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Warning

While your public key in id_rsa.pub can be shared freely, your private key in id_rsa must be kept secret. If another person gains access to this file, they will be able to impersonate you thereby accessing all of your files.

Do not ever copy or move your private key from your ~/.ssh folder or set permissions so that other users can access this file.  Permissions on this file should always be "chmod 600," set my ssh-keygen, which means only accessible by the owner.  Do not change permissions on the private key.

Authorizing your key

SCU has a shared home directory which will allow key-based authentication across all HPC nodes.  For this to work add the public key you generated to your authorized_keys file.

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After this step you will be able to access SCU infrastructure without a password.

Avoiding Fail2ban and SSH Proxy


Fail2ban will block invalid connection attempts when users attempt multiple logins with wrong username.

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Then you can just do "ssh aphrodite" and the user name will never be incorrect.

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