alert ip [197.11.156.0/24,198.13.64.0/21,198.13.72.0/23,198.17.78.0/24,198.17.197.0/24,198.20.16.0/20,198.37.0.0/22,198.45.32.0/20,198.45.64.0/19,198.46.0.0/21,198.46.8.0/23,198.51.77.0/24,198.51.78.0/23,198.51.80.0/23,198.51.161.0/24,198.54.232.0/24,198.56.64.0/18,198.57.64.0/20,198.62.16.0/20,198.62.70.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 45"; 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:2400044; 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;)