postgrey_selinux

Section: postgrey SELinux Policy documentation (8)
Updated: postgrey
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NAME

postgrey_selinux - Security Enhanced Linux Policy for the postgrey processes

DESCRIPTION

SELinux Linux secures postgrey (Postfix grey-listing server) 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 lsP Policy governs the access confined processes have to these files. SELinux postgrey policy is very flexible allowing users to setup their postgrey processes in as secure a method as possible.

The following file types are defined for postgrey:

postgrey_etc_t

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

postgrey_exec_t

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

postgrey_initrc_exec_t

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

postgrey_spool_t

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

postgrey_var_lib_t

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

postgrey_var_run_t

- Set files with the postgrey_var_run_t type, if you want to store the postgrey files under the /run directory.

Paths:: /var/run/postgrey.pid, /var/run/postgrey(/.*)?

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.

PORT TYPES

SELinux defines port types to represent TCP and UDP ports.

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

The following port types are defined for postgrey:

postgrey_port_t

Default Defined Ports: tcp 8021

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

The following process types are defined for postgrey:

postgrey_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 policy modules.

semanage port can also be used to manipulate the port definitions

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

AUTHOR

This manual page was autogenerated by genman.py.

This document was created by man2html, using the manual pages.
Time: 05:34:28 GMT, December 24, 2015