nekonojita

iptables FTP

May 30th, 2013
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  1. -A INPUT -i eth0 -p tcp -m tcp --dport 21 --tcp-flags FIN,SYN,RST,ACK SYN -m recent --set --name ftp --rsource
  2. -A INPUT -i eth0 -p tcp -m tcp --dport 21 --tcp-flags FIN,SYN,RST,ACK SYN -m recent --rcheck --seconds 30 --hitcount 5 --name ftp --rsource -j DROP
  3. -A INPUT -i eth0 -p tcp -m tcp --dport 20 -j ACCEPT
  4. -A INPUT -i eth0 -p tcp -m tcp --dport 21 -j ACCEPT
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