flamey4446
      @flamey4446 3 роки тому

      @@Certbros thanks now I can boot people yay🤟🤟

  • @Malitubee
    @Malitubee 8 місяців тому

    Bro literally why can’t anyone else just explain it just as easy as you did ! You made this click instantly ,it felt like everyone else was speaking a completely different language

  • @MathoAvito
    @MathoAvito 2 роки тому

    Thank you so much for the great explanation!
    The best sentence in this video was "IP address gets the data to the computer, but it's the port number that gets the right application"
    Wrote it down for myself.

  • @JoseRuiz-mf8zb
    @JoseRuiz-mf8zb Рік тому

    This video made my life so much easier, I just spent a whole semester of just reading and reading and reading, and I literally learned more in this video than the whole semester

  • @conorbase7776
    @conorbase7776 3 роки тому +4

    This is a really informative and fruitful video. I nearly took notes for every sentence in the video.

    • @Certbros
      @Certbros  3 роки тому

      Thank you Conor! Glad I could help!

  • @tanzeelazam9552
    @tanzeelazam9552 4 роки тому +4

    You truly deserve more likes and views. Arigato!!!

    • @Certbros
      @Certbros  4 роки тому +1

      Thanks Tanzeel! Great to hear you liked the video 👍

  • @tokinabo
    @tokinabo 3 роки тому

    wow, a clear nice voice, at digestible pace, with in depth detailed and yet simple explanation!
    hard to come across those days..

  • @rishithilak2627
    @rishithilak2627 Рік тому

    sir you are the perfect teacher ever i have seen you giving an every real time example for each topic this makes me practically strong.loved your teaching

  • @1leggeddog
    @1leggeddog 3 роки тому +1

    I've been in IT for 20 years and I still learned something from this.
    Never did get my ccna certificate, i just had to learn as I went after college

    • @a.batorsky
      @a.batorsky 25 днів тому

      Me too been in IT for 24 years and I still learned something from this.

  • @mofojackson
    @mofojackson 3 роки тому +3

    Just saw your excellent video explaining TCP UDP and was going to ask if there was one on ports when this auto played haha. Awesome and exactly what I was wanting to know next

    • @Certbros
      @Certbros  3 роки тому

      Great to hear! IP Addresses next 👍

  • @Randumb96
    @Randumb96 Рік тому

    These videos have really helped me wrap my head around so many networking concepts

  • @moneymaker3400
    @moneymaker3400 2 роки тому +1

    Best video for this concept in the whole UA-cam.....love you guys❤️

  • @denisewray4776
    @denisewray4776 4 роки тому +1

    Thank you, your video took the confusion out of understanding what Ports are and how they work.

    • @Certbros
      @Certbros  4 роки тому

      Thanks Denise! Great to hear it helped.

  • @saltech2024
    @saltech2024 3 роки тому +1

    OMG!!
    Some tutorials are just too short but they explained everything you're looking for
    Thank you very much

    • @Certbros
      @Certbros  3 роки тому

      Thank you Ibrahim! Really great to hear you liked the video.
      Good luck with everything.

  • @amenforthy2213
    @amenforthy2213 4 роки тому +9

    could you please do an updated tutorial about STP ?
    btw great way of explaining new concepts to beginners !!

    • @Certbros
      @Certbros  4 роки тому +1

      Thanks Amen! I appreciate the support.
      STP will be updated in the full course. It will have the same information it will just look and sound better.

    • @thelowertimeframes1442
      @thelowertimeframes1442 4 роки тому +1

      @@Certbros Looking forward to it

  • @mehdiroudeau8809
    @mehdiroudeau8809 Рік тому +1

    i am from france and I still understand your explanation better than my own teacher thanks a lot m8

  • @thatguyluffy4941
    @thatguyluffy4941 3 роки тому +2

    Crystal clear on the basics ! good explanation with the figures

  • @andrewdelave
    @andrewdelave 3 роки тому +1

    This was the best explanation I've come across by far. Thank you!

    • @Certbros
      @Certbros  3 роки тому

      Thanks Andrew! Glad it was helpful 👍

  • @ljg3794
    @ljg3794 4 роки тому +2

    Simple but intuitive and powerful explanation! thank you!

    • @Certbros
      @Certbros  4 роки тому +1

      That's really great to hear! Thanks for the comment. Glad you liked it.

  • @techanalogies2629
    @techanalogies2629 3 роки тому

    Great Video. Understood so much in few minutes rather than searching on the web for hours

    • @Certbros
      @Certbros  3 роки тому

      Great to hear it helped! Thank you.

