It is not possible to make a vpn connection from winxpro with sp1
and vpn 3.8.7 client. NMAS authentication.
I always get the following error at the client workstation
"Failed receiving server DH public value"
"VPN has not be authorized for this user or method"
This error will be displayed with the following configuration

One server 2 nics
nwsp6.5sp2 ovelay cd
nw65sp3beta
tcp657jb
bm3.8
bm38sp2a
bm38fp3c
bm38sp3beta

If I make a connection to another server with
nw6.5 SP2
bm3.8+sp2a
it is working.
So I think it could be nw6.5sp3beta or any newer fix from bm3.8

Further I read in this forum that some other people have the same troubles.

So I thought maybe the last fix of bm3.8 could solve my problem
bm38fp3e.
But it is still the same.

Any ideas ?