alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO HTTP POST Request to DuckDNS Domain"; flow:established,to_server; http.method; content:"POST"; http.host; content:".duckdns."; fast_pattern; classtype:bad-unknown; sid:2031581; rev:1; metadata:created_at 2020_07_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2020_07_14;)