named_selinux(8)

1named_selinux(8)             SELinux Policy named             named_selinux(8)
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NAME

6       named_selinux - Security Enhanced Linux Policy for the named processes
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DESCRIPTION

9       Security-Enhanced Linux secures the named processes via flexible manda‐
10       tory access control.
11
12       The named processes execute with the  named_t  SELinux  type.  You  can
13       check  if  you have these processes running by executing the ps command
14       with the -Z qualifier.
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16       For example:
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18       ps -eZ | grep named_t
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20
21

ENTRYPOINTS

23       The  named_t  SELinux  type  can  be  entered  via  the   named_exec_t,
24       named_checkconf_exec_t file types.
25
26       The default entrypoint paths for the named_t domain are the following:
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28       /usr/sbin/named,  /usr/sbin/lwresd, /usr/sbin/unbound, /usr/sbin/named-
29       sdb, /usr/sbin/named-checkconf
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PROCESS TYPES

32       SELinux defines process types (domains) for each process running on the
33       system
34
35       You can see the context of a process using the -Z option to ps
36
37       Policy  governs  the  access confined processes have to files.  SELinux
38       named policy is very flexible allowing users to setup their named  pro‐
39       cesses in as secure a method as possible.
40
41       The following process types are defined for named:
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43       named_t
44
45       Note:  semanage  permissive  -a named_t can be used to make the process
46       type named_t permissive. SELinux does not  deny  access  to  permissive
47       process  types, but the AVC (SELinux denials) messages are still gener‐
48       ated.
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50

BOOLEANS

52       SELinux policy is customizable based on least access  required.   named
53       policy is extremely flexible and has several booleans that allow you to
54       manipulate the policy and run named with the tightest access possible.
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56
57
58       If you want to allow BIND to bind apache port, you  must  turn  on  the
59       named_bind_http_port boolean. Disabled by default.
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61       setsebool -P named_bind_http_port 1
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63
64
65       If  you  want  to  allow BIND to write the master zone files. Generally
66       this is used for dynamic DNS or zone transfers, you must  turn  on  the
67       named_write_master_zones boolean. Disabled by default.
68
69       setsebool -P named_write_master_zones 1
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71
72
73       If you want to allow all daemons to write corefiles to /, you must turn
74       on the allow_daemons_dump_core boolean. Disabled by default.
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76       setsebool -P allow_daemons_dump_core 1
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78
79
80       If you want to allow all daemons to use tcp wrappers, you must turn  on
81       the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
82
83       setsebool -P allow_daemons_use_tcp_wrapper 1
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85
86
87       If  you  want to allow all daemons the ability to read/write terminals,
88       you  must  turn  on  the  allow_daemons_use_tty  boolean.  Disabled  by
89       default.
90
91       setsebool -P allow_daemons_use_tty 1
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94
95       If you want to allow all domains to use other domains file descriptors,
96       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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98       setsebool -P allow_domain_fd_use 1
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100
101
102       If you want to allow confined applications to run  with  kerberos,  you
103       must turn on the allow_kerberos boolean. Enabled by default.
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105       setsebool -P allow_kerberos 1
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107
108
109       If  you want to allow sysadm to debug or ptrace all processes, you must
110       turn on the allow_ptrace boolean. Disabled by default.
111
112       setsebool -P allow_ptrace 1
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114
115
116       If you want to allow system to run with  NIS,  you  must  turn  on  the
117       allow_ypbind boolean. Disabled by default.
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119       setsebool -P allow_ypbind 1
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121
122
123       If  you  want  to enable cluster mode for daemons, you must turn on the
124       daemons_enable_cluster_mode boolean. Disabled by default.
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126       setsebool -P daemons_enable_cluster_mode 1
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128
129
130       If you want to allow all domains to have the kernel load  modules,  you
131       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
132       default.
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134       setsebool -P domain_kernel_load_modules 1
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136
137
138       If you want to allow all domains to execute in fips_mode, you must turn
139       on the fips_mode boolean. Enabled by default.
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141       setsebool -P fips_mode 1
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143
144
145       If you want to enable reading of urandom for all domains, you must turn
146       on the global_ssp boolean. Disabled by default.
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148       setsebool -P global_ssp 1
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150
151
152       If you want to enable support for upstart as the init program, you must
153       turn on the init_upstart boolean. Enabled by default.
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155       setsebool -P init_upstart 1
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157
158
159       If  you  want to allow confined applications to use nscd shared memory,
160       you must turn on the nscd_use_shm boolean. Enabled by default.
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162       setsebool -P nscd_use_shm 1
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165

