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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH pam_ldap 5 "21 Dec 2005" "SunOS 5.11" "Standards, Environments, and Macros" .SH NAME pam_ldap \- authentication and account management PAM module for LDAP .SH SYNOPSIS .LP .nf \fB/usr/lib/security/pam_ldap.so.1\fR .fi .SH DESCRIPTION .sp .LP The \fBpam_ldap\fR module implements \fBpam_sm_authenticate\fR(3PAM) and \fBpam_sm_acct_mgmt\fR(3PAM), the functions that provide functionality for the PAM authentication and account management stacks. The \fBpam_ldap\fR module ties the authentication and account management functionality to the functionality of the supporting LDAP server. For authentication, \fBpam_ldap\fR can authenticate the user directly to any LDAP directory server by using any supported authentication mechanism, such as \fBDIGEST-MD5\fR. However, the account management component of \fBpam_ldap\fR will work only with the Sun Java System Directory Server. The server's user account management must be properly configured before it can be used by \fBpam_ldap\fR. Refer to the \fISun Java System Directory Server Administration Guide\fR for information on how to configure user account management, including password and account lockout policy. .sp .LP \fBpam_ldap\fR must be used in conjunction with the modules that support the UNIX authentication, password, and account management, which are \fBpam_authtok_get\fR(5), \fBpam_passwd_auth\fR(5), \fBpam_unix_account\fR(5), and \fBpam_unix_auth\fR(5). \fBpam_ldap\fR is designed to be stacked directly below these modules. If other modules are designed to be stacked in this manner, the modules can be stacked below the \fBpam_ldap\fR module. The Examples section shows how the UNIX modules are stacked with \fBpam_ldap\fR. When stacked together, the UNIX modules are used to control local accounts, such as \fBroot\fR. \fBpam_ldap\fR is used to control network accounts, that is, LDAP users. For the stacks to work, \fBpam_unix_auth\fR, \fBpam_unix_account\fR, and \fBpam_passwd_auth\fR must be configured with the \fBbinding\fR control flag and the \fBserver_policy\fR option. This configuration allows local account override of a network account. .SS "LDAP Authentication Module" .sp .LP The LDAP authentication module verifies the identity of a user. The \fBpam_sm_authenticate\fR(3PAM) function uses the password entered by the user to attempt to authenticate to the LDAP server. If successful, the user is authenticated. See NOTES for information on password prompting. .sp .LP The authentication method used is either defined in the client profile , or the authentication method is configured by using the \fBldapclient\fR(1M) command. To determine the authentication method to use, this module first attempts to use the authentication method that is defined, for service \fBpam_ldap\fR, for example, \fBserviceAuthenticationMethod:pam_ldap:sasl/DIGEST-MD5\fR. If no authentication method is defined, \fBpam_ldap\fR uses the default authentication method. If neither are set, the authentication fails. This module skips the configured authentication method if the authentication method is set to \fBnone\fR. .sp .LP The following options can be passed to the LDAP service module: .sp .ne 2 .mk .na \fB\fBdebug\fR\fR .ad .RS 10n .rt \fBsyslog\fR(3C) debugging information at \fBLOG_DEBUG\fR level. .RE .sp .ne 2 .mk .na \fB\fBnowarn\fR\fR .ad .RS 10n .rt Turn off warning messages. .RE .sp .LP These options are case sensitive and must be used exactly as presented here. .SS "LDAP Account Management Module" .sp .LP The LDAP account management module validates the user's account. The \fBpam_sm_acct_mgmt\fR(3PAM) function authenticates to the LDAP server to verify that the user's password