alert ip [198.135.237.0/24,198.137.160.0/24,198.140.157.0/24,198.148.212.0/24,198.151.16.0/20,198.151.138.0/24,198.151.152.0/22,198.153.0.0/21,198.153.32.0/20,198.160.205.0/24,198.160.212.0/22,198.160.216.0/24,198.169.201.0/24,198.177.175.0/24,198.177.176.0/22,198.177.180.0/24,198.177.214.0/24,198.177.216.0/24,198.179.22.0/24,198.180.189.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 48"; 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:2400047; rev:4770; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_07_16;)