  • @mithun1247
    @mithun1247 3 роки тому +1

    Thanks bro, your way of explaining these complex topics is the best. I learnt a lot from you. Thanks a lot. You earned a new subscriber

    • @Certbros
      @Certbros  3 роки тому

      Thank you Mithun! Happy to help 👍 Welcome to the channel.

  • @ruixue6955
    @ruixue6955 2 роки тому

    0:27 layer 4 - transport
    0:32 also responsible for choosing *port number*
    0:41 why port number is needed

  • @89ulfr
    @89ulfr 3 роки тому +1

    Best explanation I've heard on this topic...Thumbs up!

    • @Certbros
      @Certbros  3 роки тому

      Thank you! Really glad to hear this 🙏

  • @TeamEnneser
    @TeamEnneser 3 роки тому +1

    You nailed it. A neat presentation.

  • @keerthanaa7740
    @keerthanaa7740 3 роки тому +1

    Super... I just tried netstat command got information in details .. Thanks you so much..

    • @Certbros
      @Certbros  3 роки тому

      Great to hear! Glad you liked the video!

  • @itaybarok9405
    @itaybarok9405 3 роки тому +1

    I understood the idea of giving a random port to the source because the port is used in the reply.
    Thanks.
    Also, I learned some new ports yet I would love to hear from you kore deeply about the 12 famus ports you showed because you did not go over all of them and you did not put enough information in each so I would like to hear more from it.
    However, wonderful video I learned from you in this video some important concepts and it sharped my knowledge.

    • @Certbros
      @Certbros  3 роки тому

      Thanks for the feedback and I'm glad you liked the video.

  • @VictoriaOtunsha
    @VictoriaOtunsha 2 роки тому +1

    Thank you for the simplification in the explanation.

    • @Certbros
      @Certbros  2 роки тому

      No problem at all. Glad you liked it Ogiri 😀

  • @volcanoab4419
    @volcanoab4419 3 роки тому +1

    Brilliant ... absolutely the best!!

  • @lawlietnao_music
    @lawlietnao_music 4 роки тому +4

    Beautiful explanation, thank you so much for your hard work!

    • @Certbros
      @Certbros  4 роки тому

      You're welcome! Thanks for the comment 👍

  • @batista98854
    @batista98854 2 роки тому

    Wow finally now i understood why a port is required

  • @manaraljadani6309
    @manaraljadani6309 3 роки тому +1

    You made it much easier to understand. Thank you so much

    • @Certbros
      @Certbros  3 роки тому +1

      Glad to hear it! 👌

  • @shaahithahamadh4385
    @shaahithahamadh4385 4 роки тому +1

    Crystal Clear Explanation 👍 Thank You.

  • @itsjankiinenglish271
    @itsjankiinenglish271 4 роки тому +2

    This is an excellent video!!! OMG it helped me A LOT!!! to understand Ports numbers!!

    • @Certbros
      @Certbros  4 роки тому +1

      That's really great to hear! Glad you it helped you out 👍

  • @gardelrio9961
    @gardelrio9961 3 роки тому +1

    Excellent explanation of ports.

  • @ARMOTISARMOTIS
    @ARMOTISARMOTIS Рік тому

    I really enjoy and learn well from your videos . Watching your videos is great. :)) Thank you!

  • @mrgigs08
    @mrgigs08 3 роки тому +1

    I absolutely like your explanation guys! Keep on doing an amazing job!

  • @itaybarok9405
    @itaybarok9405 3 роки тому +1

    Continue posting videos that this. You are a great teacher

  • @gajlaxmitrader
    @gajlaxmitrader 3 роки тому

    You are simply awesome yaar
    Wow.. i mean nobody explain like this simple way

  • @micknimm-ne4ef
    @micknimm-ne4ef Рік тому

    you make it seem so much easier.

  • @agyeirichmondowusu9670
    @agyeirichmondowusu9670 2 роки тому

    Your explanations and examples are the best

  • @trevorkubonga1140
    @trevorkubonga1140 Рік тому

    Hie thanks for a great review, im attempting to transition fro the construction industry into IT and i go introduced to the cisco skills for all program. I wasnt sure about its value but listening to this review has encouraged me a lot. My goal is cybersecurity and im not sure if i should leave the networking and focus on the security or i should run with both.

  • @srinis9801
    @srinis9801 3 роки тому

    The videos from cetbros are really tremendous. The most of the topics the way you explained was awesome. The people will love and start learning who doesn't have idea or interest in Networking !!! . We are really awaiting for more tech videos !!! Appreciate your great works

  • @NJhansisri
    @NJhansisri 2 роки тому

    After a long time my doubt got cleared 😀😀

  • @evavincel27
    @evavincel27 Рік тому

    Ačiū!

