1PAM_ACCESS(8) Linux-PAM Manual PAM_ACCESS(8)
2
6 pam_access - PAM module for logdaemon style login access control
7
9 pam_access.so [debug] [nodefgroup] [noaudit] [accessfile=file]
10 [fieldsep=sep] [listsep=sep]
11
13 The pam_access PAM module is mainly for access management. It provides
14 logdaemon style login access control based on login names, host or
15 domain names, internet addresses or network numbers, or on terminal
16 line names, X $DISPLAY values, or PAM service names in case of
17 non-networked logins.
18 By default rules for access management are taken from config file
20 /etc/security/access.conf if you don't specify another file. Then
21 individual *.conf files from the /etc/security/access.d/ directory are
22 read. The files are parsed one after another in the order of the system
23 locale. The effect of the individual files is the same as if all the
24 files were concatenated together in the order of parsing. This means
25 that once a pattern is matched in some file no further files are
26 parsed. If a config file is explicitly specified with the accessfile
27 option the files in the above directory are not parsed.
28 If Linux PAM is compiled with audit support the module will report when
30 it denies access based on origin (host, tty, etc.).
31
33 accessfile=/path/to/access.conf
34 Indicate an alternative access.conf style configuration file to
35 override the default. This can be useful when different services
36 need different access lists.
37 debug
39 A lot of debug information is printed with syslog(3).
40 noaudit
42 Do not report logins from disallowed hosts and ttys to the audit
43 subsystem.
44 fieldsep=separators
46 This option modifies the field separator character that pam_access
47 will recognize when parsing the access configuration file. For
48 example: fieldsep=| will cause the default `:' character to be
49 treated as part of a field value and `|' becomes the field
50 separator. Doing this may be useful in conjunction with a system
51 that wants to use pam_access with X based applications, since the
52 PAM_TTY item is likely to be of the form "hostname:0" which
53 includes a `:' character in its value. But you should not need
54 this.
55 listsep=separators
57 This option modifies the list separator character that pam_access
58 will recognize when parsing the access configuration file. For
59 example: listsep=, will cause the default ` ' (space) and `\t'
60 (tab) characters to be treated as part of a list element value and
61 `,' becomes the only list element separator. Doing this may be
62 useful on a system with group information obtained from a Windows
63 domain, where the default built-in groups "Domain Users", "Domain
64 Admins" contain a space.
65 nodefgroup
67 User tokens which are not enclosed in parentheses will not be
68 matched against the group database. The backwards compatible
69 default is to try the group database match even for tokens not
70 enclosed in parentheses.
71
73 All module types (auth, account, password and session) are provided.
74
76 PAM_SUCCESS
77 Access was granted.
78 PAM_PERM_DENIED
80 Access was not granted.
81 PAM_IGNORE
83 pam_setcred was called which does nothing.
84 PAM_ABORT
86 Not all relevant data or options could be gotten.
87 PAM_USER_UNKNOWN
89 The user is not known to the system.
90
92 /etc/security/access.conf
93 Default configuration file
94
96 access.conf(5), pam.d(5), pam(8).
97
99 The logdaemon style login access control scheme was designed and
100 implemented by Wietse Venema. The pam_access PAM module was developed
101 by Alexei Nogin <alexei@nogin.dnttm.ru>. The IPv6 support and the
102 network(address) / netmask feature was developed and provided by Mike
103 Becher <mike.becher@lrz-muenchen.de>.
104Linux-PAM Manual 11/25/2020 PAM_ACCESS(8)