SSH network question

[Jim]

I'am trying to connect to a server on the internet using ssh-x, I have 
IP, passwords, but I can't connect to server.
The server can connect to my box , with my IP  using ssh -x
SSHD is running on my box, my router is setup to do all 'ssh' to my box.
SSHD is runing on server.
When I do ssh -x to server it just times-out, no error messages.
What network command can I use to see if 'ssh' is even getting to server 
from my box.
I can ssh -x from this box to another server with no problems.
I have 'root' access to server, what can I check there? the server is 
connected to a DSL AT&T black box. no router.
Both my box and server is Fedora 8.