ET POLICY localtunnel Sucessful Connection Setup

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET POLICY localtunnel Sucessful Connection Setup";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    file.data;
    content:"|7b 22|port|22 3a|";
    content:"|22|max_conn_count|22 3a|"; distance:0;
    content:"|22|id|22 3a|"; distance:0;
    content:"|22|url|22 3a|"; distance:0;
    content:"localtunnel.me|22 7d|"; distance:0;
    reference:url,localtunnel.github.io/www/;
    classtype:policy-violation;
    sid:2025117; rev:2;
    metadata:attack_target Client_and_Server, created_at 2017_12_04, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_24;
)