SSH Key Authentication | How to Create SSH Key Pairs

There’s a good chance you’ve been using SSH (Secure Shell) to access your Linode from your computer. In this video, we’ll cover how to generate and use SSH Key Pairs for easily and securely logging into your server.
Chapters:
0:00 - Intro
0:52 - Verifying SSH
2:47 - Installing PuTTY for Windows
3:45 - Generating an SSH Key Pair
6:19 - Copying SSH Keys to a Server
11:03 - Using SSH Keys on Windows
17:11 - Copying Public Keys to Linode
18:15 - Outro
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#Linode #SSH #OpenSSH #AlternativeCloud
Product: Linode, SSH Keys, OpenSSH; Jay LaCroix;

[@Dev-sf3pz]

Underrated tutorial on how SSH certs work in relation to client / server and multiple OSs. Cheers!

[@AdrianRandall]

Just what I needed thank you. Really clear and easy to follow along. Great content.

[@antidotejack2771]

great explanation. I saw others tutorials but this made everything snap into place

[@namitaigit]

Really clear and to the point! Thank you!

[@stephenrogers5458]

Jay, this was very helpful to me in getting RSYNC working to move data from Linux to Linux. I looked at lots of other video and written tutorials, got confused enough to hit lots of subtle roadblocks along the way. What you prove here is this topic is not that complex if you stay focused on the essentials.

[@Freddo4J]

This was awesome - thanks! So clear and easy!

[@mrd4233]

The best explanation for ssh! Many thanks!

[@carisma-uk]

thank you very much; I knew about this but never remember the exact sequence of actions; now I did it following your video and it works like a dream

[@bin4rym4ge]

This was invaluable when setting up my Kali ssh server. Thanks. :)

[@Matt-vi2zt]

This is exactly a good example of a tutorial, thanks!

[@innerscopefx4961]

This video may have saved my computer from me throwing it at the wall in a fit of rage as I’m having trouble accessing my vps. Thanks for the great video

[@veaceslavbivol1050]

Thank you , You made it very clear and straight to the point

[@NickForsberg85]

Thanks! This helped me with what I needed and you explained it very clear! 10 stars! :)

[@serpantinthewild]

Very comprehensive tutorial

[@hangemhi001]

ty for the outstanding clarification on how to do this

[@josuangulo9803]

Amazing video, helped me a lot, now I Know the usage of the ssh keys, thank you so much

[@erikolkonen2915]

Very helpful. Thank you!

[@user-zg2kr6ph9z]

instruction clear and on point

[@bullmarket7061]

Thank you, super easy to make it on windows

[@michalroesler]

In Windows we use the terminal (cmd) or PowerShell and we don't need Putty at all. It's 2 years or so, since Windows natively supports ssh connections through PowerShell.

[@viktormohl7332]

thank you, that was very helpful.

[@minskmade]

great video and explanation...thank you

[@muzikmyke3008]

Great video! Thank you so much.

[@phakamilemimisikobi1046]

Thank u soooo much. Very helpful

[@lxw5231]

very good tutorial. thanks.

[@kevinsenquiz902]

Amazing video 5 stars!

[@asrn1739]

Clear ! thank you

[@zafrulhasan8924]

Thanks a lot man

[@rakeshpk4991]

Thank you very much!

[@ameador01]

Windows 10 has a built in option to install the OpenSSH client from Windows Apps and Features. It would be cool to show using that client as it is accessible from the Windows cli and ssh-keygen works from there as well - storing it in the Windows equivalent user/home folder/.ssh structure. However, it doesn't seem to work from there when using the ssh connection - unless I'm setting it up wrong - but that's why it would be nice to see a video using this method and going through setup - using the native Openssh tools.

[@profetik777]

Thank you for doing this for noob like me!

[@toluwanipraise2809]

Hello, Please what command prompt application did you use to input the commands?

[@dolbrechts1980]

On Windows cmd you can use ssh by default!

[@jersh526]

was just about to type this

[@TylerB_777]

I noticed that it doesn't have the cool shortcuts that Linux does though. For example ssh-copy-id which is pretty annoying.

[@jersh526]

@@TylerB_777 I can agree to that. I use WSL unless i need to do a quick one then ill use cmd or ps

[@mdhurrtn]

Great tutorial for openssh for windows 10 pro. Do you have a tutorial for ssh in windows when creating an OpenVPN linode server? Thanks.

[@phenoumene]

hi, thanks a lot for your useful TV 👍 i've watched several of you're videos and i want to thank you for the help you're providing to the rookie i am 😄 it's my fist message here to ask for the correct command when using a another user, if wanting to do this for several users, and use a different port than 22 (which is 'the wrong way to do it' ; )

[@Ouchie]

If I want to use SSH for a server and for GitHub, do I generate two new keys for each service or is it common to reuse the existing one?

[@varadendrav8706]

Great explanation. Is there a video on password-less ssh from Linux to Windows

[@lekemp]

Windows 10 and 11 do include ssh installed by default. Just open cmd or powershell and type ssh. The config files are located under C:\Users\\.ssh. No need to use Putty anymore.

[@SHARK224]

I have question on the ssh key pairs . I run the key Gen by root account then put the public key to target server logon as another account home directory. May I know if I logon to target server with non root account with no password ?

