What is DNS? Introduction to Domain Name System. SXSW giveaway!
ฝัง
- เผยแพร่เมื่อ 15 พ.ค. 2024
- Fasthosts Techie Test competition is now closed! Learn more about Fasthosts here: www.fasthosts.co.uk/davidbombal
What is DNS (Domain Name System)? How does DNS actually work? This video shows you practical examples of DNS in real time and includes Wireshark captures showing you actual DNS query and answer messages.
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Giveaways:
======================
SXSW Trip: www.fasthosts.co.uk/davidbombal
Wireshark Course: See hidden link in video
SDN Course: See hidden link in video
Linux Course: See hidden link in video
======================
Menu:
======================
What does DNS do? 00:00
Why do we use DNS? 2:10
Analogy of DNS: 4:00
SXSW: 5:25
Practical DNS: 7:30
Lab: 8:20
Wireshark capture of DNS: 9:50
Edit Windows host file: 15:45
Use a Cisco router as a DNS server: 18:22
nslookup IPv4 / IPv6: 23:09
Rogue DNS example: 24:35
Ubuntu DNS server setup (dnsmasq): 25:47
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CCNA content:
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Free CCNA content: • Packet Tracer: CCNA Ex...
CCNA course: bit.ly/2PmTVPD
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Dnsmasq setup:
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sudo systemctl disable systemd-resolved
sudo systemctl stop systemd-resolved
Edit the /etc/resolv.conf file to contain the following entry:
nameserver 8.8.8.8
Now install dnsmasq
sudo apt install dnsmasq
uncomment these lines:
port=53
domain-needed
bogus-priv
no-resolv
Add your domains below the no-resolv line:
address=/r1.home.com/10.1.1.254
address=/myrouter.home.com/10.1.1.254
Set your public server to Google for example:
server=8.8.8.8
DNS
DHCP
EVE-NG
GNS3
VIRL
Packet Tracer
10x Engineer
CCNA
Cisco Devnet Associate
CCNP Enterprise
CCNP Security
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CCNP Service Provider
CCNP Collaboration
Cisco Certified Devnet Professional
Cisco Certified Network Professional
LPIC 1
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Linux Professional Institute
LX0-103
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XK0-004
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!
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#dns #sxsw #wireshark - วิทยาศาสตร์และเทคโนโลยี
Very informative! I appreciate your understanding that some people are just getting into this topic and taking the time to explain how the little things come into play
Thanks for the informative DNS subject material as well as being super polite
Very useful video! Seeing how this process is captured on wireshark clarified the whole process for me. Thank you.
Great way to begin the new year, congrats for continuing with the giveaways, is a good way to keep us motivated and continuing learning.
Thank you! Appreciate the support.
Menu:
What does DNS do? 00:00
Why do we use DNS? 2:10
Analogy of DNS: 4:00
SXSW: 5:25
Practical DNS: 7:30
Lab: 8:20
Wireshark capture of DNS: 9:50
Edit Windows host file: 15:45
Use a Cisco router as a DNS server: 18:22
nslookup IPv4 / IPv6: 23:09
Rogue DNS example: 24:35
Ubuntu DNS server setup (dnsmasq): 25:47
======================
Giveaways:
======================
SXSW Trip: www.fasthosts.co.uk/davidbombal
Wireshark Course: See hidden link in video
SDN Course: See hidden link in video
Linux Course: See hidden link in video
======================
CCNA content:
======================
Free CCNA content: th-cam.com/play/PLhfrWIlLOoKM3niunUBTLjOR4gMt_uR_a.html
======================
Dnsmasq setup:
======================
sudo systemctl disable systemd-resolved
sudo systemctl stop systemd-resolved
#Option 1: Edit the /etc/resolv.conf file to contain the following entry:
nameserver 8.8.8.8
#Option 2:
sudo rm /etc/resolv.conf
echo "nameserver 8.8.8.8" > /etc/resolv.conf
#Now install dnsmasq
sudo apt install dnsmasq
#uncomment these lines:
port=53
domain-needed
bogus-priv
no-resolv
#Add your domains below the no-resolv line:
address=/r1.home.com/10.1.1.254
address=/myrouter.home.com/10.1.1.254
#Set your public server to Google for example:
server=8.8.8.8
Thanks David for another great video! Good job!
