1AUTHCONFIG(8) System Manager's Manual AUTHCONFIG(8)
2
6 authconfig, authconfig-tui - an interface for configuring system
7 authentication resources
8
10 authconfig
11 [options] {--update|--updateall|--test|--probe|--restorebackup
12 <name>|--savebackup <name>|--restorelastbackup}
13
15 authconfig provides a simple method of configuring /etc/sysconfig/net‐
16 work to handle NIS, as well as /etc/passwd and /etc/shadow, the files
17 used for shadow password support. Basic LDAP, Kerberos 5, and Winbind
18 client configuration is also provided.
19 If --test action is specified, authconfig can be run by users other
21 then root, and any configuration changes are not saved but printed
22 instead. If --update action is specified, authconfig must be run by
23 root (or through console helper), and configuration changes are saved.
24 Only the files affected by the configuration changes are overwritten.
25 If --updateall action is specified, authconfig must be run by root (or
26 through console helper), and all configuration files are written. The
27 --probe action instructs authconfig to use DNS and other means to guess
28 at configuration information for the current host, print its guesses if
29 it finds them to standard output, and exit.
30 The --restorebackup, --savebackup, and --restorelastbackup actions pro‐
32 vide a possibility to save and later restore a backup of configuration
33 files which authconfig modifies. Authconfig also saves an automatic
34 backup of configuration files before every configuration change. This
35 special backup can be restored by the --restorelastbackup action.
36 If --nostart is specified (which is what the install program does),
38 ypbind or other daemons will not be started or stopped immediately fol‐
39 lowing program execution, but only enabled to start or stop at boot
40 time.
41 The --enablenis, --enableldap, --enablewinbind, and --enablehesiod
43 options are used to configure user information services in /etc/nss‐
44 witch.conf, the --enablecache option is used to configure naming ser‐
45 vices caching, and the --enableshadow, --enableldapauth, --enablekrb5,
46 and --enablewinbindauth options are used to configure authentication
47 functions via /etc/pam.d/system-auth. Each --enable has a matching
48 --disable option that disables the service if it is already enabled.
49 The respective services have parameters which configure their server
50 names etc.
51 The algorithm used for storing new password hashes can be specified by
53 the --passalgo option which takes one of the following possible values
54 as a parameter: descrypt, bigcrypt, md5, sha256, and sha512.
55 The --enablelocauthorize option allows to bypass checking network
57 authentication services for authorization and the --enablesysnetauth
58 allows authentication of system accounts (with uid < 500) by these ser‐
59 vices.
60 When the configuration settings allow use of SSSD for user information
62 services and authentication, SSSD will be automatically used instead of
63 the legacy services and the SSSD configuration will be set up so there
64 is a default domain populated with the settings required to connect the
65 services. The --enablesssd and --enablesssdauth options force adding
66 SSSD to /etc/nsswitch.conf and /etc/pam.d/system-auth, but they do not
67 set up the domain in the SSSD configuration files. The SSSD configura‐
68 tion has to be set up manually. The allowed configuration of services
69 for SSSD are: LDAP for user information (--enableldap) and either LDAP
70 (--enableldapauth), or Kerberos (--enablekrb5) for authentication.
71 In case SSSD does not support some feature of the legacy services that
73 are required for the site configuration, the use of the legacy services
74 can be forced by setting FORCELEGACY=yes in /etc/sysconfig/authconfig.
75 The list of options mentioned here in the manual page is not exhaus‐
77 tive, please refer to authconfig --help for the complete list of the
78 options.
79 The authconfig-tui supports all options of authconfig but it implies
81 --update as the default action. Its window contains a Cancel button by
82 default. If --back option is specified at run time, a Back button is
83 presented instead. If --kickstart is specified, no interactive screens
84 will be seen. The values the program will use will be those specified
85 by the other options (--passalgo, --enableshadow, etc.).
86 For namelist you may substitute either a single name or a comma-sepa‐
88 rated list of names.
89
91 The authconfig-tui is deprecated. No new configuration settings will be
92 supported by its text user interface. Use system-config-authentication
93 GUI application or the command line options instead.
94 The SSSD service is enabled and possibly started by authconfig when at
96 least two of the following three conditions are met:
97 1) /etc/sssd/sssd.conf file exists (or is configured via the implicit
98 SSSD support)
99 2) SSSD authentication is enabled (pam_sss.so is used in PAM configura‐
100 tion)
101 3) SSSD is enabled for user identity (nsswitch.conf contains sss)
102 When --update action is used the enablement or disablement and possible
104 restart of services happens only in case the changed configuration
105 options affect the service to be restarted. This means that if for
106 example the ypbind service is enabled with authconfig --update --nos‐
107 tart --enablenis but not started and you run the same command without
108 the --nostart later the ypbind service will not be started because no
109 configuration change affecting ypbind happened.
110
113 authconfig returns 0 on success, 2 on error.
114 authconfig-tui returns 0 on success, 2 on error, and 1 if the user can‐
116 celled the program (by using either the Cancel or Back button).
117
120 /etc/sysconfig/authconfig
121 Used to track whether or not particular authentication
122 mechanisms are enabled. Currently includes variables
123 named USESHADOW, USEMD5, USEKERBEROS, USELDAPAUTH, USESM‐
124 BAUTH, USEWINBIND, USEWINBINDAUTH, USEHESIOD, USENIS,
125 USELDAP, and others.
126 /etc/passwd
127 /etc/shadow
128 Used for shadow password support.
129 /etc/yp.conf
130 Configuration file for NIS support.
131 /etc/sysconfig/network
132 Another configuration file for NIS support.
133 /etc/ldap.conf
134 /etc/nss_ldap.conf
135 /etc/pam_ldap.conf
136 /etc/nslcd.conf
137 /etc/openldap/ldap.conf
138 Used to configure nss_ldap, pam_ldap, nslcd, and the
139 OpenLDAP library. Only the files already existing on the
140 system are modified.
141 /etc/krb5.conf
142 Used to configure Kerberos 5.
143 /etc/hesiod.conf
144 Used to configure Hesiod.
145 /etc/samba/smb.conf
146 Used to configure winbind authentication.
147 /etc/nsswitch.conf
148 Used to configure user information services.
149 /etc/login.defs
150 Used to configure parameters of user accounts (minimum
151 UID of a regular user, password hashing algorithm).
152 /etc/pam.d/system-auth
153 Common PAM configuration for system services which
154 include it using the include directive. It is created as
155 symlink and not relinked if it points to another file.
156 /etc/pam.d/system-auth-ac
157 Contains the actual PAM configuration for system services
158 and is the default target of the /etc/pam.d/system-auth
159 symlink. If a local configuration of PAM is created (and
160 symlinked from system-auth file) this file can be
161 included there.
162
165 authconfig-gtk(8), system-auth-ac(5), passwd(5), shadow(5),
166 pwconv(1), domainname(1), ypbind(8), nsswitch.conf(5),
167 smb.conf(5), sssd(8)
168
171 Nalin Dahyabhai <nalin@redhat.com>, Preston Brown <pbrown@redhat.com>,
172 Matt Wilson <msw@redhat.com>, Tomas Mraz <tmraz@redhat.com>
173Red Hat, Inc. 22 July 2011 AUTHCONFIG(8)