NFS over IPSec tunnel

[Bret J Esquivel]

I am trying to connect to a NFS server over my IPSec tunnel. However,  
I whenever I  try to mount I get:

[udp] 10.0.20.1:/usr: RPCPROG_MNT: RPC: Timed out

What's wierd is that I can do RPC calls to it, such as:

[bret at kahuna:/mnt] rpcinfo -t 10.0.20.1 nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting
[bret at kahuna:/mnt] rpcinfo -u 10.0.20.1 nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting

And even a 'showmount -e 10.0.20.1' works:

Exports list on oasis:
/usr                               10.0.10.10

This client box is connected to another NFS via the local lan and runs  
fine. The firewall rules on both boxes were flushed as a last ditch  
effort to get this to work, but still nothing. Anyone have any insight  
on this problem?

Thanks!

-- 
Bret J. Esquivel
Immense Networks LLC
http://www.immense.net