alert ip [198.56.0.0/21,198.56.64.0/18,198.57.64.0/20,198.62.0.0/21,198.62.16.0/20,198.62.70.0/24,198.62.76.0/24,198.62.119.0/24,198.96.160.0/24,198.96.224.0/20,198.97.8.0/22,198.97.12.0/24,198.99.106.0/24,198.99.178.0/24,198.99.245.0/24,198.102.222.0/24,198.133.88.0/22,198.133.120.0/24,198.134.139.0/24,198.135.237.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 48"; 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:2400047; 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;)