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NetBSD 6.1.5 - man page for login.access (netbsd section 5)

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LOGIN.ACCESS(5) 		     BSD File Formats Manual			  LOGIN.ACCESS(5)

NAME
     login.access -- login access control table

DESCRIPTION
     The login.access file specifies (user, host) combinations and/or (user, tty) combinations
     for which a login will be either accepted or refused.

     When someone logs in, the login.access is scanned for the first entry that matches the
     (user, host) combination, or, in case of non-networked logins, the first entry that matches
     the (user, tty) combination.  The permissions field of that table entry determines whether
     the login will be accepted or refused.

     Each line of the login access control table has three fields separated by a ':' character:
     permission:users:origins

     The first field should be a "+" (access granted) or "-" (access denied) character.  The sec-
     ond field should be a list of one or more login names, group names, or ALL (always matches).
     The third field should be a list of one or more tty names (for non-networked logins), host
     names, domain names (begin with "."), host addresses, internet network numbers (end with
     "."), ALL (always matches) or LOCAL (matches any string that does not contain a "." charac-
     ter).  If you run NIS you can use @netgroupname in host or user patterns.

     The EXCEPT operator makes it possible to write very compact rules.

     The group file is searched only when a name does not match that of the logged-in user.  Only
     groups are matched in which users are explicitly listed: the program does not look at a
     user's primary group id value.

FILES
     /etc/login.access	The login.access file resides in /etc.

SEE ALSO
     login(1), pam(8)

AUTHORS
     Guido van Rooij

BSD					  April 30, 1994				      BSD
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