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how to block udp ddos

Posted by xlenonz, 08-25-2010, 06:03 PM

hi, i get udp ddos attack. tcpdump output tons like that sender ip and port are random. so i need to block lenght 5 , i try some iptables command but not drop that. what i need to use drop length 5 packets ?

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Posted by khunj, 08-26-2010, 07:24 AM

You may need to use -I (Insert) instead of -A (Append). You can also remove the -s and -d options as they are useless.

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