I can't connect to another host by SSH and nfs

[sun_os]

I encounter the problem with the ssh connectivity and NFS

1. Both of the hosts are already start the sshd daemon and test local successful. However, they can't connect each other by SFTP / SCP.

2. I can't mount the remote host by nfs, I already start the nfs daemon nfsd, nfslockd, mountd, but it still can't mount the share folder from remote site

Who is the guy can help me to solve the problem 

[trevorpe]

Old post, but anyways.
I'm definitely not an expert to let you know.

Did you check your "hosts.allow" file?
Or or "hosts.deny" file?

Did you configure them?  A better question, did you configure them properly for the two computers?