Set SSH Key Permissions

SSH refuses keys with loose permissions. Get the exact chmod for your key files.

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Octal (editable)

rwxr-xr-x

Symbolic

Command

$ chmod 755 filename

Common presets

SSH Keys tips

🔑

Private keys must be 600 (owner read/write only). SSH will refuse to use a key that's group- or world-readable.

💡

The .ssh directory itself should be 700, and authorized_keys should be 600.

🎯

Public keys (.pub) can be 644 — they're meant to be shared.

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