Access control for a NFS server

Hi !
As i read a lot of competent postings on this list, maybe one of you can
adwise me on this qustion.

How can i make sure nobody unplugs a worstation, plugs in a laptop, uses
the workstation's MAC, mounts /home from the nfs server, and does evil
things to the homedirs ?
Like, verify some hostkey or something ?

Regards, Tobias

-- 
________ This message is made of 100 % recycled electrons
\..|     PGP Key: www.stud.uni-goettingen.de/~s242275/pgpkey.pub     (o_
.\.|--   Jabber:  te_linuxguru at jabber.fsinf.de            (o  (o  //\
..\|____ ICQ:     124557012                                  (/)_(/)_V_/