Thank you very much for this content. I've been looking for a good DNS tutorial for a while now!
Thank you! Hope you learn something new :)
OMG thank you so much for the giveaway!!! I Cant believe you are giving away your Linux and Wireshark course!
Enjoy the courses Paulo!
When nothing in life works, just listening to your videos restore hope
Your content is very good and informative. Thank you so much.
Excellent David, kept pretty general highlighting the important things. Thanks again for the great information, and regarding the sponsorship of companies for your videos, of course I believe it's a win win for everyone 👍 have a great day and until then.
Thank Jair
Thank you so much David i have got all three courses however last month I purchased your SDN tutorials from Udemy but still got Linux and wireshark free.
I am so happy...thanks David
I wish you get more sponsors
Thank you for the support Lokesh
Great video, thank you! I really need to get GNS3 one of these days. It looks so much more robust than packet tracer.
Thanks again for another great video David
I got all the 3 free courses, thank you David for the new learning materials, have a nice week 💙.
Congratulations! Enjoy!
Thanks for the courses and the explanation! very clear David! :D
Thank you Santiago
Thank you very much for the course. Pro David
Wow, this is fantastic info! Thanks David!
Thank you Kevin
Greetings from the North Caucasus. Thank you very much for your eloquent tutorials.
Absolutely as you have the knack how to explain and teach this stuff
Best Explanation that i ever seen about DNS👏..Thank You
Thank you
Got more than I bargained for, thanks for building the content.
Really happy to hear that Big Ric.
You are a great man ! your TH-cam channel is the most valuable in IT
Thank you! Appreciate that compliment!
Thanks for sharing this valuable information. Everyday we learn more from you
Thank you. Glad you learned something :)
Excellent explanation, thank you!
Yesss, continue with it!
Great to see you getting the support of sponsers, David. And so long as they're meeting your standards (ie high quality/no scammers) then it can only be a positive thing, imo!
Thank you John - appreciate the feedback. Been a long journey, but glad it is happening now. One of these days it will be your turn :)
@@davidbombal Haha! That would be nice. Got a loooong way to go but I'm enjoying the journey. Your channel is the gold standard so it's encouraging to see high quality content get rewarded over clickbait. Seems like it was only a month ago you were at 100K and now it's almost 150. You'll be at a million within 18 months at this rate haha.
@@IPvZero Appreciate that John! Don't give up - keep hitting publish :)
Absolutely 👍
Should we go to SXSW, David??? ;)
lol... not until I have reached my goals!
Hey NetworkChuck, thank you for your videos too...
@@davidbombal what is your goals??
Scam site illegal.
@@gbadri1 Well, if David watches Network Chuck, he is doing nothing. absolutely nothing :)
Great Video helped me solve many doubts.
Your an excellent orator bro.. ty
Hello David Bombal I just finished my degree in Computer Engineering I am 27 and I want to start my journey on networking industry, where should I start Python or CCNA ?
Keep your fantastic work! cheers
Thank you David that was good)
Thanks David, your videos has always great details, although I know the topic 😃
Thank you Søren! Appreciate the support 😀
Thanks for the video David.
Thank you for the continued support G G
Great tutorial/explanation! 👍
Thank you Orley
Thank you so much David!
Thank you for watching Michael
Thank you David! Great!
Thank you
First of all I wanna thank you for all of your videos you provide a lot of valuable information to us.
And I wanna ask a question that for beginner which one is better GNS3 Or EVENG to start for better understanding not for just clear the exam.
Thank you. Both are good and both have advantages and disadvantages. However, if you are new to networking, I would suggest you start with Cisco Packet Tracer - free, easy to use.
