What ports do I need to forward
from a NAT router?

Here's what I have so far:
FTP: 20-21
mstsc: 3397-3391
FTPS 989-990
VPN: 1701-1723
IKE: 500;nat-t:4500; esp: 50; ssl 443
?do we need "private": 49151-65535?
?do we need smtp: 25 if we do NOT run an SMTP server?
others?