alert ip [207.110.64.0/18,207.183.64.0/19,207.183.96.0/20,207.183.192.0/19,207.199.173.0/24,207.199.188.0/24,207.199.190.0/24,207.228.200.0/22,207.244.0.0/18,207.252.136.0/21,208.75.88.0/22,208.90.32.0/21,208.98.64.0/18,208.187.240.0/22,208.217.32.0/20,209.17.192.0/19,209.50.160.0/19,209.66.0.0/18,209.66.128.0/19,209.79.220.0/22] any -> $HOME_NET any (msg:"ET DROP Spamhaus DROP Listed Traffic Inbound group 65"; 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:2400064; 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;)