iptables -N limit-packet-rate
iptables -F limit-packet-rate
iptables -Z limit-packet-rate
iptables -A INPUT -m state --state NEW,ESTABLISHED,RELATED -j limit-packet-rate
iptables -A INPUT -j limit-packet-rate
iptables -A limit-packet-rate -m hashlimit --hashlimit-name packetRateLimit --hashlimit 200/sec --hashlimit-burst 300 --hashlimit-mode srcip -j RETURN
iptables -A limit-packet-rate -j DROP
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