restrict ssh users to single user group
i am running a vanilla copy of ubuntu 7.10. i installed sshd and would like to restrict the users able to login to the ssh server to a specific group of users. is it possible to specify a single user group in a conf file somewhere to accomplish this task? i have created a user to run a teamspeak server, and i noticed this user can login to the ssh server. i have already installed denyhosts on this machine.
thanks in advance for your help.