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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:54:37 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:54:37 +0000
commit97c26c1924b076ef23ebe4381558e8aa025712b2 (patch)
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parentInitial commit. (diff)
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Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+'\" t
+.\" Title: login.access
+.\" Author: Marek MichaƂkiewicz
+.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
+.\" Date: 11/08/2022
+.\" Manual: File Formats and Configuration Files
+.\" Source: shadow-utils 4.13
+.\" Language: English
+.\"
+.TH "LOGIN\&.ACCESS" "5" "11/08/2022" "shadow\-utils 4\&.13" "File Formats and Configuration"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+login.access \- login access control table
+.SH "DESCRIPTION"
+.PP
+The
+\fIlogin\&.access\fR
+file specifies (user, host) combinations and/or (user, tty) combinations for which a login will be either accepted or refused\&.
+.PP
+When someone logs in, the
+\fIlogin\&.access\fR
+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\&.
+.PP
+Each line of the login access control table has three fields separated by a ":" character:
+.PP
+\fIpermission\fR:\fIusers\fR:\fIorigins\fR
+.PP
+The first field should be a "\fI+\fR" (access granted) or "\fI\-\fR" (access denied) character\&. The second field should be a list of one or more login names, group names, or
+\fIALL\fR
+(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 "\&."),
+\fIALL\fR
+(always matches) or
+\fILOCAL\fR
+(matches any string that does not contain a "\&." character)\&. If you run NIS you can use @netgroupname in host or user patterns\&.
+.PP
+The
+\fIEXCEPT\fR
+operator makes it possible to write very compact rules\&.
+.PP
+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\*(Aqs primary group id value\&.
+.SH "FILES"
+.PP
+/etc/login\&.defs
+.RS 4
+Shadow password suite configuration\&.
+.RE
+.SH "SEE ALSO"
+.PP
+\fBlogin\fR(1)\&.