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After generating a new SSH key, the old one is still active?
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After generating a new SSH key, the old one is still active?

vahevahe Member
edited April 2012 in General

I generated a ssh key on my local machine, and uploaded the id_rsa.pub and renamed it to authorized_keys. I could connect to the server no problem. Then I removed the id_rsa from my local machine and generated a new key, again on the same machine. Now, without uploading the new id_rsa.pub public key, I can still ssh to the server.
Why does this happen? Don't the key pairs have to match? How can I disable the old key?

Comments

  • Delete the old key from the server and restart SSH.

    Thanked by 1vahe
  • vahevahe Member

    Thanks, this works. But why am I able to connect if I have the old key on the server, but not on my local machine?

    Thanked by 1dnom
  • NickMNickM Member

    If you're using Linux, the old key may have been cached in memory by ssh-agent.

    Thanked by 1djvdorp
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