Using samba you can turn off windows machine from remote linux machine.Use net rpc command in following way
net rpc SHUTDOWN -I-U < windows username>
For example to shutdown windows machine with ip 192.168.5.5 with username administrator , use following
by entering command
#net rpc user ADD -I (ip of window pc) (user name) (password) -U administrator
net rpc SHUTDOWN -I
For example to shutdown windows machine with ip 192.168.5.5 with username administrator , use following
root# net rpc SHUTDOWN -I 192.168.5.5 -U administrator
you can also create user remotely via linux pc
by entering command
#net rpc user ADD -I (ip of window pc) (user name) (password) -U administrator