If you had said this at the start, and posted the debug log, you would have solved the problem a long time ago. This is even in the FAQ: http://wiki.freeradius.org/FAQ#The_NAS_seems_to_ignore_the_reply_of_the_radi... Alan DeKok. Alan, As you said, I tried with the option -i : radiusd --i <ip_address_radius server> -X But still i get the below error message at the radius server end, only one NIC is active now on the server. --- Walking the entire request list --- Waking up in 6 seconds... rad_recv: Access-Request packet from host 192.168.0.1:4754 , id=119, length=151 Sending duplicate reply to client dlink:4754 - ID: 119 Re-sending Access-Accept of id 219 to 192.168.0.1 port 4754 On the client side MSVPN dialer interface, i see the error message: "Error 718: the connection was terminated becasue the remote computer didnt respond in timely manner". Thanks for your patience and co-operation.