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iptables -I INPUT -p tcp --dport 22 -j ACCEPT
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chmod 600 ~/.ssh/id_rsa

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ssh-copy-id user@server-ip

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ping server-ip

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iptables -D INPUT -p tcp --dport 22 -m state --state NEW -m recent --set
iptables -D INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 60 --hitcount 3 -j DROP
iptables-save

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