If there is no relevant log information, then the connection is not being established at all,
Yes there no relevant log information for the VPN connection.

Below is only log that I can get from TheGreenBow VPN client
[VPNCONF] TGBIKESTART received
20091211 081638 Default (SA PHASE1-P1) SEND phase 1 Aggressive Mode [SA] [KEY_EXCH] [NONCE] [ID] [VID] [VID] [VID] [VID] [VID]