inetd_child_selinux(8)

1inetd_child_selinux(8)    SELinux Policy inetd_child    inetd_child_selinux(8)
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NAME

6       inetd_child_selinux   -   Security   Enhanced   Linux  Policy  for  the
7       inetd_child processes
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DESCRIPTION

10       Security-Enhanced Linux secures the inetd_child processes via  flexible
11       mandatory access control.
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13       The  inetd_child processes execute with the inetd_child_t SELinux type.
14       You can check if you have these processes running by executing  the  ps
15       command with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep inetd_child_t
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ENTRYPOINTS

24       The  inetd_child_t  SELinux  type  can  be  entered  via the file_type,
25       inetd_child_exec_t,    unlabeled_t,     proc_type,     filesystem_type,
26       mtrr_device_t, sysctl_type file types.
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28       The  default entrypoint paths for the inetd_child_t domain are the fol‐
29       lowing:
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31       all      files       on       the       system,       /usr/sbin/in..*d,
32       /usr/local/lib/pysieved/pysieved.*.py, /usr/sbin/identd, /dev/cpu/mtrr
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PROCESS TYPES

35       SELinux defines process types (domains) for each process running on the
36       system
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38       You can see the context of a process using the -Z option to ps
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40       Policy governs the access confined processes have  to  files.   SELinux
41       inetd_child  policy  is  very  flexible  allowing  users to setup their
42       inetd_child processes in as secure a method as possible.
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44       The following process types are defined for inetd_child:
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46       inetd_child_t
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48       Note: semanage permissive -a inetd_child_t can  be  used  to  make  the
49       process  type inetd_child_t permissive. SELinux does not deny access to
50       permissive process types, but the AVC (SELinux  denials)  messages  are
51       still generated.
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BOOLEANS

55       SELinux   policy  is  customizable  based  on  least  access  required.
56       inetd_child policy is extremely flexible and has several booleans  that
57       allow  you to manipulate the policy and run inetd_child with the tight‐
58       est access possible.
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62       If you want to allow all domains to use other domains file descriptors,
63       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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65       setsebool -P allow_domain_fd_use 1
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69       If  you  want to allow unconfined executables to make their heap memory
70       executable.  Doing this is a really  bad  idea.  Probably  indicates  a
71       badly  coded  executable, but could indicate an attack. This executable
72       should be reported in bugzilla, you must  turn  on  the  allow_execheap
73       boolean. Disabled by default.
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75       setsebool -P allow_execheap 1
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79       If  you  want to allow unconfined executables to map a memory region as
80       both executable and writable, this  is  dangerous  and  the  executable
81       should  be  reported  in  bugzilla), you must turn on the allow_execmem
82       boolean. Enabled by default.
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84       setsebool -P allow_execmem 1
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88       If you want to  allow  all  unconfined  executables  to  use  libraries
89       requiring  text  relocation  that are not labeled textrel_shlib_t), you
90       must turn on the allow_execmod boolean. Enabled by default.
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92       setsebool -P allow_execmod 1
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96       If you want to allow unconfined executables to make  their  stack  exe‐
97       cutable.   This  should  never, ever be necessary. Probably indicates a
98       badly coded executable, but could indicate an attack.  This  executable
99       should  be  reported in bugzilla), you must turn on the allow_execstack
100       boolean. Enabled by default.
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102       setsebool -P allow_execstack 1
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106       If you want to allow confined applications to run  with  kerberos,  you
107       must turn on the allow_kerberos boolean. Enabled by default.
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109       setsebool -P allow_kerberos 1
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113       If  you want to allow sysadm to debug or ptrace all processes, you must
114       turn on the allow_ptrace boolean. Disabled by default.
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116       setsebool -P allow_ptrace 1
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120       If you want to allow system to run with  NIS,  you  must  turn  on  the
121       allow_ypbind boolean. Disabled by default.
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123       setsebool -P allow_ypbind 1
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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 allow certain domains to map low memory in the kernel,
150       you must turn on the mmap_low_allowed boolean. Disabled by default.
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152       setsebool -P mmap_low_allowed 1
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156       If you want to allow confined applications to use nscd  shared  memory,
157       you must turn on the nscd_use_shm boolean. Enabled by default.
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159       setsebool -P nscd_use_shm 1
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163       If  you want to boolean to determine whether the system permits loading
164       policy, setting enforcing mode, and changing boolean values.  Set  this
165       to  true  and  you  have to reboot to set it back, you must turn on the
166       secure_mode_policyload boolean. Disabled by default.
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168       setsebool -P secure_mode_policyload 1
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172       If you want to support X userspace object manager, you must turn on the
173       xserver_object_manager boolean. Disabled by default.
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175       setsebool -P xserver_object_manager 1
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PORT TYPES

