saslauthd_selinux(8) - Linux man page

Name

saslauthd_selinux - Security Enhanced Linux Policy for the saslauthd processes

Description

Security-Enhanced Linux secures the saslauthd processes via flexible mandatory access control.

The saslauthd processes execute with the saslauthd_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep saslauthd_t

Entrypoints

The saslauthd_t SELinux type can be entered via the "saslauthd_exec_t" file type. The default entrypoint paths for the saslauthd_t domain are the following:"

/usr/sbin/saslauthd

Process Types

SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to ps

Policy governs the access confined processes have to files. SELinux saslauthd policy is very flexible allowing users to setup their saslauthd processes in as secure a method as possible.

The following process types are defined for saslauthd:

saslauthd_t

Note: semanage permissive -a saslauthd_t

can be used to make the process type saslauthd_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

Booleans

SELinux policy is customizable based on least access required. saslauthd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run saslauthd with the tightest access possible.

If you want to allow sasl to read shadow, you must turn on the allow_saslauthd_read_shadow boolean.

setsebool -P allow_saslauthd_read_shadow 1

If you want to allow sasl to read shadow, you must turn on the allow_saslauthd_read_shadow boolean.

setsebool -P allow_saslauthd_read_shadow 1

File Contexts

SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

Policy governs the access confined processes have to these files. SELinux saslauthd policy is very flexible allowing users to setup their saslauthd processes in as secure a method as possible.

The following file types are defined for saslauthd:

saslauthd_exec_t

- Set files with the saslauthd_exec_t type, if you want to transition an executable to the saslauthd_t domain.

saslauthd_initrc_exec_t

- Set files with the saslauthd_initrc_exec_t type, if you want to transition an executable to the saslauthd_initrc_t domain.

saslauthd_keytab_t

- Set files with the saslauthd_keytab_t type, if you want to treat the files as kerberos keytab files.

saslauthd_var_run_t

- Set files with the saslauthd_var_run_t type, if you want to store the saslauthd 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.

Managed Files

The SELinux process type saslauthd_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.

faillog_t

/var/log/btmp.*

/var/log/faillog.*

/var/log/tallylog.*

/var/run/faillock(/.*)?

initrc_tmp_t
krb5_host_rcache_t

/var/cache/krb5rcache(/.*)?

/var/tmp/host_0

/var/tmp/HTTP_23

lastlog_t

/var/log/lastlog.*

mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

pcscd_var_run_t

/var/run/pcscd.events(/.*)?

/var/run/pcscd.pid

/var/run/pcscd.pub

/var/run/pcscd.comm

root_t

/initrd

saslauthd_var_run_t

/var/run/saslauthd(/.*)?

security_t
tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

Commands

semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove policy modules.

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux policy settings.

Author

This manual page was auto-generated using sepolicy manpage by mgrepl.