alert ip [204.75.174.0/24,204.75.228.0/24,204.76.16.0/21,204.76.24.0/22,204.76.28.0/24,204.76.203.0/24,204.80.180.0/24,204.80.198.0/24,204.80.210.0/24,204.86.16.0/20,204.87.199.0/24,204.87.234.0/24,204.88.160.0/20,204.89.202.0/24,204.89.224.0/24,204.91.96.0/20,204.107.132.0/24,204.107.208.0/24,204.110.8.0/21,204.110.144.0/20] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 60"; 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:2400059; 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;)