After I Enableand configure (Radius For Accounting (logging)) from TMG consol ,It loged TMG IP address instead of Real vpn client machin Ip address (LAN Ip address) in SQL Database

Hi,

I have TMG server with Nap service and sql service install on it,I have vpn client who connect to Internet Via vpn connection from my Internal network.I want to enable Accounting that report which client frome which computer start vpn connection.

I want to Use Microsoft NAP service As a Radius for LOG Accounting Instead Of Using Third Party Radius  to record vpn connection Log. after I configured  log accounting From NAP Console in Accounting Section , which save record on sql database . I query the database ,in (Client_IP_Address) Table instead of real client machine Ip address ,it show me the TMG IPADDRESS.

there is a log file start with(IN*) in c:\windows\system32\report\  folder which show me the vpn machine client IP address and user properties connection correctly.

I print screen the Database and select the problem.

you will be kind enough if you help me.