[Samba] Authentication hook to run extra checks before allowing Windows login

[Sebastian Arcus]

Hello all. Does Samba in AD mode provide any sort hooks to run a script 
when a user attempts to login, before replying to the authentication 
attempt? I need to prevent certain users from being logged in from more 
than one machine at the same time, and a script to check the username or 
account against a previously saved record of which machine they last 
logged in from and reject the authentication attempt might be able to 
accomplish this. Any ideas much appreciated.

Sebastian