alert ip [141.206.128.0/20,142.102.0.0/16,143.92.32.0/20,143.92.43.0/24,143.92.48.0/20,143.222.0.0/16,144.215.0.0/16,145.231.0.0/16,146.3.0.0/16,146.19.5.0/24,146.19.125.0/24,146.47.0.0/16,146.51.0.0/16,146.106.0.0/16,146.185.222.0/24,146.252.0.0/16,147.7.0.0/16,147.16.0.0/14,147.45.45.0/24,147.45.47.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 29"; 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:2400028; rev:4813; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_08_28;)