TuoTu is a P2P software based on P2P technology in China.
TuoTu supports BT,ED2K(eMule),HTTP,FTP,MMS and RTSP protocols. TuoTu use TCP 3000 as its default login port.
If TCP port 3000 is blocked, it will use TCP port 3306 to login. If both ports blocked, login fails.
Simply block TCP port 3000 on the firewall.