Oh, strange, I didn't receive your answer by mail... I actually have no idea if MPPE is used in my 1.20.10-1 log, I just configured it as I was told and never thought about it :)
Now that I documented myself, it makes sense that IPSEC is much stronger. The l2tp tunnel being protected by IPSEC, there is no need for MPPE at the l2tp level. So now I can upgrade and adapt my configurations, but it would probably be interresting to disable the MPPE possibility if IPSEC is used: make it unselectable in the gui, or not enforce it when the vpn is created. Thanks, -- Rémi Letot