MANAGED FILES

167       The SELinux process type named_t can manage files labeled with the fol‐
168       lowing  file  types.   The paths listed are the default paths for these
169       file types.  Note the processes UID still need to have DAC permissions.
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171       cluster_conf_t
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173            /etc/cluster(/.*)?
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175       cluster_var_lib_t
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177            /var/lib(64)?/openais(/.*)?
178            /var/lib(64)?/pengine(/.*)?
179            /var/lib(64)?/corosync(/.*)?
180            /usr/lib(64)?/heartbeat(/.*)?
181            /var/lib(64)?/heartbeat(/.*)?
182            /var/lib(64)?/pacemaker(/.*)?
183            /var/lib/cluster(/.*)?
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185       cluster_var_run_t
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187            /var/run/crm(/.*)?
188            /var/run/cman_.*
189            /var/run/rsctmp(/.*)?
190            /var/run/aisexec.*
191            /var/run/heartbeat(/.*)?
192            /var/run/cpglockd.pid
193            /var/run/corosync.pid
194            /var/run/rgmanager.pid
195            /var/run/cluster/rgmanager.sk
196
197       initrc_tmp_t
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199
200       mnt_t
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202            /mnt(/[^/]*)
203            /mnt(/[^/]*)?
204            /rhev(/[^/]*)?
205            /media(/[^/]*)
206            /media(/[^/]*)?
207            /etc/rhgb(/.*)?
208            /media/.hal-.*
209            /net
210            /afs
211            /rhev
212            /misc
213
214       named_cache_t
215
216            /var/named/data(/.*)?
217            /var/lib/unbound(/.*)?
218            /var/named/slaves(/.*)?
219            /var/named/dynamic(/.*)?
220            /var/named/chroot/var/tmp(/.*)?
221            /var/named/chroot/var/named/data(/.*)?
222            /var/named/chroot/var/named/slaves(/.*)?
223            /var/named/chroot/var/named/dynamic(/.*)?
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225       named_log_t
226
227            /var/log/named.*
228            /var/named/chroot/var/log/named.*
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230       named_tmp_t
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232            /var/tmp/DNS_25
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234       named_var_run_t
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236            /var/run/bind(/.*)?
237            /var/run/named(/.*)?
238            /var/run/unbound(/.*)?
239            /var/named/chroot/var/run/named.*
240            /var/run/ndc
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242       named_zone_t
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244            /var/named(/.*)?
245            /var/named/chroot/var/named(/.*)?
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247       root_t
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249            /
250            /initrd
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252       tmp_t
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254            /tmp
255            /usr/tmp
256            /var/tmp
257            /tmp-inst
258            /var/tmp-inst
259            /var/tmp/vi.recover
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261

