Skip to content

Instantly share code, notes, and snippets.

@thoward

thoward/iptables-udp-flood.txt

Created August 8, 2013 00:04
Show Gist options
  • Star 16 You must be signed in to star a gist
  • Fork 7 You must be signed in to fork a gist
  • Save thoward/6180165 to your computer and use it in GitHub Desktop.
Save thoward/6180165 to your computer and use it in GitHub Desktop.
Download ZIP
Prevent UDP flood
Raw
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
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment