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SSH Hardening Checklist

Comprehensive guide to harden your SSH server configuration and improve security.

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SecurityIntermediate
sshsecuritylinuxserverhardening
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Disable root login

Critical

Change default SSH port

Enable key-based authentication

Critical

Disable password authentication

Critical

Configure firewall rules

Set up fail2ban

Enable two-factor authentication

Configure SSH key permissions

Set up SSH session timeouts

Disable empty passwords

Critical

Use SSH protocol version 2

Configure allowed users/groups

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