FILE CONTEXTS

263       SELinux requires files to have an extended attribute to define the file
264       type.
265
266       You can see the context of a file using the -Z option to ls
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268       Policy  governs  the  access  confined  processes  have to these files.
269       SELinux named policy is very flexible allowing  users  to  setup  their
270       named processes in as secure a method as possible.
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272       EQUIVALENCE DIRECTORIES
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274
275       named  policy  stores  data  with multiple different file context types
276       under the /var/named directory.  If you would like to store the data in
277       a  different  directory  you  can use the semanage command to create an
278       equivalence mapping.  If you wanted to store this data under  the  /srv
279       dirctory you would execute the following command:
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281       semanage fcontext -a -e /var/named /srv/named
282       restorecon -R -v /srv/named
283
284       STANDARD FILE CONTEXT
285
286       SELinux  defines the file context types for the named, if you wanted to
287       store files with these types in a diffent paths, you  need  to  execute
288       the  semanage  command  to  sepecify  alternate  labeling  and then use
289       restorecon to put the labels on disk.
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291       semanage fcontext -a -t named_zone_t '/srv/mynamed_content(/.*)?'
292       restorecon -R -v /srv/mynamed_content
293
294       Note: SELinux often uses regular expressions  to  specify  labels  that
295       match multiple files.
296
297       The following file types are defined for named:
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299
300
301       named_cache_t
302
303       - Set files with the named_cache_t type, if you want to store the files
304       under the /var/cache directory.
305
306
307       Paths:
308            /var/named/data(/.*)?,                     /var/lib/unbound(/.*)?,
309            /var/named/slaves(/.*)?,                 /var/named/dynamic(/.*)?,
310            /var/named/chroot/var/tmp(/.*)?,
311            /var/named/chroot/var/named/data(/.*)?,
312            /var/named/chroot/var/named/slaves(/.*)?,
313            /var/named/chroot/var/named/dynamic(/.*)?
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315
316       named_checkconf_exec_t
317
318       -  Set files with the named_checkconf_exec_t type, if you want to tran‐
319       sition an executable to the named_checkconf_t domain.
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321
322
323       named_conf_t
324
325       - Set files with the named_conf_t type, if you want to treat the  files
326       as named configuration data, usually stored under the /etc directory.
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328
329       Paths:
330            /etc/rndc.*,      /etc/unbound(/.*)?,     /var/named/chroot(/.*)?,
331            /etc/named.rfc1912.zones,
332            /var/named/chroot/etc/named.rfc1912.zones,        /etc/named.conf,
333            /var/named/named.ca,                        /etc/named.root.hints,
334            /var/named/chroot/etc/named.conf,         /etc/named.caching-name‐
335            server.conf,                 /var/named/chroot/var/named/named.ca,
336            /var/named/chroot/etc/named.root.hints,
337            /var/named/chroot/etc/named.caching-nameserver.conf
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339
340       named_exec_t
341
342       - Set files with the named_exec_t type, if you want  to  transition  an
343       executable to the named_t domain.
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345
346       Paths:
347            /usr/sbin/named,        /usr/sbin/lwresd,       /usr/sbin/unbound,
348            /usr/sbin/named-sdb
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350
351       named_initrc_exec_t
352
353       - Set files with the named_initrc_exec_t type, if you want  to  transi‐
354       tion an executable to the named_initrc_t domain.
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356
357       Paths:
358            /etc/rc.d/init.d/named,                  /etc/rc.d/init.d/unbound,
359            /etc/rc.d/init.d/named-sdb
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361
362       named_keytab_t
363
364       - Set files with the named_keytab_t type, if  you  want  to  treat  the
365       files as kerberos keytab files.
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367
368
369       named_log_t
370
371       - Set files with the named_log_t type, if you want to treat the data as
372       named log data, usually stored under the /var/log directory.
373
374
375       Paths:
376            /var/log/named.*, /var/named/chroot/var/log/named.*
377
378
379       named_tmp_t
380
381       - Set files with the named_tmp_t type, if you want to store named  tem‐
382       porary files in the /tmp directories.
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384
385
386       named_var_run_t
387
388       -  Set  files  with  the named_var_run_t type, if you want to store the
389       named files under the /run or /var/run directory.
390
391
392       Paths:
393            /var/run/bind(/.*)?, /var/run/named(/.*)?, /var/run/unbound(/.*)?,
394            /var/named/chroot/var/run/named.*, /var/run/ndc
395
396
397       named_zone_t
398
399       -  Set files with the named_zone_t type, if you want to treat the files
400       as named zone data.
401
402
403       Paths:
404            /var/named(/.*)?, /var/named/chroot/var/named(/.*)?
405
406
407       Note: File context can be temporarily modified with the chcon  command.
408       If  you want to permanently change the file context you need to use the
409       semanage fcontext command.  This will modify the SELinux labeling data‐
410       base.  You will need to use restorecon to apply the labels.
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412

COMMANDS

414       semanage  fcontext  can also be used to manipulate default file context
415       mappings.
416
417       semanage permissive can also be used to manipulate  whether  or  not  a
418       process type is permissive.
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420       semanage  module can also be used to enable/disable/install/remove pol‐
421       icy modules.
422
423       semanage boolean can also be used to manipulate the booleans
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425
426       system-config-selinux is a GUI tool available to customize SELinux pol‐
427       icy settings.
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429

AUTHOR

431       This manual page was auto-generated using sepolicy manpage .
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