Security-Enhanced Linux secures the asterisk processes via flexible mandatory access control.
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd serve for the asterisk_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 asterisk_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 asterisk policy is very flexible allowing users to setup their asterisk processes in as secure a method as possible.
The following file types are defined for asterisk:
asterisk_etc_t
- Set files with the asterisk_etc_t type, if you want to store asterisk files in the /etc directories.
asterisk_exec_t
- Set files with the asterisk_exec_t type, if you want to transition an executable to the asterisk_t domain.
asterisk_initrc_exec_t
- Set files with the asterisk_initrc_exec_t type, if you want to transition an executable to the asterisk_initrc_t domain.
asterisk_log_t
- Set files with the asterisk_log_t type, if you want to treat the data as asterisk log data, usually stored under the /var/log directory.
asterisk_spool_t
- Set files with the asterisk_spool_t type, if you want to store the asterisk files under the /var/spool directory.
asterisk_tmp_t
- Set files with the asterisk_tmp_t type, if you want to store asterisk temporary files in the /tmp directories.
asterisk_tmpfs_t
- Set files with the asterisk_tmpfs_t type, if you want to store asterisk files on a tmpfs file system.
asterisk_var_lib_t
- Set files with the asterisk_var_lib_t type, if you want to store the asterisk files under the /var/lib directory.
asterisk_var_run_t
- Set files with the asterisk_var_run_t type, if you want to store the asterisk 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 types associated with a port by using the following command:
semanage port -l
Policy governs the access confined processes have to these ports. SELinux asterisk policy is very flexible allowing users to setup their asterisk processes in as secure a method as possible.
The following port types are defined for asterisk:
Default Defined Ports: tcp 1720 udp 2427,2727,4569
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux asterisk policy is very flexible allowing users to setup their asterisk processes in as secure a method as possible.
The following process types are defined for asterisk:
asterisk_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 asterisk_t can manage files labeled with the