alert ip [86.105.229.0/24,86.105.230.0/24,86.106.10.0/24,86.106.13.0/24,86.106.14.0/23,86.106.80.0/24,86.106.94.0/23,86.106.106.0/23,86.106.110.0/23,86.106.140.0/23,86.106.174.0/23,86.107.72.0/24,86.107.193.0/24,86.107.194.0/23,86.111.228.0/24,87.121.84.0/24,87.228.25.0/24,87.228.109.0/24,87.228.110.0/24,87.228.112.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 13"; 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:2400012; 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;)