alert ip [199.88.251.0/24,199.89.16.0/20,199.89.198.0/24,199.103.64.0/22,199.106.8.0/21,199.107.96.0/22,199.107.152.0/21,199.108.212.0/22,199.108.236.0/22,199.120.160.0/24,199.120.163.0/24,199.164.242.0/24,199.165.32.0/19,199.165.237.0/24,199.165.238.0/24,199.166.200.0/22,199.166.214.0/23,199.170.128.0/22,199.175.142.0/23,199.175.144.0/21] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 49"; 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:2400048; 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;)