    • @Certbros
      @Certbros  Рік тому

      Thank you very much! Glad you liked the video!

  • @lilianapatarroyo6432
    @lilianapatarroyo6432 3 роки тому +1

    Thank you! You explained so clearly.

  • @ReflexRL
    @ReflexRL 4 роки тому +6

    After running netstat -n and viewing the listed connections, is there a way to find out what each connection is? I would like to know what each of the connections are that are showing on my computer :)
    Also huge thanks for the incredible and easy to understand content!💙 10/10🙌🏼

    • @Certbros
      @Certbros  4 роки тому +10

      If you run netstat -no it will show you the process ID (PID). You can then check the PID in task manager or use the command tasklist.
      Great to hear you liked the video!

    • @subithacs8274
      @subithacs8274 3 роки тому

      @@Certbros Thank you, it helps!

  • @cathydowns5442
    @cathydowns5442 3 роки тому

    Einfach wunderbar erklärt! Danke...

  • @raamch
    @raamch 3 роки тому

    Lot of useful and helpful information about port numbers. Thank you so much!

  • @iyanlaksanaputra8212
    @iyanlaksanaputra8212 Рік тому

    That practice using powercell is so helpfull, i am newbie and i need more practical like this, especially when explaining about tcp/ip model, would like to know what exactly is happening inside the computer during encapsulating and decapsulating data from application layer up to physical layer. Or maybe explain in some 3rd party software like wireshark.

  • @msreddykotha5498
    @msreddykotha5498 4 роки тому +1

    very crisp and spot-on, love your videos. Could you please make a video on Virtualization.

    • @Certbros
      @Certbros  4 роки тому

      Thanks! Great to hear you liked it. Yes, virtualization is on my to-do list 👍

  • @sedikis.dolley3963
    @sedikis.dolley3963 2 роки тому

    Wow. Brilliantly explained

  • @shrutijain4126
    @shrutijain4126 Рік тому

    Great work... Loved it ❤️

  • @sgtweeniearms7055
    @sgtweeniearms7055 3 роки тому +4

    great explanation, my professor doesn't actually teach anything and tells us to just read the material on netacad. Ive been lost since the second week. your videos have helped me get some clarity from what i have been reading.

    • @Certbros
      @Certbros  3 роки тому

      Glad these videos are helping 👍 Sorry to hear your professor isn't much help.

  • @sibusisosiyabongandaba698
    @sibusisosiyabongandaba698 2 роки тому

    This is so clear, i liked and subscribed right away :-)

  • @RBASB10
    @RBASB10 3 роки тому

    OMG! That was extremely informative. The person explanation was on point. Even the most stupid Person in the world could understand that intel. Thank you kindly Mr 🙏🏻

  • @SHUBHLAABHKITCHENRECEIPES
    @SHUBHLAABHKITCHENRECEIPES Рік тому

    Thanks for making such videos man, 👍
    It's helpful alot

  • @kaidjohardudhiawala2549
    @kaidjohardudhiawala2549 3 роки тому

    Superbly explained ,Thank you

  • @bpd-ke6bs
    @bpd-ke6bs 4 роки тому +1

    Thank you for making such great videos

    • @Certbros
      @Certbros  4 роки тому

      No problem. Glad you like them!

  • @krishnabugudi2512
    @krishnabugudi2512 3 роки тому +1

    Thank you sir. You have been great help 🆘

    • @Certbros
      @Certbros  3 роки тому

      No problem at all. Glad to hear it!

  • @MyChannel706
    @MyChannel706 4 роки тому +1

    Excellent explanation!

  • @luckyplay9919
    @luckyplay9919 2 роки тому

    This was so helpful!! Thank you

  • @איתיאשכנזי-ש2ד
    @איתיאשכנזי-ש2ד 3 роки тому

    Thank you! Helped me so muc with my homework

  • @MccZerk
    @MccZerk 2 роки тому

    Great video. but at 7:10 I think you meant the CLIENT is not sending the request to the web application port, not the SERVER.

  • @jeevansantosh686
    @jeevansantosh686 3 роки тому +1

    You're a life saver..

  • @robpickles3736
    @robpickles3736 9 місяців тому

    I f'ing love CertBros!

  • @buzingaaaa
    @buzingaaaa 2 роки тому

    Thanks for the explanation that's so helpful ❤️

  • @edwardlara1011
    @edwardlara1011 6 місяців тому

    Excellent layout, delivery, and explanation of material. Only problem I have is with the british accent, but I struggle with all types of accents.
    I totally cannot grasp concepts from asian, Indian, arab, french, german, and spanish accents.
    But I improviced and overcame this by reading the video scripts after the video. This method of learning complex concepts is the best of all methods of learning.

