ended3월 23일· 1 sources
SSH Hardening: Ed25519 Keys and Disabling Root Login
SSH 보안 강화: Ed25519 키 설정과 Root 로그인 비활성화
Why it matters
This guide hardens SSH by replacing RSA with Ed25519 keys, fully disabling root login (beyond the default prohibit-password), and using a drop-in sshd_config file to restrict accepted key algorithms and disable unused authentication methods like GSSAPI and keyboard-interactive auth.
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SSHEd25519sshd_configRoot LoginFIDO2