courier_selinux(8) courier SELinux Policy documentation courier_selinux(8)

NAME courier_selinux - Security Enhanced Linux Policy for the courier pro- cesses

DESCRIPTION SELinux Linux secures courier (Courier IMAP and POP3 email servers) processes via flexible mandatory access control.

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 courier policy is very flexible allowing users to setup their courier processes in as secure a method as possible.

The following file types are defined for courier:

courier_authdaemon_exec_t

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

courier_etc_t

- Set files with the courier_etc_t type, if you want to store courier files in the /etc directories.

Paths: /etc/courier(/.*)?, /usr/lib(64)?/courier/rootcerts(/.*)?

courier_exec_t

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

Paths: /usr/lib(64)?/courier/courierlogger, /usr/sbin/courierlogger, /usr/sbin/courierldapaliasd, /usr/lib(64)?/courier/courier/.*, /usr/lib(64)?/courier/courierldapaliasd

courier_pcp_exec_t

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

courier_pop_exec_t

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

Paths: /usr/lib(64)?/courier/courier/courierpop.*, /usr/lib(64)?/courier/courier/imaplogin, /usr/lib(64)?/courier/pop3d, /usr/lib(64)?/courier/imapd, /usr/bin/imapd

courier_spool_t

- Set files with the courier_spool_t type, if you want to store the courier files under the /var/spool directory.

Paths: /var/spool/courier(/.*)?, /var/spool/authdaemon(/.*)?

courier_sqwebmail_exec_t

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

courier_tcpd_exec_t

- Set files with the courier_tcpd_exec_t type, if you want to transi- tion an executable to the courier_tcpd_t domain.

Paths: /usr/lib(64)?/courier/couriertcpd, /usr/sbin/couriertcpd

courier_var_lib_t

- Set files with the courier_var_lib_t type, if you want to store the courier files under the /var/lib directory.

courier_var_run_t

- Set files with the courier_var_run_t type, if you want to store the courier 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.

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 courier policy is very flexible allowing users to setup their courier processes in as secure a method as possible.

The following process types are defined for courier:

courier_sqwebmail_t, courier_tcpd_t, courier_authdaemon_t, courier_pcp_t, courier_pop_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.

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 pol- icy modules.

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

AUTHOR This manual page was autogenerated by genman.py.

SEE ALSO selinux(8), courier(8), semanage(8), restorecon(8), chcon(1)

dwalsh@redhat.com courier courier_selinux(8)