nscd_selinux(8)

1nscd_selinux(8)               SELinux Policy nscd              nscd_selinux(8)
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NAME

6       nscd_selinux - Security Enhanced Linux Policy for the nscd processes
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DESCRIPTION

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

ENTRYPOINTS

23       The nscd_t SELinux type can be entered via the nscd_exec_t file type.
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25       The default entrypoint paths for the nscd_t domain are the following:
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27       /usr/sbin/nscd
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PROCESS TYPES

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

BOOLEANS

50       SELinux policy is customizable based on least  access  required.   nscd
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run nscd with the tightest access possible.
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55
56       If you want to allow confined applications to use nscd  shared  memory,
57       you must turn on the nscd_use_shm boolean. Enabled by default.
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59       setsebool -P nscd_use_shm 1
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63       If you want to allow all daemons to write corefiles to /, you must turn
64       on the allow_daemons_dump_core boolean. Disabled by default.
65
66       setsebool -P allow_daemons_dump_core 1
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70       If you want to allow all daemons to use tcp wrappers, you must turn  on
71       the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
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73       setsebool -P allow_daemons_use_tcp_wrapper 1
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77       If  you  want to allow all daemons the ability to read/write terminals,
78       you  must  turn  on  the  allow_daemons_use_tty  boolean.  Disabled  by
79       default.
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81       setsebool -P allow_daemons_use_tty 1
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85       If you want to allow all domains to use other domains file descriptors,
86       you must turn on the allow_domain_fd_use boolean. Enabled by default.
87
88       setsebool -P allow_domain_fd_use 1
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91
92       If you want to allow confined applications to run  with  kerberos,  you
93       must turn on the allow_kerberos boolean. Enabled by default.
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95       setsebool -P allow_kerberos 1
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99       If  you want to allow sysadm to debug or ptrace all processes, you must
100       turn on the allow_ptrace boolean. Disabled by default.
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102       setsebool -P allow_ptrace 1
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105
106       If you want to allow host key based authentication, you  must  turn  on
107       the allow_ssh_keysign boolean. Disabled by default.
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109       setsebool -P allow_ssh_keysign 1
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112
113       If  you  want  to  allow  system  to run with NIS, you must turn on the
114       allow_ypbind boolean. Disabled by default.
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116       setsebool -P allow_ypbind 1
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119
120       If you want to enable cluster mode for daemons, you must  turn  on  the
121       daemons_enable_cluster_mode boolean. Disabled by default.
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123       setsebool -P daemons_enable_cluster_mode 1
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126
127       If  you  want to allow all domains to have the kernel load modules, you
128       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
129       default.
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131       setsebool -P domain_kernel_load_modules 1
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135       If you want to allow all domains to execute in fips_mode, you must turn
136       on the fips_mode boolean. Enabled by default.
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138       setsebool -P fips_mode 1
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142       If you want to enable reading of urandom for all domains, you must turn
143       on the global_ssp boolean. Disabled by default.
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145       setsebool -P global_ssp 1
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149       If you want to enable support for upstart as the init program, you must
150       turn on the init_upstart boolean. Enabled by default.
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152       setsebool -P init_upstart 1
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156       If you want to allow samba to act as the domain controller, add  users,
157       groups  and  change  passwords,  you must turn on the samba_domain_con‐
158       troller boolean. Disabled by default.
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160       setsebool -P samba_domain_controller 1
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MANAGED FILES

