this is kind of two different issues (i hope i'm not confused about the names )
on Zebra run this script as root after you chmod 755 it
echo "setting up IPmasquerading......"
#All The lines below are NAT routing
# flush any old rules
$IPTABLES -F -t nat
# turn on NAT (IP masquerading for outgoing packets)
$IPTABLES -A POSTROUTING -t nat -o eth0 -j MASQUERADE
# enable IP forwarding (of incoming packets)
echo 1 > /proc/sys/net/ipv4/ip_forward
then you need to set jinan to see Zebra as "default gateway"
you netmask for your LAN might do this?
no doubt in your network setup there is a way to configure "Gateway"
i just don't know how to do it
but i do know how to do it i think with the "route" command
so try this on jinan - at least it's a hint or clue and if it works can go in a bootup script
route add Zebra-gw eth0
route add default gw Zebra-gw
you can look at your machines routing table with the "route" command by itself
see "man route"
lets see for the NFS it's been a long time so info might be old !
if you have portmapper running
rpcinfo -p Zebra
should return a upd port listening called nfs
on Zebra rpc.mountd and rpc.nfsd should be running as well as
two kernel modules nfs and nfsd loaded
as well as having set up /etc/exports