12.1. Samba and PAM13.1. Samba and PAM

A number of Unix systems (eg: Sun Solaris), as well as the @@ -119,6 +119,45 @@ or by editing individual files that are located in /etc/pam.d.

If the PAM authentication module (loadable link library file) is located in the + default location then it is not necessary to specify the path. In the case of + Linux, the default location is /lib/security. If the module + is located other than default then the path may be specified as: + +

	eg: "auth       required      /other_path/pam_strange_module.so"
+

The following is an example

#%PAM-1.0
-# The PAM configuration file for the `login' service
-#
-auth 		required	pam_securetty.so
-auth 		required	pam_nologin.so
-# auth 		required	pam_dialup.so
-# auth 		optional	pam_mail.so
-auth		required	pam_pwdb.so shadow md5
-# account    	requisite  	pam_time.so
-account		required	pam_pwdb.so
-session		required	pam_pwdb.so
-# session 	optional	pam_lastlog.so
-# password   	required   	pam_cracklib.so retry=3
-password	required	pam_pwdb.so shadow md5

#%PAM-1.0 + # The PAM configuration file for the `login' service + # + auth required pam_securetty.so + auth required pam_nologin.so + # auth required pam_dialup.so + # auth optional pam_mail.so + auth required pam_pwdb.so shadow md5 + # account requisite pam_time.so + account required pam_pwdb.so + session required pam_pwdb.so + # session optional pam_lastlog.so + # password required pam_cracklib.so retry=3 + password required pam_pwdb.so shadow md5 PAM allows use of replacable modules. Those available on a @@ -155,19 +194,19 @@ sample system include: $ /bin/ls /lib/security -pam_access.so pam_ftp.so pam_limits.so -pam_ncp_auth.so pam_rhosts_auth.so pam_stress.so -pam_cracklib.so pam_group.so pam_listfile.so -pam_nologin.so pam_rootok.so pam_tally.so -pam_deny.so pam_issue.so pam_mail.so -pam_permit.so pam_securetty.so pam_time.so -pam_dialup.so pam_lastlog.so pam_mkhomedir.so -pam_pwdb.so pam_shells.so pam_unix.so -pam_env.so pam_ldap.so pam_motd.so -pam_radius.so pam_smbpass.so pam_unix_acct.so -pam_wheel.so pam_unix_auth.so pam_unix_passwd.so -pam_userdb.so pam_warn.so pam_unix_session.so $ /bin/ls /lib/security + pam_access.so pam_ftp.so pam_limits.so + pam_ncp_auth.so pam_rhosts_auth.so pam_stress.so + pam_cracklib.so pam_group.so pam_listfile.so + pam_nologin.so pam_rootok.so pam_tally.so + pam_deny.so pam_issue.so pam_mail.so + pam_permit.so pam_securetty.so pam_time.so + pam_dialup.so pam_lastlog.so pam_mkhomedir.so + pam_pwdb.so pam_shells.so pam_unix.so + pam_env.so pam_ldap.so pam_motd.so + pam_radius.so pam_smbpass.so pam_unix_acct.so + pam_wheel.so pam_unix_auth.so pam_unix_passwd.so + pam_userdb.so pam_warn.so pam_unix_session.so The following example for the login program replaces the use of @@ -230,13 +269,13 @@ source distribution. #%PAM-1.0 -# The PAM configuration file for the `login' service -# -auth required pam_smbpass.so nodelay -account required pam_smbpass.so nodelay -session required pam_smbpass.so nodelay -password required pam_smbpass.so nodelay #%PAM-1.0 + # The PAM configuration file for the `login' service + # + auth required pam_smbpass.so nodelay + account required pam_smbpass.so nodelay + session required pam_smbpass.so nodelay + password required pam_smbpass.so nodelay The following is the PAM configuration file for a particular @@ -247,13 +286,13 @@ CLASS="FILENAME" > #%PAM-1.0 -# The PAM configuration file for the `samba' service -# -auth required /lib/security/pam_pwdb.so nullok nodelay shadow audit -account required /lib/security/pam_pwdb.so audit nodelay -session required /lib/security/pam_pwdb.so nodelay -password required /lib/security/pam_pwdb.so shadow md5 #%PAM-1.0 + # The PAM configuration file for the `samba' service + # + auth required /lib/security/pam_pwdb.so nullok nodelay shadow audit + account required /lib/security/pam_pwdb.so audit nodelay + session required /lib/security/pam_pwdb.so nodelay + password required /lib/security/pam_pwdb.so shadow md5 In the following example the decision has been made to use the @@ -264,16 +303,36 @@ program. #%PAM-1.0 -# The PAM configuration file for the `samba' service -# -auth required /lib/security/pam_smbpass.so nodelay -account required /lib/security/pam_pwdb.so audit nodelay -session required /lib/security/pam_pwdb.so nodelay -password required /lib/security/pam_smbpass.so nodelay smbconf=/etc/samba.d/smb.conf #%PAM-1.0 + # The PAM configuration file for the `samba' service + # + auth required /lib/security/pam_smbpass.so nodelay + account required /lib/security/pam_pwdb.so audit nodelay + session required /lib/security/pam_pwdb.so nodelay + password required /lib/security/pam_smbpass.so nodelay smbconf=/etc/samba.d/smb.conf Note: PAM allows stacking of authentication mechanisms. It is +> PAM allows stacking of authentication mechanisms. It is also possible to pass information obtained within one PAM module through to the next module in the PAM stack. Please refer to the documentation for your particular system implementation for details regarding the specific @@ -290,14 +349,18 @@ CLASS="FILENAME" on the basis that it allows for easier administration. As with all issues in life though, every decision makes trade-offs, so you may want examine the PAM documentation for further helpful information.

12.1. Samba and PAM13.1. Samba and PAM

`12.2. Distributed Authentication13.2. Distributed Authentication`

`12.3. PAM Configuration in smb.conf13.3. PAM Configuration in smb.conf`