Understanding SSH Host Keys

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Describing what SSH host keys are, what they are used for, and what actually happened when GitHub rotated their RSA SSH host key.

  1. Matthew Sanabria
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Комментарии
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That is very well explained, I learned a lot from this video than I expected 🔥Keep going 👏🏼

sureshmg
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Very interesting explanation 🙏 thanks.

I confirm: "Part of being a great Engineer, is knowing your tools and how to use them."

chemseddsen
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When you changed the host keys, you didnt change your private key on your laptop. So how did your previous private key work with the new host keys?

cyberwithdani
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Thank you. This was helpful. Have a better understanding now of how this works. Will come in handy at work.

ThestAgent
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Great video. Well done. Are SSH Host keys only produced by the administrator of the server you are connecting to? I heard you say you generated your own public and private key pair. That public key you mentioned you created as part of that pair is different than the SSH Host key you are talking about in the video, correct? Is the public/private key pair you created to encrypt and decrypt PGP files only and not for host authentication (for example, logging into a server as you do in the video)?

kmille
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what's the purpose of this process? Does not everyone could get the public key and send to you ? How could the host key or the fingerprint verify the server?

changji-kw
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best explanation on youtube, well done!

markdavidil
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Big thumbs up, I can move now (unfreezed)

alsonyang
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you are such a good explainer 😮 subscribed

aabishkarwagle
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Great stuff, i have same error but this solution does not work bc i can't even access the /etc/.ssh path . am using an amazon ec2 instance with a public ip, i can successfully ssh into it, when i want to ssh to another server from this server using its private ip, it gives me this below error "

The authenticity of host '10.0.2.241 (10.0.2.241)' can't be established.
ECDSA key fingerprint is
ECDSA key fingerprint is
Are you sure you want to continue connecting (yes/no)?
Host key verification failed.


can you advice how to resolve this

ndefrutitus