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I have a host that is using NIS for user authentication. Both user A and B are valid user. But how to only allow user A login the host via ssh?

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up vote 2 down vote accepted

SSH is configured via the file /etc/ssh/sshd_config.

See the above documentation as regarding the parameters AllowGroups, AllowUsers, DenyGroups, DenyUsers.

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Thanks. It works! – Kane Sep 21 '10 at 6:30

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