Certificates from Scratch - X.509 Certificates explained

What are X.509 Certificates? What is a "Certification Authority" or CA? How can we create our own CA? How can we sign our own Server certificates? How does LetsEncrypt work? How do private and public keys work? What is a certificate Chain or a Chain of Trust? The answers are in this video.

0:00 about certificates
2:42 Certificate Chains / CA
7:15 private keys
9:14 how do private/public keys work?
12:38 how does Letsencrypt work ?
14:18 We create our own CA and certificates
16:42 When and how to use a self signed CA

[jairunet]

Excellent, there are not many well-explained X.509 certificate videos online, this is super valuable, and thank you for putting this series together, looking forward to the next one.

[rklauco]

While I understand the certificates now, I should have had this video on my playlist ~5 years ago. This is excellent. I'll use your channel to recommend to my team - your IPv6 videos rock, so does your OpenWRT tutorials. Keep it up! Thanks for the effort.

[CyberJuke]

This is the best video so far about certificates. Thank you so much for the marvelous explanation. Nice job!

[tissandre]

What a coincidence! I was, this morning, looking at possibilities of using Certificates for authentication on SSH connection. And you start a new serie on Certificates right at that time!!! I'm SOOO looking forward to see the rest of the serie! Thanks!

[F_Airborne]

Great content and presentation. Not only that, you just seem like a genuinely nice person. Subscribed.

[depnik]

Thank you sooo much Marc. This is easily one of the best explanations about certificates I’ve come across.

[lteoot]

Always love when I see a new video drop, these are gold

[taimoorkhan]

As a CS undergraduate, I found this video very interesting and easy to understand, appreciate your work man, you got a sub 👍

[pberto]

Thank you so much Marc. I think your explanation is the simplest and clearest one I've ever dealt with.
I don't see the time when you will public next episodes.

[rohanofelvenpower]

I just stumbled on this recently so now Im interested to learn it and behold, one of the greatest teaching channels on youtube drops a video on it perfect!

[matrix]

Nice! Marс, you have a talent to explain complex things in simple terms

[arghyl]

This is fantastic! Thank you for making the topic so easy to understand. Certificates are certainly something I struggle with a lot!

[leonardoquatrocchi]

You did a great job explaining this while showing the video the whole process so everybody can follow all the use cases and security concerns. Thank you so much!

[jeroenrevalk]

Thanks for the Cert series. Very helpfull!

[cho_ke]

I learned a lot from the info you provided. CA and CA. Best of the best. Thank you sir☺☺

[konradmolinski]

i've been looking for good explanation of that topic for a while. This is incredible good one. Thank you!

[plousho]

Amazing video, I am studying for my exam and this video helped me understand the process alot better!

[daysiewaysie]

you are born to teach ! a great video and up to your usual, fantastically high standards... looking forward to the continuation of this series... many thanks Marc.

[NigelSharp]

Really awesome explanation. I've watched many of these tutorials and this is the best.

[jeffreyplum]

I have a use case for self signed certificates. Old style FTP sends everything in clear text. If I configure my server with a certificate, it becomes a FTPS server like using a certificate turns HTTP into HTTPS. At times one only wants to avoid sending everything in an easily read form, on an internal network Self signed certs can be more a tool for privacy rather than the tight trust and security a bank or commercial business requires.