setup TMG 2010 remote access VPN, have fowarded ports from router getting error 809...

Hi all,

im just setting up my TMG server for remote access vpn for users

on my router i have fowarded ports 1812 & 1813 TCP to my firewalls external interface
and have fowarded UDP 1701 to firewalls ext interface also

on TMG i have done the following  + screens...
VPN Client Properties -
General tab:enable VPN checked & 100 users
Groups tab: no groups and unable to add remove anything
Protocols tab: L2TP/IPSec is checked no others are
User Mapping tab: nothing checked all blank
Quarantine tab: nothing checked all blank

Remote Access Policy Properties
Access Networks: External checked | interal checked for testing purposes
Address assignment: DHCP and use internal card | advanced properties left as default
authentication: see screen 1
radius: see screen 2

NPS Settings & RRAS settings i havent touched yet there all default

anyone see where im going wrong?
im thinking along the lines of, do i need radius settings?

CHeers




authentication.PNG
radius.PNG