  • @johnconnor9787
    @johnconnor9787 4 роки тому +1

    Awesome channel! Definitely thumb up!

  • @yassanhassanpour1442
    @yassanhassanpour1442 3 роки тому +1

    great explanation and motion graphic. tnx

  • @facundonieto1598
    @facundonieto1598 2 місяці тому

    3:27 puse like porque se entiende por qué el navegador web despliega la respuesta del servidor en la ventana correcta (debido al numero random de puerto que se creó cuando se hizo la request... ese mismo puerto usó el servidor para direccionar su respuesta al cliente -computadora donde se está usando el navegador web-)
    5:25 uso de netstat -n en el cmd de windows

  • @lynxoffinland
    @lynxoffinland 4 роки тому +1

    a very helpful and informative video! Thankyou for educating me.

    • @Certbros
      @Certbros  4 роки тому

      You're welcome. Glad it was helpful!

  • @zyghom
    @zyghom Рік тому

    "wrong": your house address is your IP, your name on the letter is your port because you can have many people living under this address.
    Or, if instead of house if it is a block of flats: house number is an IP, room number is the port. But then we need also a "sub port number" for the names of people living in this room ;-)

  • @usernotfound1044
    @usernotfound1044 4 роки тому +1

    Thank you!

    • @Certbros
      @Certbros  4 роки тому

      That's great to hear! Glad you got some value from this.

  • @raulsanchez4716
    @raulsanchez4716 3 роки тому

    Wow! This was an awesome video. Learned so much.

  • @brokencranium
    @brokencranium 4 роки тому +1

    Thanks! Great explanation!

    • @Certbros
      @Certbros  4 роки тому

      Thanks! Appreciate the comment 👍

  • @akamani8980
    @akamani8980 3 роки тому +3

    Port 80 is my favorite 😂

  • @factswithai2
    @factswithai2 3 роки тому

    great explanation, thanks for such good content

  • @TheMrjpb
    @TheMrjpb Рік тому

    Please correct me if I’m wrong. But my understanding of this is that port numbers are assigned to services or protocols so when we the client reach out to a server, that server knows, because of the port number, which protocol to use while we’re communicating?

  • @mihailomarcetic2516
    @mihailomarcetic2516 3 роки тому

    Great Explanation !!

  • @ahilshaik8083
    @ahilshaik8083 3 роки тому +1

    awesome man ...keep going

  • @chiromorilla7448
    @chiromorilla7448 3 роки тому

    Learning now for my CCNA cert

  • @JaimeCB23
    @JaimeCB23 4 роки тому +1

    Amazing videos and thanks for had shared with us

    • @Certbros
      @Certbros  4 роки тому

      Thanks Jaime! No problem, glad you liked it.

  • @shubhamsharma14
    @shubhamsharma14 3 роки тому +1

    Great tutorial......just one question, what if multiple host are requesting connection for port 80 ?? how multiple host will connect to that server?

    • @Certbros
      @Certbros  3 роки тому

      Thank you Shubham. Thousands of hosts could connect to the same server on port 80 at the same time. It's the source port and IP address that allows the traffic to be uniquely identified.

    • @shubhamsharma14
      @shubhamsharma14 3 роки тому

      @@Certbros Thank you, appreciate your quick response !

  • @roswithadusa8673
    @roswithadusa8673 2 роки тому

    very good video,which programm you use at timeline 4:32?

  • @rohullahhussaini3351
    @rohullahhussaini3351 2 роки тому

    made it so simple, thanks

  • @1juan1234
    @1juan1234 3 роки тому

    Awesome video amigo , thank you 🙏🏼🙏🏼🙏🏼🙏🏼

  • @yuikana2548
    @yuikana2548 2 роки тому

    Thanks you! Still extremely helpful these days
    - from 2022

  • @04chavez
    @04chavez 3 роки тому +1

    Thanks for the video 🤠

    • @Certbros
      @Certbros  3 роки тому

      No problem 👍 Glad you liked it!

  • @zenrobotninja
    @zenrobotninja 3 роки тому

    Great explanation!

  • @mohamedashik5374
    @mohamedashik5374 2 роки тому

    Thank you very much good explanation 💯

  • @lukakavteli9441
    @lukakavteli9441 4 роки тому +1

    how does this channel have only 50k subscribers

  • @tato2493528
    @tato2493528 2 роки тому

    damn, what a clear explanation. ty

  • @boltez6507
    @boltez6507 3 роки тому +2

    You are amazing...

    • @Certbros
      @Certbros  3 роки тому

      No! You're amazing!

  • @randyallen8186
    @randyallen8186 4 роки тому +1

    Awesome! Thank you!