Great Video David. Love from India 🇮🇳
You can teach and clear concepts really good waiting for you ccnp r and s labs .
Thank you!
Great video thanks a lot
Thanks for the video , pls tell how do I configure dns server on my router ?
Should I use ip name server (server ip address) or if I want to use independent dns server in my network, then how to configure my router? Pls tell @David sir
Amazing video…very indepth
Thanks so much for giveway!
Thank you 👌
Yo definitely deserve more promos on this channel 👍
Thank you!
Very informative and well explained video 👍👍
Thank you
Thanks a lot!
UDP is used by Dynamic Name Systems as their base of communication
Thank you.
That's awesome, I won free course " Linux" ohhh Thank you @David Bombal
Great! Enjoy Yaser!
you are amazing
Thank you.. very beautiful 👌 video
Thank you Asral
What are forward and reverse lookup zones ?
Thank you David for SDN give away
I hope you enjoy the course!
Yep, David I always enjoy your courses. Keep on doing the good work
Thank you
can you have a proposed solution for the protection of a DNS server?
Hi. David. All your videos are very helpful. Im interested to buy CCNA training you offer above and just wondering if they are same training offered in Udemy and I have it already. Thanks again
My CCNA training courses are on Udemy, so if you have purchased the courses there, don't purchase from somewhere else.
Thanks David ..👍
Thank you for watching Rahul
thanks for the free courses
Enjoy the courses Mohammed. Hope you learn a lot.
@@davidbombal Sure , Appreciated
3:37 is it google choose nearest data center to us when we request e.g youtube ?
May I please know why ospf use ttl 1 whereas rip and eigrp use ttl 2.
Wow David that's cool technology..
Thank you Ace. You like the Alexa integration?
My computer doesn't talk back to me wish my miss was the same lol David..
@@nemesisshadowlord2026 lol... yes... not sure I like it that Alexa is listening all the time however :(
Yes
Can I do nslookup with a Google Home too?
The picture at the beginning has bus no. 53, what a coincidence. 🙂
53 ports we will use for dbs
What software do you use to draw the topology ?
GNS3
Did they end up actually holding SxSW ?
My first thought at reading the title was "Usually the problem".
lol... great comment
Please sir May we wait the course about CCNP enterprise ?
I am slower than others. First I need to publish CCNA.
Great Video David - can we chat soon
Resolving operatic ulnar domain name to address
Ya no laka boet great content!!!!
Baie Dankie!
just ossom
UK only ?
The SXSW giveaway is only open to UK residents unfortunately, but the free courses are open to anyone (but limited numbers).
I give answer but "Invalid Captcha Response." message is coming
Are you based in the UK? Unfortunately the main giveaway is only open to UK residents.
I guess the prize giveaways are good for your viewers..
Yes, a lot of people like the courses and I'm sure someone will have a fantastic time at SXSW!
brb sending this to FB engineers
It is DNS!
the answer is DNS
The answer your question is DNS
Hey buddy. You speak faster than what you show in Wireshark. Try to make it concurrent.
bruxaria
David, pls note that TH-cam has already have lots of ad before the video. Advertising a sponsor is good for you, however it would make boring to watch the videos 😊
Thank you for the feedback Metin.
DNS
not for laymen. Too fast for me. I feel like a chameleon on a smartie box. But thank you, i think. I understood the 1st 2 minutes.
me being in Asia 😭😭😭
Yes... pity that this is only for UK residents 😥 But, did you try to win a free course?
do sponsers you need to have more money to give more knowldge to the world
why can't you simplify this?
Please continue sponsored videos and giveaways! Everyone wins if possible just provide the PROS and CONS of the product.
Thank you Mariem
its man in middle you pay for
this is bad i liked your previous videos before the holidays they were useful to the point entertaining and i learn from them or review some information a half an hour video and i watched 6 minutes of nothing sorry but you were better before
Sorry to hear that Mostafa. Did you see the menu below the video that shows topics so you can jump to topics of interest? I go deep into the technical content from 8:20
AAAA record
DNS
DNS