alert ip [77.36.112.0/21,77.47.242.0/24,77.81.84.0/23,77.81.86.0/24,77.81.89.0/24,77.83.39.0/24,77.90.154.0/24,77.90.185.0/24,77.91.119.0/24,77.109.3.0/24,77.244.221.0/24,78.40.143.0/24,78.153.140.0/24,79.124.62.0/24,80.94.92.0/24,80.94.92.0/22,80.94.95.0/24,80.97.47.0/24,80.208.192.0/20,80.244.11.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 11"; 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:2400010; rev:4813; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_08_28;)