alert ip [93.187.128.0/22,94.26.38.0/24,94.26.88.0/24,94.26.90.0/24,94.26.105.0/24,94.26.106.0/24,94.74.164.0/24,94.74.191.0/24,94.103.188.0/24,94.154.35.0/24,94.154.43.0/24,94.154.46.0/24,94.183.168.0/24,95.85.238.0/24,95.164.131.0/24,95.164.162.0/24,95.169.180.0/24,96.31.94.0/24,98.98.195.0/24,101.0.16.0/20] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 17"; 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:2400016; 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;)