Pdu ftp_pdu Proto ftp Transport tcp/ip {
        Extract ftp_addr From ip.addr;
        Extract ftp_port From tcp.port;
        Extract ftp_resp From ftp.response.code;
        Extract ftp_req From ftp.request.command;
        Extract server_addr From ftp.passive.ip;
        Extract server_port From ftp.passive.port;

        LastPdu true;
};

Pdu ftp_data_pdu Proto ftp-data Transport tcp/ip{
        Extract server_addr From ip.src;
        Extract server_port From tcp.srcport;

};

Gop ftp_data On ftp_data_pdu Match (server_addr, server_port) {
        Start (server_addr);
};

Gop ftp_ctl On ftp_pdu Match (ftp_addr, ftp_addr, ftp_port, ftp_port) {
        Start (ftp_resp=220);
        Stop (ftp_resp=221);
        Extra (server_addr, server_port);
};

Gog ftp_ses {
        Member ftp_ctl (ftp_addr, ftp_addr, ftp_port, ftp_port);
        Member ftp_data (server_addr, server_port);
};

Done;