Security-Enhanced Linux secures the winbind processes via flexible mandatory access control.
If you want to allow Apache to use mod_auth_ntlm_winbind, you must turn on the httpd_mod_auth_ntlm_winbind boolean.
setsebool -P httpd_mod_auth_ntlm_winbind 1
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd serve for the winbind_helper_t, winbind_t, you must turn on the authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the winbind_helper_t, winbind_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
You can see the context of a file using the -Z option to lsP Policy governs the access confined processes have to these files. SELinux winbind policy is very flexible allowing users to setup their winbind processes in as secure a method as possible.
The following file types are defined for winbind:
winbind_exec_t
- Set files with the winbind_exec_t type, if you want to transition an executable to the winbind_t domain.
winbind_helper_exec_t
- Set files with the winbind_helper_exec_t type, if you want to transition an executable to the winbind_helper_t domain.
winbind_log_t
- Set files with the winbind_log_t type, if you want to treat the data as winbind log data, usually stored under the /var/log directory.
winbind_var_run_t
- Set files with the winbind_var_run_t type, if you want to store the winbind files under the /run directory.
Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux winbind policy is very flexible allowing users to setup their winbind processes in as secure a method as possible.
The following process types are defined for winbind:
winbind_helper_t, winbind_t
Note: semanage permissive -a PROCESS_TYPE can be used to make a process type permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.
The SELinux user type winbind_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.
auth_cache_t
/var/cache/coolkey(/.*)?
ctdbd_var_lib_t
/etc/ctdb(/.*)?
/var/ctdb(/.*)?
/var/ctdbd(/.*)?
/var/lib/ctdbd(/.*)?
faillog_t
/var/log/btmp.*
/var/run/faillock(/.*)?
/var/log/faillog
/var/log/tallylog
pcscd_var_run_t
/var/run/pcscd(/.*)?
/var/run/pcscd.events(/.*)?
/var/run/pcscd.pid
/var/run/pcscd.pub
/var/run/pcscd.comm
samba_log_t
/var/log/samba(/.*)?
samba_secrets_t
/etc/samba/