alert ip [124.157.0.0/18,124.175.224.0/19,124.198.131.0/24,124.198.132.0/24,124.242.0.0/16,125.31.192.0/18,125.58.0.0/18,129.56.0.0/16,130.12.44.0/22,130.12.180.0/22,130.148.0.0/16,130.196.0.0/16,130.222.0.0/16,131.108.16.0/22,134.18.0.0/16,134.122.128.0/17,134.122.168.0/24,134.122.188.0/24,134.122.189.0/24,134.195.104.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 27"; 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:2400026; 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;)