alert ip [157.119.64.0/22,157.148.116.0/24,157.162.0.0/16,157.186.0.0/16,157.254.106.0/23,157.254.108.0/23,157.254.110.0/23,157.254.112.0/23,157.254.114.0/23,157.254.116.0/23,157.254.118.0/23,157.254.120.0/23,157.254.122.0/23,157.254.124.0/23,157.254.126.0/23,157.254.146.0/23,157.254.148.0/23,157.254.150.0/23,157.254.242.0/23,158.94.208.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 31"; 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:2400030; 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;)