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     login.access — login access control table


     The login.access file specifies on which ttys or from which hosts certain
     users are allowed to login.

     At login, the /etc/login.access file is checked for the first entry that
     matches a specific user/host or user/tty combination. That entry can
     either allow or deny login access to that user.

     Each entry have three fields separated by colon:

     ·   The first field indicates the permission given if the entry matches.
         It can be either “+” (allow access) or “-” (deny access) .

     ·   The second field is a comma separated list of users or groups for
         which the current entry applies. NIS netgroups can used (if
         configured) if preceeded by @. The magic string ALL matches all
         users.  A group will match if the user is a member of that group, or
         it is the user's primary group.

     ·   The third field is a list of ttys, or network names. A network name
         can be either a hostname, a domain (indicated by a starting period),
         or a netgroup. As with the user list, ALL matches anything. LOCAL
         matches a string not containing a period.

     If the string EXCEPT is found in either the user or from list, the rest
     of the list are exceptions to the list before EXCEPT.


     If there's a user and a group with the same name, there is no way to make
     the group match if the user also matches.




     The login_access() function was written by Wietse Venema. This manual
     page was written for Heimdal.

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