alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"🐾 - 🚨 APT package management 📦 Docker"; flow:to_server, stateless; threshold:type limit, track by_src,count 1, seconds 86400; http.host.raw; content:"download.docker.com"; http.user_agent; content:"APT-HTTP|2F|"; nocase; reference:url,https://www.docker.com/; metadata:created_at 2022_05_06, updated_at 2022_06_11; sid:3300046; rev:2; classtype:policy-violation;)