named_selinux

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

named_selinux - Security Enhanced Linux Policy for the named processes

DESCRIPTION

SELinux Linux secures named (Berkeley internet name domain DNS server) processes via flexible mandatory access control.

BOOLEANS

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

If you want to allow BIND to write the master zone files. Generally this is used for dynamic DNS or zone transfers, you must turn on the named_write_master_zones boolean.

setsebool -P named_write_master_zones 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 lsP Policy governs the access confined processes have to these files. SELinux named policy is very flexible allowing users to setup their named processes in as secure a method as possible.

The following file types are defined for named:

named_cache_t

- Set files with the named_cache_t type, if you want to store the files under the /var/cache directory.

Paths:: /var/named/slaves(/.*)?, /var/named/chroot/var/named/data(/.*)?, /var/named/chroot/var/tmp(/.*)?, /var/named/data(/.*)?, /var/named/chroot/var/named/slaves(/.*)?, /var/named/dynamic(/.*)?, /var/named/chroot/var/named/dynamic(/.*)?

named_checkconf_exec_t

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

named_conf_t

- Set files with the named_conf_t type, if you want to treat the files as named configuration data, usually stored under the /etc directory.

Paths:: /var/named/chroot/etc/named.root.hints, /var/named/chroot(/.*)?, /var/named/named.ca, /etc/unbound(/.*)?, /var/named/chroot/etc/named.caching-nameserver.conf, /etc/named.root.hints, /var/named/chroot/etc/named.rfc1912.zones, /etc/named.rfc1912.zones, /etc/named.caching-nameserver.conf, /etc/named.conf, /var/named/chroot/var/named/named.ca, /var/named/chroot/etc/named.conf, /etc/rndc.*

named_exec_t

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

Paths:: /usr/sbin/unbound, /usr/sbin/named, /usr/sbin/lwresd

named_initrc_exec_t

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

Paths:: /etc/rc.d/init.d/named, /etc/rc.d/init.d/unbound

named_keytab_t

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

named_log_t

- Set files with the named_log_t type, if you want to treat the data as named log data, usually stored under the /var/log directory.

Paths:: /var/log/named.*, /var/named/chroot/var/log/named.*

named_tmp_t

- Set files with the named_tmp_t type, if you want to store named temporary files in the /tmp directories.

named_var_run_t

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

Paths:: /var/named/chroot/var/run/named.*, /var/run/ndc, /var/run/bind(/.*)?, /var/run/named(/.*)?, /var/run/unbound(/.*)?

named_zone_t

- Set files with the named_zone_t type, if you want to treat the files as named zone data.

Paths:: /var/named/chroot/var/named(/.*)?, /var/named(/.*)?

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

The following process types are defined for named:

named_t, namespace_init_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 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 autogenerated by genman.py.

This document was created by man2html, using the manual pages.
Time: 05:34:27 GMT, December 24, 2015