FMP12 Adv cannot open remote, but works well on browser

[FranciscoMtz]

Im using FIleMaker Pro 12 Advanced on Virtual Windows on VirtualBox in a Ubuntu machine, and if I try to open remote it doesn't shows the user login window. The server is from triple8.net

 

The ports are ok for both Ubuntu and Virtual Windows, even I include all of this TCP and UDP ports only just in case: 80, 2399, 5003, 5013, 5015, 16000, 16001, 16004, 16006, 16008, 16010, 16012, 16014, 16016, 16020, 16021 and 50003

but still doesn't open.

 

The ip is ok, it works well by iwp on any browser and FileMaker 12 on other computers on the same network. Wich can be the problem ?