NAME¶
pam_access - PAM module for logdaemon style login access
control
SYNOPSIS¶
pam_access.so [debug] [nodefgroup] [noaudit]
[accessfile=file] [fieldsep=sep] [listsep=sep]
DESCRIPTION¶
The pam_access PAM module is mainly for access management. It
provides logdaemon style login access control based on login names, host or
domain names, internet addresses or network numbers, or on terminal line
names, X $DISPLAY values, or PAM service names in case of
non-networked logins.
By default rules for access management are taken from config file
/etc/security/access.conf if you don't specify another file.
If Linux PAM is compiled with audit support the module will report
when it denies access based on origin (host, tty, etc.).
OPTIONS¶
accessfile=/path/to/access.conf
Indicate an alternative access.conf style configuration
file to override the default. This can be useful when different services need
different access lists.
debug
A lot of debug information is printed with
syslog(3).
noaudit
Do not report logins from disallowed hosts and ttys to
the audit subsystem.
fieldsep=separators
This option modifies the field separator character that
pam_access will recognize when parsing the access configuration file. For
example: fieldsep=| will cause the default `:' character to be treated
as part of a field value and `|' becomes the field separator. Doing this may
be useful in conjunction with a system that wants to use pam_access with X
based applications, since the PAM_TTY item is likely to be of the form
"hostname:0" which includes a `:' character in its value. But you
should not need this.
listsep=separators
This option modifies the list separator character that
pam_access will recognize when parsing the access configuration file. For
example: listsep=, will cause the default ` ' (space) and `\t' (tab)
characters to be treated as part of a list element value and `,' becomes the
only list element separator. Doing this may be useful on a system with group
information obtained from a Windows domain, where the default built-in groups
"Domain Users", "Domain Admins" contain a space.
nodefgroup
User tokens which are not enclosed in parentheses will
not be matched against the group database. The backwards compatible default is
to try the group database match even for tokens not enclosed in
parentheses.
MODULE TYPES PROVIDED¶
All module types (auth, account, password and
session) are provided.
RETURN VALUES¶
PAM_SUCCESS
Access was granted.
PAM_PERM_DENIED
Access was not granted.
PAM_IGNORE
pam_setcred was called which does nothing.
PAM_ABORT
Not all relevant data or options could be gotten.
PAM_USER_UNKNOWN
The user is not known to the system.
FILES¶
/etc/security/access.conf
Default configuration file
AUTHORS¶
The logdaemon style login access control scheme was designed and
implemented by Wietse Venema. The pam_access PAM module was developed by
Alexei Nogin <alexei@nogin.dnttm.ru>. The IPv6 support and the
network(address) / netmask feature was developed and provided by Mike Becher
<mike.becher@lrz-muenchen.de>.