alert ip [45.83.31.0/24,45.86.48.0/22,45.88.186.0/24,45.91.227.0/24,45.92.1.0/24,45.93.20.0/24,45.94.31.0/24,45.114.184.0/22,45.114.200.0/22,45.116.224.0/22,45.117.140.0/22,45.121.204.0/22,45.125.12.0/22,45.125.66.0/24,45.129.187.0/24,45.132.180.0/24,45.133.73.0/24,45.133.246.0/24,45.135.48.0/22,45.135.193.0/24] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 6"; 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:2400005; rev:4719; metadata:affected_product Any, attack_target Any, deployment Perimeter, tag Dshield, signature_severity Minor, created_at 2010_12_30, updated_at 2026_05_26;)