alert ip [122.129.0.0/18,123.108.108.0/22,123.136.80.0/20,123.242.0.0/17,123.253.108.0/24,123.253.109.0/24,123.253.204.0/22,123.254.104.0/21,124.20.0.0/16,124.68.0.0/16,124.147.128.0/17,124.157.0.0/18,124.198.131.0/24,124.198.132.0/24,124.242.0.0/16,125.31.192.0/18,125.58.0.0/18,129.56.0.0/16,130.12.44.0/22,130.12.180.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 25"; 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:2400024; rev:4719; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_05_26;)