NFS w/SSH Connection Woes

Hi everyone,

I've spent the better part of the day playing and googling, but have run out
of ideas. Hopefully someone here can point me in the right direction! I
have two Linux boxes in different buildings. I would like to access a
directory on one box (sby-server) from the other (nby-server) over Internet.
There is a firewall up on both boxes, so I'm trying to do this using SSH.

I'm using Fedora Core 3 on sby-server and Fedora Core 2 on nby-server. I've
read through an NFS Howto and learned how to lock down the ports that NFS
uses, as I believe they were assigned "randomly". On sby-server, this is
what "rpcinfo -p" reports:
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 32768 status
100024 1 tcp 32768 status
100011 1 udp 4003 rquotad
100011 2 udp 4003 rquotad
100011 1 tcp 4003 rquotad
100011 2 tcp 4003 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100021 1 udp 32899 nlockmgr
100021 3 udp 32899 nlockmgr
100021 4 udp 32899 nlockmgr
100021 1 tcp 33024 nlockmgr
100021 3 tcp 33024 nlockmgr
100021 4 tcp 33024 nlockmgr
100005 1 udp 4002 mountd
100005 1 tcp 4002 mountd
100005 2 udp 4002 mountd
100005 2 tcp 4002 mountd
100005 3 udp 4002 mountd
100005 3 tcp 4002 mountd

So NFS is always on port 2049, and MOUNTD on 4002. On nby-server, I run
these two commands to establish connections and forward the ports:
ssh root@sby-server -L 250:localhost:2049 -f sleep 60
ssh root@sby-server -L 251:localhost:4002 -f sleep 60

My nby-server /etc/fstab has the following entry:
localhost:/usr/local/share /mnt/share nfs
rw,hard,intr,port=250,mountport=251 0 0

My sby-server /etc/exports has the following entry:
/usr/local/share 127.0.0.1(rw)

But, running "mount -v /mnt/share" gives me this:
mount to NFS server 'localhost' failed: possible invalid port.
RPC Error: 15 ( Program not registered )

After some googling I read that people suggested adding some entries in
/etc/host.allow, which I did on nby-server:
ALL: 127.0.0.1
ALL: 192.168.3. #This is the network nby-server is attached to, don't
know if I need it...
portmap: sby-server

And "sby-server" is properly set in my /etc/hosts file. Any ideas on where
I should go next? The end goal is, once I have the NFS share mounted
properly on nby-server, that I can use Samba to make it available to my
Windows workstations so users can read/write to that share.

Thanks in advance. :-)

Michael.