L2TP and ASL behind NAT

Hi,

I have configuration like this

XP --> INTERNET -->cisco with NAT --> ASL

I follow configuration example for establishing roadwarrior L2TP with ASL, but i receive this error:

 cannot respond to IPsec SA request because no connection is known for xxx.xxx.xxx.100/32===xxx.xxx.xxx.253:4500:17/1701...XXX.XXX.XXX.131:4500:17/%any{}
  ^ internet address........................ ^ external address ASL.........^ XP(ADSL)             

I use ASL 5.200 and XP SP1a with NAT-T patch. I tried with XP SP2 with same result.

Thanks.

This thread was automatically locked due to age.