alert ip [198.180.189.0/24,198.180.196.0/24,198.181.0.0/22,198.182.246.0/24,198.183.32.0/19,198.183.238.0/24,198.184.193.0/24,198.186.25.0/24,198.187.192.0/24,198.187.207.0/24,198.187.208.0/23,198.187.210.0/24,198.190.173.0/24,198.193.0.0/16,198.195.0.0/16,198.195.238.0/23,198.196.0.0/16,198.198.0.0/16,198.200.0.0/21,198.200.8.0/23] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 52"; 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:2400051; 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;)