Fedora 9 and Suse 11.0 ssh do not work together

[Dave Feustel]

I am running 32-bit fedora 9 and 64-bit Suse 11.0 and 64-bit OpenBSD 4.4
on a local net. Ssh does not work between F9 and Suse 11.0. Ssh
from f9 to Suse times out. An ssh connection from Suse to F9 is refused
by F9. Ssh from F9 to OpenBSD works. Ssh from OpenBSD to Suse times out
at login. SSh from OpenBSD to F9 is denied (publickey,gssapi-with-mic).

I was surprised that these 3 system do not talk to each other with their
default config files. Is there a common set of config files with which
all ssh connections work?

Thanks.