ssh users
 

how to add new user to ssh server?

do "ssh" need "rshd" running on remote computer?

you don't need to add a user specifically for ssh. Assuming the machine you're loggin g into has ssh server installed the command you need is
this will let you log in as any user on the remote machine.

If I understand you correctly, you're also asking if ssh need rsh, correct? No, it doesn't, ssh is completely independant of rsh, and a better alternative. Whenever possible, you should be using ssh.

Beware though. If there are users with very simple passwords (like my father and sister) your computer will be easy to "hack". I happened to me. I now make ssh only available to me (because they don't use it anyway).

Does ssh works same way in the windows enviroment?

I can't see how it would. They pretty much phased out anything dos. Maybe with Cygwin or something like that but I haven't a clue about that. Also, I don't think it's possible to run multiple sessions. Just the graphical one on the machine. But again I'm not sure.

is it some way to configure ssh so that just one user can access to ssh to remote computer?

you can use PuTTy in Windows as an ssh client.As far as I know there is no way to ssh into a windows box though. Yes, there is a way to configure ssh so only one user can access it. I think it's in one of the config files.