Ok guys, opened up a WR41 with recent FW and answered this myself:
Here is the data:
IKE
Encryption: None, DES, 3DES, AES128, AES192, AES256,
Authentication: None, MD5, SHA1, SHA256
Modes: Main, Aggressive,
MODP Group Phase 1, 1-768, 2-1024, 5-1536, 14-2048,
MODP Group Phase 2, No PFS, 1-768, 2-1024, 5-1536, 14-2048,
IPSec
Encryption: None, NULL, DES, 3DES, AES128, AES192, AES256,
Authentication: None, MD5, SHA1, SHA256
MODP Group Phase 2, No PFS, 1-768, 2-1024, 5-1536, 14-2048,
The manual is complete inaccurate on this issues and needs a re-write.
Cheers,
john