[@linxploit]

Thank you

[@Rishabhkumar-fe9qf]

helpful❤❤

[@fouadchaar4021]

thank you

[@nexaentertainment2764]

To anyone fairly new like me, don't forget to leave the id_ at the start of the filename. Pretty sure that's probably something I was supposed to know but it just caused me an hour or two of headache before realizing... If it isn't common knowledge or something you're supposed to do, it at the very least appears to be default behavior with Windows' OpenSSH implementation. It appears like it won't try user generated keys upon connecting unless you have id_ at the start of the filename.

[@mohamedsayed5394]

i have question pls : why we put private key in putty while we usually send only public key

[@paulmacgiollacaoine8619]

Very good video, thanks you. Just wondering, if I followed your instructions and uploaded my public key to a server does that mean anyone with access to that public key can access that same server?

[@inuyashacoolieo]

No, because the private key is stored on the client machine. You created the key pair on your machine and then added just the public key to the server (using the real password for the server). So you still need to know the login credentials for the server to set up the key pair for the first time. Even if someone else had the public key it would be useless to them.

[@bobbybologna3029]

I can always rely on Jay to save me from myself lol, I set up an SSH key before, forgot about it, now here i am again months later lol

[@DerLung]

I have ssh installed on windows (I can just use it in the terminal) and I can't remember ever having to install it so windows users: maybe you don't even have to install it. Just check by typing ssh into the command prompt and if it gives no error, it is installed.

[@rappalini]

Hi!!!! Im following this steps perfectly (to conect two ubuntu docker containers) and it keeps asking me for the password... why could this be? thanks in advance for any help!!!!

[@ozzman530]

but modern windows does have an ssh client by default.... no putty needed

[@antonfernando8409]

awesome.

[@JPEO]

Mine got "Server refused our key" though I followed eveything.

[@JakubHerbe]

Hi great video, but I'd like to see tutorial with Ed25519. Today, the RSA is the most widely used public-key algorithm for SSH key. But compared to Ed25519, it’s slower and even considered not safe if it’s generated with the key smaller than 2048-bit length.

[@larajimoh2859]

awesome video, please how do i access my private key?

[@send2gl]

I do have a number of Raspberry Pi devices on my home network plus manage an Ubuntu system remotely for a friend. Initially I confused myself a wee bit by actually naming the private and public keys but strangely it all worked fine, seems the actual name of the file is irrelevant, just the contents important.

[@TehAnKorage]

How to copy a key from one client to another when two machines log into one?

[@vanik0r0]

Jay, not sure where I'm going wrong but whenever I try to login to my linode server, the passwood is not recognized. I've repeated your process and re-created the linode using the same password but I'm still refused access. Am using Fedora 35 as my desktop, could it be an SElinux thing?

[@vanik0r0]

Tried it on EndeavourOS and it worked.....thanks!

[@phenoumene]

please, tell why using password is 'wrong' ..

[@user-fn9jj3il1j]

Thx from Ukraine!

[@Otobong_Peter]

On windows you can use WSL without the need for pUTTY from windows 10 uowards.

[@disasterarea9341]

I followed the advice but it hasn't worked :/ when I try and ssh in it still asks for my password. i can see the public key in the authorized keys file. Do I need to make changes to ssh_config or something?

[@disasterarea9341]

I managed to get things working by redoing the ssh-keygen process without specifying a file when prompted with "Enter file in which to save the key (/home/user/.ssh/id_rsa)" I noticed when doing ssh -v user@host, there were a number of lines of the form Will attempt key: /home/george/.ssh/id_rsa Will attempt key: /home/george/.ssh/id_ecdsa ... but did not check the key I had made. I assume there's some config file somewhere which tells it what keys to check - and you'd have to add a new entry if you save your key in an unusual place. it's so easy to trip up :)

[@ethanweatherhead4087]

Can you make a video of using yubikeys to ssh into servers please

[@AkamaiDeveloper]

Check out this video kzbin.info/www/bejne/ap2zp52Fg5lgoZo

[@True_Muslim_Momin]

How to recover access to the server if the private key is lost? Does linode have "rescue" mode?

[@HazeAnderson]

You can launch a LISH console and login with regular credentials.

[@AkamaiDeveloper]

Haze Anderson is right, here is a guide on using the LISH console for more information www.linode.com/docs/guides/using-the-linode-shell-lish/#use-a-web-browser

[@True_Muslim_Momin]

@@AkamaiDeveloper but the point is we will be disabling password access, right?

[@AkamaiDeveloper]

@@True_Muslim_Momin Yes, you will still however be able to login via Lish as a last resort.

[@True_Muslim_Momin]

@@AkamaiDeveloper so Lish works even with the password access disable?

[@jcdock]

Windows does have inbuilt ssh, using powershell

[@---GOD---]

You shouldn't show your public key just like you shouldn't show your password. If someone knows your IP and username, then the public key is akin to a password (unless you also use a password, then they can attempt to brute force that).

[@JarppaGuru]

9:49 BOMM hacker in. thats easy it is no security at all. hacker send public key and he get in. only need user pand password to login. yes its that easy. more easy bruteforce password bcoz there is no 3 attept wait 24 hour or contact admin. so you can try try try root password. thats easy. if you get password and it wont let log in. send public key and BOOM. i not get lol why user is one who send public key when server should send LOL

[@user-rq6fe3lc7d]

Hello, I am getting this error so not able to save public key- please help me. Here is message- "Saving key "/home/user1/.ssh/id_rsa" failed: Not a directory"

[@louis5555gmail]

Since ssh is a major security risk, can I have my ssh server to be running only at a specific time of the week?