Multicast DNS Explained

In this video I discuss multicast DNS. Wikipedia defines multicast dns In computer networking, the multicast DNS (mDNS) protocol resolves hostnames to IP addresses within small networks that do not include a local name server. 

0:00 Intro
0:30 DNS Explained in LAN
4:00 Multicast DNS

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Hussein

[zachharmon]

Thank you sir. Been doing IT for a bit but never formally trained. You're helping me fill in the gaps.

[noweare]

Never could picture how mDNS works or what was the advantage of it. This gives me the birds eye view. Thank you.

[dwillingham]

Love this. You have a great way of explaining things! Thank you!

[FriggnHters]

Very entertaining way of explaining MDNS, thanks!

[opastx]

Great exposition Nasser! It was usefull for my job about this protocol in my Spanish's University. Thanks a lot!

[gregthwuen]

Thanks for the vid! This was just the explanation I needed after trying to wrap my head around it for hours 😅

[kfash]

mDNS is very useful when you are using VLANs and have IoT devices like chromecast in different VLAN

[syedsafdarali]

Great explanation bro, ur style of speaking keeps one interested

[anujmishra]

Hey there, Hussein! i recently work around webrtc technology can you make video on how actually stun and turn server working behind of the seen. Thank you and i really love the way u explain things.

[tuacuedate]

Hi, the big issue with mDNS is flooding. It consumes lot of bandwidth in your network segment.

[palash]

DNS port is 53 not 5353. And multicast is a huge thing to discuss in so short span of time.

[ingramkim]

Here's is my 2 cents. Listening to UDP 5353 is part of the mDNS protocol stack, which has been packed with main stream Linux, OSX, Android, Windows 10, and probably iOS.

[divatchyano_]

Sooo ARP is for find the mac adress from ip adress and it is local, and mDNS is for find the ip adress from a name ?

[rezaebrahimi]

Can I define an A type record in a normal DNS server or DNSSEC for IPv4 and IPv6 multicast addresses without using mDNS?

[Stefan_Dragancev]

Hello, how can i setup mdns “.local” domain on windows computer?

[Mi_Fa_Volare]

Large scale? Every subscriber to the multicast group gets the same message. That's not a good idea for DNS. What would mDNS be good for if not for a mainframe querying a selection of hosts at times simultaneously without the need of static routes (and or (wasting) VLAN-IDs))?

[alexanderschastak]

So... it's basically an over glorified broadcast, and all the devicesare playing DNS? Really a sign of our times of abundant resources in the IT world. Thanks for the video, will try to read more on this, as I'm sure that there are more advantages to it, that I simply don't competent yet.

Have a nice day.

[prasunthapliyal]

Within a lan, shouldn't it be ARP

[yevhenbaidiuk]

probably somebody know ?
Why I don't have access to my Local NAS mynas.locl over VPN ?
Only with ip address it working fine.

[joanmasde]

Ai aMM yuR dEniEs PrOvAIdErR YUr GoNa tAlC tU Mi 4:20