I recently upgraded a PIX 515E from 6.3(5) to 8.0(4). The PIX provides a static NAT to the public interface of a Cisco VPN-3005 concentrator in the DMZ. The CVPN-3005 uses Active Directory for authentication. The Cisco IPSec VPN client for Windows wo...

After using the Cisco PIX-to-ASA Migration Tool to configure an Cisco ASA-5520 to replace a PIX 515E, users can no longer connect to a CVPN 3005 concentrator. "Secure VPN Connected terminated by peer. Reason 427: Unknown Error Occurred at Peer."I sus...