180       SELinux defines port types to represent TCP and UDP ports.
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182       You  can  see  the  types associated with a port by using the following
183       command:
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185       semanage port -l
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188       Policy governs the access  confined  processes  have  to  these  ports.
189       SELinux  inetd_child  policy  is  very flexible allowing users to setup
190       their inetd_child processes in as secure a method as possible.
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192       The following port types are defined for inetd_child:
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195       inetd_child_port_t
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199       Default Defined Ports:
200                 tcp 1,7,9,13,19,37,512,543,544,891,892,2105,5666
201                 udp 1,7,9,13,19,37,891,892
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MANAGED FILES

204       The SELinux process type inetd_child_t can manage  files  labeled  with
205       the  following  file types.  The paths listed are the default paths for
206       these file types.  Note the processes UID still need to have  DAC  per‐
207       missions.
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209       file_type
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211            all files on the system
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FILE CONTEXTS

215       SELinux requires files to have an extended attribute to define the file
216       type.
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218       You can see the context of a file using the -Z option to ls
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220       Policy governs the access  confined  processes  have  to  these  files.
221       SELinux  inetd_child  policy  is  very flexible allowing users to setup
222       their inetd_child processes in as secure a method as possible.
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224       STANDARD FILE CONTEXT
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226       SELinux defines the file context types  for  the  inetd_child,  if  you
227       wanted  to store files with these types in a diffent paths, you need to
228       execute the semanage command to sepecify alternate  labeling  and  then
229       use restorecon to put the labels on disk.
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231       semanage  fcontext -a -t inetd_child_var_run_t '/srv/myinetd_child_con‐
232       tent(/.*)?'
233       restorecon -R -v /srv/myinetd_child_content
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235       Note: SELinux often uses regular expressions  to  specify  labels  that
236       match multiple files.
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238       The following file types are defined for inetd_child:
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242       inetd_child_exec_t
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244       - Set files with the inetd_child_exec_t type, if you want to transition
245       an executable to the inetd_child_t domain.
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247
248       Paths:
249            /usr/sbin/in..*d,           /usr/local/lib/pysieved/pysieved.*.py,
250            /usr/sbin/identd
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253       inetd_child_tmp_t
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255       - Set files with the inetd_child_tmp_t type, if you want to store inetd
256       child temporary files in the /tmp directories.
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260       inetd_child_var_run_t
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262       - Set files with the inetd_child_var_run_t type, if you want  to  store
263       the inetd child files under the /run or /var/run directory.
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267       Note:  File context can be temporarily modified with the chcon command.
268       If you want to permanently change the file context you need to use  the
269       semanage fcontext command.  This will modify the SELinux labeling data‐
270       base.  You will need to use restorecon to apply the labels.
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COMMANDS

274       semanage fcontext can also be used to manipulate default  file  context
275       mappings.
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277       semanage  permissive  can  also  be used to manipulate whether or not a
278       process type is permissive.
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280       semanage module can also be used to enable/disable/install/remove  pol‐
281       icy modules.
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283       semanage port can also be used to manipulate the port definitions
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285       semanage boolean can also be used to manipulate the booleans
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288       system-config-selinux is a GUI tool available to customize SELinux pol‐
289       icy settings.
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AUTHOR

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