L2TP over IPSEC PC dial firewall unsuccessful

Publication Date:  2012-09-12 Views:  144 Downloads:  0
Issue Description
Client topology:
PC -----Family use Router ------------- USG3040 ------- Internal Network
Client dial USG3040, dialing unsuccessful. The client software stops in the third stage, and then reports error: active link is disconnected
Client USG3040 even established ipsec with a lot of filiales
Alarm Information
Handling Process
Open nat traversal open in ike peer 
Root Cause
Customers no longer open nat traversal on USG3040 
NOTE: The client access to the Internet from home, the previous household routing modem conversion nat to open nat on USG3040 crossing