alert ip [185.34.147.0/24,185.36.80.0/24,185.36.81.0/24,185.36.82.0/23,185.37.195.0/24,185.42.164.0/24,185.56.83.0/24,185.64.23.0/24,185.68.152.0/22,185.81.68.0/24,185.84.157.0/24,185.93.89.0/24,185.99.98.0/24,185.100.120.0/22,185.100.157.0/24,185.102.115.0/24,185.110.0.0/22,185.116.172.0/23,185.116.175.0/24,185.120.8.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 40"; reference:url,www.spamhaus.org/drop/drop.txt; threshold:type limit, track by_src, seconds 3600, count 1; classtype:misc-attack; flowbits:set,ET.Evil; flowbits:set,ET.DROPIP; sid:2400039; rev:4888; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_11_11;)