How do I configure PAM to only allow particular users login via sshd?

Updated -

Release Found: Red Hat Enterprise Linux 5

PAM module pam_listfile.so can be used for this restriction.

Firstly, please create the allowed userlist file. Each line of the file is one username. Assume that the file name is /etc/sshd_userlist, and put the allowed user names in it:

redhat
root
user1

The...

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