has not expired, or that the user's account has not been locked. In the event that there is no user authentication token (\fBPAM_AUTHTOK\fR) available, the \fBpam_sm_acct_mgmt\fR(3PAM) function attempts to retrieve the user's account status without authenticating to the LDAP server as the user logging in. This procedure will succeed only if the LDAP server is Sun Java System Directory server 5.2 patch 4 or newer. The following options can be passed to the LDAP service module: .sp .ne 2 .mk .na \fB\fBdebug\fR\fR .ad .RS 10n .rt \fBsyslog\fR(3C) debugging information at \fBLOG_DEBUG\fR level. .RE .sp .ne 2 .mk .na \fB\fBnowarn\fR\fR .ad .RS 10n .rt Turn off warning messages. .RE .sp .LP These options are case sensitive, and the options must be used exactly as presented here. .SS "LDAP Password Management Module" .sp .LP LDAP password management is no longer supported by \fBpam_ldap\fR. Use \fBpam_authtok_store\fR(5) instead of \fBpam_ldap\fR for password change. \fBpam_authtok_store\fR(5) handles both the local and LDAP accounts and updates the passwords in all the repositories configured by \fBnsswitch.conf\fR(4). .SH ERRORS .sp .LP The authentication service returns the following error codes: .sp .ne 2 .mk .na \fB\fBPAM_SUCCESS\fR\fR .ad .RS 20n .rt The uthentication was successful. .RE .sp .ne 2 .mk .na \fB\fBPAM_MAXTRIES\fR\fR .ad .RS 20n .rt The maximum number of authentication attempts was exceeded. .RE .sp .ne 2 .mk .na \fB\fBPAM_AUTH_ERR\fR\fR .ad .RS 20n .rt The authentication failed. .RE .sp .ne 2 .mk .na \fB\fBPAM_USER_UNKNOWN\fR\fR .ad .RS 20n .rt No account is present for the user. .RE .sp .ne 2 .mk .na \fB\fBPAM_BUF_ERR\fR\fR .ad .RS 20n .rt A memory buffer error occurred. .RE .sp .ne 2 .mk .na \fB\fBPAM_SYSTEM_ERR\fR\fR .ad .RS 20n .rt A system error occurred. .RE .sp .ne 2 .mk .na \fB\fBPAM_IGNORE\fR\fR .ad .RS 20n .rt The user's account was inactivated. .RE .sp .LP The account management service returns the following error codes: .sp .ne 2 .mk .na \fB\fBPAM_SUCCESS\fR\fR .ad .RS 24n .rt The user was allowed access to the account. .RE .sp .ne 2 .mk .na \fB\fBPAM_NEW_AUTHTOK_REQD\fR\fR .ad .RS 24n .rt A new authentication token is required. .RE .sp .ne 2 .mk .na \fB\fBPAM_ACCT_EXPIRED\fR\fR .ad .RS 24n .rt The user account has expired. .RE .sp .ne 2 .mk .na \fB\fBPAM_PERM_DENIED\fR\fR .ad .RS 24n .rt The user was denied access to the account at this time. .RE .sp .ne 2 .mk .na \fB\fBPAM_USER_UNKNOWN\fR\fR .ad .RS 24n .rt No account is present for the user. .RE .sp .ne 2 .mk .na \fB\fBPAM_BUF_ERROR\fR\fR .ad .RS 24n .rt A memory buffer error occurred. .RE .sp .ne 2 .mk .na \fB\fBPAM_SYSTEM_ERR\fR\fR .ad .RS 24n .rt A system error occurred. .RE .SH EXAMPLES .LP \fBExample 1 \fRUsing \fBpam_ldap\fR With Authentication\fB\fR .sp .LP The following is a configuration for the login service when using \fBpam_ldap\fR. The service name \fBlogin\fR can be substituted for any other authentication service such as \fBdtlogin\fR or \fBsu\fR. Lines that begin with the # symbol are comments and are ignored. .sp .in +2 .nf # Authentication management for login service is stacked. # If pam_unix_auth succeeds, pam_ldap is not invoked. # The control flag "binding" provides a local overriding # remote (LDAP) control. The "server_policy" option is used # to tell pam_unix_auth.so.1 to ignore the LDAP users. login auth requisite pam_authtok_get.so.1 login auth required pam_dhkeys.so.1 login auth required pam_unix_cred.so.1 login auth binding pam_unix_auth.so.1 server_policy login auth required pam_ldap.so.1 .fi .in -2 .LP \fBExample 2 \fRUsing \fBpam_ldap\fR With Account Management .sp .LP The following is a configuration for account management when using \fBpam_ldap\fR. Lines that begin with the # symbol are comments