Secure Vultr SSH keys with a passphrase, chmod 600 permissions, an SSH agent, and regular key audits.
SSH keys grant direct access to your server, making them high-value credentials that must be secured. If exposed or mismanaged, a private key can be used to gain unauthorized access to your systems.
To keep your SSH keys secure:
Store your private key in a secure, access-controlled location on your local machine.
Protect the private key with a strong passphrase to guard against misuse if the key is compromised.
Never share your private key or upload it to untrusted platforms or services.
Set strict file permissions to prevent unauthorized access:
Use an SSH agent or key management tool for secure, passphrase-protected authentication.
For additional protection, regularly audit your keys and remove any that are no longer in use.
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