Problem with L2TP connection from Windows client

[diuczysko]

Hi,

We have problem with L2TP connection from Windows XP built-in client to failover cluster of VPN-1

Power-1 R70. When only one remote client is connected to gateway, connection is stable and working

fine. Problem occur when more than one remote client is connecting to Check Point Gateway from

whichever remote localization (clients are behind NAT). New clients has problem with connection or

connections are disconected after some random time (but the first client is still conected without

problems). W can observe in tracker dropped packets marked as:

encryption fail reason: decrypted and user methods are not identical (VPN Error code 02).

Propably problem appears after software upgrade from R65 to R70 (I'm not sure), VPN configuration

wasn't changed.