alert ip [204.126.32.0/20,204.126.48.0/21,204.126.56.0/22,204.126.60.0/23,204.126.244.0/23,204.128.32.0/20,204.128.151.0/24,204.128.180.0/24,204.130.16.0/20,204.130.134.0/24,204.130.195.0/24,204.140.104.0/21,204.140.112.0/21,204.140.120.0/22,204.146.240.0/20,204.147.64.0/21,204.147.96.0/20,204.147.240.0/20,204.153.116.0/22,204.153.160.0/23] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 61"; 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:2400060; rev:4888; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_11_11;)