Zyxel USG 50 and Shrewsoft VPN

I have been searching for an answer to this, but so far no luck.

I have a Zyxel USG 50 and I am using Shrewsoft VPN.  I have the tunnel enabled and running, but I cannot get any resources behind the gateway to be available.  

It has to do with the Firewall rules and/or policy routing issue, does anyone have any experience with this?

I have found the info. for getting the tunnel established and it really is pretty straight forward.  I can't find anything about getting access to resources.  The pre-established firewall rules aren't of much help.  I have tried implementing some on my own with no success.

I was hoping the USG 50 would be a good low cost firewall, but now I have my doubts.
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nociSoftware EngineerCommented:
you need a policy route from the network (interface) where the packets come from pointing to the right tunnel...
And the firewall needs to allow the traffic, fro the ultimate source to the ultimate address as the Zywall sees it.
gmanryAuthor Commented:
Yeah, I have tried what I thought were the right rules for that, but no luck yet.  I will post some screen shots, and maybe we can figure out where I am going wrong.  The Zyxel series is a bit different in how it lays things out, at least it seems that way to me.

It's affordable, so that is why this person bought it.
nociSoftware EngineerCommented:
it is actualy quite usable, it uses a linux kernel and has management layer around it.
So the web & command interface actualy manage iptables.
please present more info...
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