alert ip [146.252.0.0/16,147.7.0.0/16,147.16.0.0/14,147.45.45.0/24,147.45.47.0/24,147.45.124.0/23,147.45.222.0/24,147.78.224.0/22,147.119.0.0/16,148.148.0.0/16,148.178.0.0/16,148.185.0.0/16,148.248.0.0/16,149.18.83.0/24,149.57.11.0/24,149.57.16.0/24,150.10.0.0/16,150.22.128.0/17,150.25.0.0/16,150.40.96.0/19] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 28"; 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:2400027; 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;)