alert ip [157.254.112.0/23,157.254.114.0/23,157.254.116.0/23,157.254.118.0/23,157.254.120.0/23,157.254.122.0/23,157.254.124.0/23,157.254.126.0/23,157.254.146.0/23,157.254.148.0/23,157.254.150.0/23,157.254.242.0/23,158.94.208.0/22,158.173.51.0/24,158.222.113.0/24,158.222.119.0/24,158.222.127.0/24,158.249.0.0/16,159.80.0.0/16,159.219.0.0/16] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 32"; 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:2400031; 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;)