named_selinux(8)					       SELinux Policy named						  named_selinux(8)

NAME

       named_selinux - Security Enhanced Linux Policy for the named processes

DESCRIPTION

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

       The  named  processes  execute with the named_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 named_t

ENTRYPOINTS

       The named_t SELinux type can be entered via the named_checkconf_exec_t, named_exec_t file types.

       The default entrypoint paths for the named_t domain are the following:

       /usr/sbin/named-checkconf,   /usr/sbin/named,   /usr/sbin/lwresd,   /usr/sbin/unbound,	 /usr/sbin/named-sdb,	 /usr/sbin/unbound-anchor,
       /usr/sbin/unbound-checkconf

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 named policy is very flexible allowing users to setup their named pro-
       cesses in as secure a method as possible.

       The following process types are defined for named:

       named_t

       Note: semanage permissive -a named_t can be used to make the process type named_t permissive. SELinux does not deny  access  to	permissive
       process types, but the AVC (SELinux denials) messages are still generated.

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 determine whether Bind can bind tcp socket to http ports, you must turn on the named_tcp_bind_http_port boolean. Disabled by
       default.

       setsebool -P named_tcp_bind_http_port 1

       If  you	want  to determine whether Bind can write to master zone files. Generally this is used for dynamic DNS or zone transfers, you must
       turn on the named_write_master_zones boolean. Disabled by default.

       setsebool -P named_write_master_zones 1

       If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the  authlo-
       gin_nsswitch_use_ldap boolean. Disabled by default.

       setsebool -P authlogin_nsswitch_use_ldap 1

       If you want to allow all daemons to write corefiles to /, you must turn on the daemons_dump_core boolean. Disabled by default.

       setsebool -P daemons_dump_core 1

       If you want to enable cluster mode for daemons, you must turn on the daemons_enable_cluster_mode boolean. Enabled by default.

       setsebool -P daemons_enable_cluster_mode 1

       If you want to allow all daemons to use tcp wrappers, you must turn on the daemons_use_tcp_wrapper boolean. Disabled by default.

       setsebool -P daemons_use_tcp_wrapper 1

       If you want to allow all daemons the ability to read/write terminals, you must turn on the daemons_use_tty boolean. Disabled by default.

       setsebool -P daemons_use_tty 1

       If  you	want  to  deny	any  process  from ptracing or debugging any other processes, you must turn on the deny_ptrace boolean. Enabled by
       default.

       setsebool -P deny_ptrace 1

       If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled by default.

       setsebool -P domain_fd_use 1

       If you want to allow all domains to have the kernel load modules, you must turn on  the	domain_kernel_load_modules  boolean.  Disabled	by
       default.

       setsebool -P domain_kernel_load_modules 1

       If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.

       setsebool -P fips_mode 1

       If you want to enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.

       setsebool -P global_ssp 1

       If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.

       setsebool -P kerberos_enabled 1

       If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

       setsebool -P nis_enabled 1

       If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled by default.

       setsebool -P nscd_use_shm 1

NSSWITCH DOMAIN

       If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server for the named_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 named_t, you must turn on the kerberos_enabled boolean.

       setsebool -P kerberos_enabled 1

MANAGED FILES

       The SELinux process type named_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.

       cluster_conf_t

	    /etc/cluster(/.*)?

       cluster_var_lib_t

	    /var/lib/pcsd(/.*)?
	    /var/lib/cluster(/.*)?
	    /var/lib/openais(/.*)?
	    /var/lib/pengine(/.*)?
	    /var/lib/corosync(/.*)?
	    /usr/lib/heartbeat(/.*)?
	    /var/lib/heartbeat(/.*)?
	    /var/lib/pacemaker(/.*)?

       cluster_var_run_t

	    /var/run/crm(/.*)?
	    /var/run/cman_.*
	    /var/run/rsctmp(/.*)?
	    /var/run/aisexec.*
	    /var/run/heartbeat(/.*)?
	    /var/run/cpglockd.pid
	    /var/run/corosync.pid
	    /var/run/rgmanager.pid
	    /var/run/cluster/rgmanager.sk

       krb5_host_rcache_t

	    /var/cache/krb5rcache(/.*)?
	    /var/tmp/nfs_0
	    /var/tmp/DNS_25
	    /var/tmp/host_0
	    /var/tmp/imap_0
	    /var/tmp/HTTP_23
	    /var/tmp/HTTP_48
	    /var/tmp/ldap_55
	    /var/tmp/ldap_487
	    /var/tmp/ldapmap1_0

       named_cache_t

	    /var/named/data(/.*)?
	    /var/lib/unbound(/.*)?
	    /var/named/slaves(/.*)?
	    /var/named/dynamic(/.*)?
	    /var/named/chroot/var/tmp(/.*)?
	    /var/named/chroot/var/named/data(/.*)?
	    /var/named/chroot/var/named/slaves(/.*)?
	    /var/named/chroot/var/named/dynamic(/.*)?

       named_log_t

	    /var/log/named.*
	    /var/named/chroot/var/log/named.*

       named_tmp_t

       named_var_run_t

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

       named_zone_t

	    /var/named(/.*)?
	    /var/named/chroot/var/named(/.*)?

       root_t

	    /
	    /initrd

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

       EQUIVALENCE DIRECTORIES

       named policy stores data with multiple different file context types under the /var/named directory.  If you would like to store the data in
       a  different  directory you can use the semanage command to create an equivalence mapping.  If you wanted to store this data under the /srv
       dirctory you would execute the following command:

       semanage fcontext -a -e /var/named /srv/named
       restorecon -R -v /srv/named

       STANDARD FILE CONTEXT

       SELinux defines the file context types for the named, if you wanted to store files with these types in a diffent paths, you need to execute
       the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.

       semanage fcontext -a -t named_cache_t '/srv/named/content(/.*)?'
       restorecon -R -v /srv/mynamed_content

       Note: SELinux often uses regular expressions to specify labels that match multiple files.

       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/data(/.*)?,  /var/lib/unbound(/.*)?,  /var/named/slaves(/.*)?,  /var/named/dynamic(/.*)?,  /var/named/chroot/var/tmp(/.*)?,
	    /var/named/chroot/var/named/data(/.*)?, /var/named/chroot/var/named/slaves(/.*)?, /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  direc-
       tory.

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

       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/named, /usr/sbin/lwresd, /usr/sbin/unbound, /usr/sbin/named-sdb, /usr/sbin/unbound-anchor, /usr/sbin/unbound-checkconf

       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, /etc/rc.d/init.d/named-sdb

       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_unit_file_t

       - Set files with the named_unit_file_t type, if you want to treat the files as named unit content.

       Paths:
	    /usr/lib/systemd/system/named.*, /usr/lib/systemd/system/unbound.*, /usr/lib/systemd/system/named-sdb.*

       named_var_run_t

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

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

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

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 .

SEE ALSO

       selinux(8), named(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8)

named								     14-06-10							  named_selinux(8)