iptables / forwarding

[awpti]

I've got the following rules setup

iptables -A PREROUTING -t nat -j DNAT -p tcp -i eth0 -d 208.109.234.83 --to-destination 172.16.197.128
iptables -A POSTROUTING -t nat -j SNAT -o eth0 -s 172.16.197.128 --to-source 208.109.234.83

iptables -I FORWARD -j ACCEPT -s 172.16.197.128
iptables -I FORWARD -j ACCEPT -d 172.16.197.128

So, this is for Solaris running on VMWare server (for grins and giggles).

Solaris can talk to the host OS and and the host OS can talk to Solaris in the VM

External forwarding, however is not working.

I've run into a brick wall trying to figure out what the problem is with these rules.

Any thoughts/solutions? I've got to be doing something completely daft.

Addendum: Can't do bridging because the network I'm on using MAC Security to stop people from ganking other IPs. I'm using host-only NAT forwarding.

[secondmouse]

What's the output of this command:

cat /proc/sys/net/ipv4/ip_forward

If it's 0, do a

echo 1 > /proc/sys/net/ipv4/ip_forward