Tanks Andy
I followed your instructions but nothing. I´m using 5.6u4 which, as far as I know, has some problems to allow run the server-manager out of the local net.
Which version of SME are you using?
The howto I mentioned first say that 5.6 X11forwarding is disable by default
May be I make a mistake and now I have to rollback the changes I did.
Let me review wath I did
Gonzalo