disable certain users to login with ssh

• ​＠IT：sshの利用をユーザー単位で許可／不許可するには

• /etc/pam.d/sshd

  @@ -15,7 +15,7 @@
  
   # Uncomment and edit /etc/security/access.conf if you need to set complex
   # access limits that are hard to express in sshd_config.
  -# account  required     pam_access.so
  +account  required     pam_access.so
  
   # Standard Un*x authorization.
   @include common-account