and are ignored. .sp .in +2 .nf # Account management for all services is stacked # If pam_unix_account succeeds, pam_ldap is not invoked. # The control flag "binding" provides a local overriding # remote (LDAP) control. The "server_policy" option is used # to tell pam_unix_account.so.1 to ignore the LDAP users. other account requisite pam_roles.so.1 other account binding pam_unix_account.so.1 server_policy other account required pam_ldap.so.1 .fi .in -2 .LP \fBExample 3 \fRUsing \fBpam_authtok_store\fR With Password Management For Both Local and LDAP Accounts .sp .LP The following is a configuration for password management when using \fBpam_authtok_store\fR. Lines that begin with the # symbol are comments and are ignored. .sp .in +2 .nf # Password management (authentication) # The control flag "binding" provides a local overriding # remote (LDAP) control. The server_policy option is used # to tell pam_passwd_auth.so.1 to ignore the LDAP users. passwd auth binding pam_passwd_auth.so.1 server_policy passwd auth required pam_ldap.so.1 # Password management (updates) # This updates passwords stored both in the local /etc # files and in the LDAP directory. The "server_policy" # option is used to tell pam_authtok_store to # follow the LDAP server's policy when updating # passwords stored in the LDAP directory other password required pam_dhkeys.so.1 other password requisite pam_authtok_get.so.1 other password requisite pam_authtok_check.so.1 other password required pam_authtok_store.so.1 server_policy .fi .in -2 .SH FILES .sp .ne 2 .mk .na \fB\fB/var/ldap/ldap_client_file\fR\fR .ad .br .na \fB\fB/var/ldap/ldap_client_cred\fR\fR .ad .RS 30n .rt The LDAP configuration files of the client. Do not manually modify these files, as these files might not be human readable. Use \fBldapclient\fR(1M) to update these files. .RE .sp .ne 2 .mk .na \fB\fB/etc/pam.conf\fR\fR .ad .RS 30n .rt PAM configuration file. .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .sp .TS tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPEATTRIBUTE VALUE _ Interface StabilityEvolving _ MT-LevelMT-Safe with exceptions .TE .SH SEE ALSO .sp .LP \fBldap\fR(1), \fBidsconfig\fR(1M), \fBldap_cachemgr\fR(1M), \fBldapclient\fR(1M), \fBlibpam\fR(3LIB), \fBpam\fR(3PAM), \fBpam_sm_acct_mgmt\fR(3PAM), \fBpam_sm_authenticate\fR(3PAM), \fBpam_sm_chauthtok\fR(3PAM), \fBpam_sm_close_session\fR(3PAM), \fBpam_sm_open_session\fR(3PAM), \fBpam_sm_setcred\fR(3PAM), \fBsyslog\fR(3C), \fBpam.conf\fR(4), \fBattributes\fR(5), \fBpam_authtok_check\fR(5), \fBpam_authtok_get\fR(5), \fBpam_authtok_store\fR(5), \fBpam_passwd_auth\fR(5), \fBpam_unix_account\fR(5), \fBpam_unix_auth\fR(5) .SH NOTES .sp .LP The interfaces in \fBlibpam\fR(3LIB) are MT-Safe only if each thread within the multi-threaded application uses its own \fBPAM\fR handle. .sp .LP The previously supported \fBuse_first_pass\fR and \fBtry_first_pass\fR options are obsolete in this version, are no longer needed, can safely be removed from \fBpam.conf\fR(4), and are silently ignored. They might be removed in a future release. Password prompting must be provided for by stacking \fBpam_authtok_get\fR(5) before \fBpam_ldap\fR in the \fBauth\fR and \fBpassword\fR module stacks and \fBpam_passwd_auth\fR(5) in the \fBpasswd\fR service \fBauth\fR stack (as described in the EXAMPLES section). The previously supported password update function is replaced in this release by the previously recommended use of \fBpam_authtok_store\fR with the \fBserver_policy\fR option (as described in the EXAMPLES section). .sp .LP The functions: \fBpam_sm_setcred\fR(3PAM), \fBpam_sm_chauthtok\fR(3PAM), \fBpam_sm_open_session\fR(3PAM), and \fBpam_sm_close_session\fR(3PAM) do nothing and return \fBPAM_IGNORE\fR in \fBpam_ldap\fR.