Can ping untangle server but nothing else

Hi all :)

Running untangle behind a HP procurve firewall. I have created a NAT from our RW ip address to the untangle server for remote client to site openvpn.

I can establish the vpn but can only ping/see the actuaql untangle server.

WHat do I need to do so that remote vpn connections can see the whole local LAN??

thanks
TP