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malikshi/iptables-udp-flood.txt

Forked from thoward/iptables-udp-flood.txt
Created August 22, 2022 08:16
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Prevent UDP flood
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iptables-udp-flood.txt
# Outbound UDP Flood protection in a user defined chain.
iptables -N udp-flood
iptables -A OUTPUT -p udp -j udp-flood
iptables -A udp-flood -p udp -m limit --limit 50/s -j RETURN
iptables -A udp-flood -j LOG --log-level 4 --log-prefix 'UDP-flood attempt: '
iptables -A udp-flood -j DROP
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