alert ip [192.35.54.0/24,192.40.29.0/24,192.42.146.0/24,192.54.110.0/24,192.65.202.0/24,192.73.17.0/24,192.80.44.0/24,192.88.104.0/24,192.88.117.0/24,192.88.118.0/24,192.88.120.0/24,192.88.122.0/24,192.88.128.0/24,192.88.129.0/24,192.88.130.0/24,192.88.131.0/24,192.88.133.0/24,192.94.211.0/24,192.94.240.0/24,192.96.87.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 41"; 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:2400040; rev:4769; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_07_15;)