named_selinux man page on Oracle

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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 manda‐
       tory 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	gener‐
       ated.

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 fol‐
       lowing  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 tran‐
       sition 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:
	    /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-name‐
	    server.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 transi‐
       tion 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 tem‐
       porary 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/sys‐
	    tem/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 data‐
       base.  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 pol‐
       icy modules.

       semanage boolean can also be used to manipulate the booleans

       system-config-selinux is a GUI tool available to customize SELinux pol‐
       icy 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				   14-05-08		      named_selinux(8)
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