Ubuntu, Debian, Kali Regenerate Openssh Keys

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How can I regenerate ssh keys of my openssh-server in Debian, Kali, Ubuntu or other dpkg based distros. Host keys can regenerated safely without affecting any ssh session.

Remove All Existing Host Keys

We need to clear our home so we will remove our host keys. Host keys reside in /etc/ssh by default.

Regenerate Keys

Now we will use dpkg-reconfigure our package management tool to generate host keys. dpkg will process openssh-server as if installing newly and rerun all setup configuration procedure from scratch.

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