I have a ADSL link at home and uses a Firewall product called IPCOP
www.ipcop.org in IPCOP there is a option called IPSec pass-through
VPN, it then uses ip_masq_ipsec. I can connect to MS VPN links and
works, but when I try to connect to BM VPN, I connect and log in but
no data
transfer happen.

Any ideas ?