alert ip [91.214.78.0/24,91.214.109.0/24,91.215.85.0/24,91.218.236.0/22,91.220.163.0/24,91.224.92.0/24,91.229.52.0/22,91.231.222.0/24,91.232.18.0/24,91.233.0.0/23,91.235.130.0/23,91.243.93.0/24,91.246.43.0/24,91.246.176.0/21,92.63.197.0/24,92.87.6.0/24,92.118.39.0/24,92.242.62.0/24,92.255.57.0/24,92.255.85.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 15"; 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:2400014; rev:4769; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_07_15;)