165       The SELinux process type nscd_t can manage files labeled with the  fol‐
166       lowing  file  types.   The paths listed are the default paths for these
167       file types.  Note the processes UID still need to have DAC permissions.
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169       cluster_conf_t
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171            /etc/cluster(/.*)?
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173       cluster_var_lib_t
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175            /var/lib(64)?/openais(/.*)?
176            /var/lib(64)?/pengine(/.*)?
177            /var/lib(64)?/corosync(/.*)?
178            /usr/lib(64)?/heartbeat(/.*)?
179            /var/lib(64)?/heartbeat(/.*)?
180            /var/lib(64)?/pacemaker(/.*)?
181            /var/lib/cluster(/.*)?
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183       cluster_var_run_t
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185            /var/run/crm(/.*)?
186            /var/run/cman_.*
187            /var/run/rsctmp(/.*)?
188            /var/run/aisexec.*
189            /var/run/heartbeat(/.*)?
190            /var/run/cpglockd.pid
191            /var/run/corosync.pid
192            /var/run/rgmanager.pid
193            /var/run/cluster/rgmanager.sk
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195       initrc_tmp_t
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197
198       mnt_t
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200            /mnt(/[^/]*)
201            /mnt(/[^/]*)?
202            /rhev(/[^/]*)?
203            /media(/[^/]*)
204            /media(/[^/]*)?
205            /etc/rhgb(/.*)?
206            /media/.hal-.*
207            /net
208            /afs
209            /rhev
210            /misc
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212       nscd_log_t
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214            /var/log/nscd.log.*
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216       nscd_var_run_t
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218            /var/db/nscd(/.*)?
219            /var/run/nscd(/.*)?
220            /var/cache/nscd(/.*)?
221            /var/run/nscd.pid
222            /var/run/.nscd_socket
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224       root_t
225
226            /
227            /initrd
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229       security_t
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232       tmp_t
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234            /tmp
235            /usr/tmp
236            /var/tmp
237            /tmp-inst
238            /var/tmp-inst
239            /var/tmp/vi.recover
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241

FILE CONTEXTS

243       SELinux requires files to have an extended attribute to define the file
244       type.
245
246       You can see the context of a file using the -Z option to ls
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248       Policy  governs  the  access  confined  processes  have to these files.
249       SELinux nscd policy is very flexible allowing users to setup their nscd
250       processes in as secure a method as possible.
251
252       EQUIVALENCE DIRECTORIES
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254
255       nscd  policy  stores  data  with  multiple different file context types
256       under the /var/run/nscd directory.  If you would like to store the data
257       in  a different directory you can use the semanage command to create an
258       equivalence mapping.  If you wanted to store this data under  the  /srv
259       dirctory you would execute the following command:
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261       semanage fcontext -a -e /var/run/nscd /srv/nscd
262       restorecon -R -v /srv/nscd
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264       STANDARD FILE CONTEXT
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266       SELinux  defines  the file context types for the nscd, if you wanted to
267       store files with these types in a diffent paths, you  need  to  execute
268       the  semanage  command  to  sepecify  alternate  labeling  and then use
269       restorecon to put the labels on disk.
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271       semanage fcontext -a -t nscd_var_run_t '/srv/mynscd_content(/.*)?'
272       restorecon -R -v /srv/mynscd_content
273
274       Note: SELinux often uses regular expressions  to  specify  labels  that
275       match multiple files.
276
277       The following file types are defined for nscd:
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280
281       nscd_exec_t
282
283       -  Set  files  with  the nscd_exec_t type, if you want to transition an
284       executable to the nscd_t domain.
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288       nscd_initrc_exec_t
289
290       - Set files with the nscd_initrc_exec_t type, if you want to transition
291       an executable to the nscd_initrc_t domain.
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295       nscd_log_t
296
297       -  Set files with the nscd_log_t type, if you want to treat the data as
298       nscd log data, usually stored under the /var/log directory.
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302       nscd_var_run_t
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304       - Set files with the nscd_var_run_t type, if you want to store the nscd
305       files under the /run or /var/run directory.
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307
308       Paths:
309            /var/db/nscd(/.*)?,   /var/run/nscd(/.*)?,  /var/cache/nscd(/.*)?,
310            /var/run/nscd.pid, /var/run/.nscd_socket
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312
313       Note: File context can be temporarily modified with the chcon  command.
314       If  you want to permanently change the file context you need to use the
315       semanage fcontext command.  This will modify the SELinux labeling data‐
316       base.  You will need to use restorecon to apply the labels.
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COMMANDS

320       semanage  fcontext  can also be used to manipulate default file context
321       mappings.
322
323       semanage permissive can also be used to manipulate  whether  or  not  a
324       process type is permissive.
325
326       semanage  module can also be used to enable/disable/install/remove pol‐
327       icy modules.
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329       semanage boolean can also be used to manipulate the booleans
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331
332       system-config-selinux is a GUI tool available to customize SELinux pol‐
333       icy settings.
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335

AUTHOR

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