alert ip [103.34.0.0/16,103.36.64.0/22,103.37.118.0/24,103.39.108.0/22,103.40.8.0/24,103.40.52.0/23,103.43.140.0/22,103.44.208.0/22,103.48.36.0/22,103.52.48.0/22,103.54.164.0/22,103.55.84.0/22,103.56.112.0/22,103.56.144.0/22,103.58.68.0/22,103.67.252.0/22,103.72.200.0/24,103.76.84.0/22,103.77.9.0/24,103.80.132.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 19"; 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:2400018; rev:4769; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_07_15;)