Connect to remote db

Hi!

In Tamino Manager (ver. 3.1.1) I add new host (I specify IP address) which also includes Tamino (ver. 2.3.1) Then I want to connect to previously added host (I must say that I wrote my domena/user and password), I get the follwing error:

"(ARG0107) Connect function has failed".

What should I do to make work it?

Thanks a lot in advance.

best regards,
Dariusz Baumann