Might be able to help a bit.
1) This is hard it will show who is logged in now but there is not much of audit log. One option would be to send syslog somewhere and you can track them that way some how
2) For the 3002 and i believe on the 3005 and a 3030 if you go to monitoring and then under system status if it has a newer firmware in the 4.7.2 range the CAMXXXXXXXX will be listed.
It should say:
VPN Concentrator Type: 3030
Serial Number:CAMXXXXXXX