Radius-based windows authentication

[Mike Perdide]

Hello,

I'm working on VLAN assignement with FreeRadius, with windows XP users.
The FreeRadius server is using openLdap, and works overs EAP-TTLS. 

The goal of my work is for the users to be on different Vlans depending on 
their status. 

The radius part is working fine, since the switch sets the right vlan when the 
user gives his login and password.

My question was : is it possible to authenticate via radius at the windows 
login screen ?

For now, it is using the samba database, but if I want to set up a dynamic 
vlan assignement, the network needs to be up before the samba partitions are 
mounted.

Thanks !