Mitigar ataque de DNS con mikrotik

/ip firewall filter
add action=drop chain=forward comment="drop from all in dns-flood address list" dst-port=53 protocol=udp src-address-list=dns-flood
add chain=forward comment="add src IP to dns-flood address list" dst-limit=1,10,src-address/20s dst-port=53 protocol=udp           
add action=add-src-to-address-list address-list=dns-flood address-list-timeout=23h59m59s chain=forward dst-port=53 protocol=udp    

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