1inetd_selinux(8) SELinux Policy inetd inetd_selinux(8)
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6 inetd_selinux - Security Enhanced Linux Policy for the inetd processes
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9 Security-Enhanced Linux secures the inetd processes via flexible manda‐
10 tory access control.
11 The inetd processes execute with the inetd_t SELinux type. You can
13 check if you have these processes running by executing the ps command
14 with the -Z qualifier.
15 For example:
17 ps -eZ | grep inetd_t
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23 The inetd_t SELinux type can be entered via the inetd_exec_t file type.
24 The default entrypoint paths for the inetd_t domain are the following:
26 /usr/sbin/(x)?inetd, /usr/sbin/rlinetd
28
30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 inetd policy is very flexible allowing users to setup their inetd pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for inetd:
40 inetd_t, inetd_child_t
42 Note: semanage permissive -a inetd_t can be used to make the process
44 type inetd_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
47
50 SELinux policy is customizable based on least access required. inetd
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run inetd with the tightest access possible.
53 If you want to allow users to resolve user passwd entries directly from
57 ldap rather then using a sssd server, you must turn on the authlo‐
58 gin_nsswitch_use_ldap boolean. Disabled by default.
59 setsebool -P authlogin_nsswitch_use_ldap 1
61 If you want to allow all daemons to write corefiles to /, you must turn
65 on the daemons_dump_core boolean. Disabled by default.
66 setsebool -P daemons_dump_core 1
68 If you want to enable cluster mode for daemons, you must turn on the
72 daemons_enable_cluster_mode boolean. Enabled by default.
73 setsebool -P daemons_enable_cluster_mode 1
75 If you want to allow all daemons to use tcp wrappers, you must turn on
79 the daemons_use_tcp_wrapper boolean. Disabled by default.
80 setsebool -P daemons_use_tcp_wrapper 1
82 If you want to allow all daemons the ability to read/write terminals,
86 you must turn on the daemons_use_tty boolean. Disabled by default.
87 setsebool -P daemons_use_tty 1
89 If you want to deny user domains applications to map a memory region as
93 both executable and writable, this is dangerous and the executable
94 should be reported in bugzilla, you must turn on the deny_execmem bool‐
95 ean. Enabled by default.
96 setsebool -P deny_execmem 1
98 If you want to deny any process from ptracing or debugging any other
102 processes, you must turn on the deny_ptrace boolean. Enabled by
103 default.
104 setsebool -P deny_ptrace 1
106 If you want to allow any process to mmap any file on system with
110 attribute file_type, you must turn on the domain_can_mmap_files bool‐
111 ean. Enabled by default.
112 setsebool -P domain_can_mmap_files 1
114 If you want to allow all domains write to kmsg_device, while kernel is
118 executed with systemd.log_target=kmsg parameter, you must turn on the
119 domain_can_write_kmsg boolean. Disabled by default.
120 setsebool -P domain_can_write_kmsg 1
122 If you want to allow all domains to use other domains file descriptors,
126 you must turn on the domain_fd_use boolean. Enabled by default.
127 setsebool -P domain_fd_use 1
129 If you want to allow all domains to have the kernel load modules, you
133 must turn on the domain_kernel_load_modules boolean. Disabled by
134 default.
135 setsebool -P domain_kernel_load_modules 1
137 If you want to allow all domains to execute in fips_mode, you must turn
141 on the fips_mode boolean. Enabled by default.
142 setsebool -P fips_mode 1
144 If you want to enable reading of urandom for all domains, you must turn
148 on the global_ssp boolean. Disabled by default.
149 setsebool -P global_ssp 1
151 If you want to allow confined applications to run with kerberos, you
155 must turn on the kerberos_enabled boolean. Enabled by default.
156 setsebool -P kerberos_enabled 1
158 If you want to control the ability to mmap a low area of the address
162 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
163 the mmap_low_allowed boolean. Disabled by default.
164 setsebool -P mmap_low_allowed 1
166 If you want to allow system to run with NIS, you must turn on the
170 nis_enabled boolean. Disabled by default.
171 setsebool -P nis_enabled 1
173 If you want to allow confined applications to use nscd shared memory,
177 you must turn on the nscd_use_shm boolean. Disabled by default.
178 setsebool -P nscd_use_shm 1
180 If you want to disable kernel module loading, you must turn on the
184 secure_mode_insmod boolean. Enabled by default.
185 setsebool -P secure_mode_insmod 1
187 If you want to boolean to determine whether the system permits loading
191 policy, setting enforcing mode, and changing boolean values. Set this
192 to true and you have to reboot to set it back, you must turn on the
193 secure_mode_policyload boolean. Enabled by default.
194 setsebool -P secure_mode_policyload 1
196 If you want to allow unconfined executables to make their heap memory
200 executable. Doing this is a really bad idea. Probably indicates a
201 badly coded executable, but could indicate an attack. This executable
202 should be reported in bugzilla, you must turn on the selin‐
203 uxuser_execheap boolean. Disabled by default.
204 setsebool -P selinuxuser_execheap 1
206 If you want to allow all unconfined executables to use libraries
210 requiring text relocation that are not labeled textrel_shlib_t, you
211 must turn on the selinuxuser_execmod boolean. Enabled by default.
212 setsebool -P selinuxuser_execmod 1
214 If you want to allow unconfined executables to make their stack exe‐
218 cutable. This should never, ever be necessary. Probably indicates a
219 badly coded executable, but could indicate an attack. This executable
220 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
221 stack boolean. Enabled by default.
222 setsebool -P selinuxuser_execstack 1
224 If you want to support X userspace object manager, you must turn on the
228 xserver_object_manager boolean. Enabled by default.
229 setsebool -P xserver_object_manager 1
231
235 SELinux defines port types to represent TCP and UDP ports.
236 You can see the types associated with a port by using the following
238 command:
239 semanage port -l
241 Policy governs the access confined processes have to these ports.
244 SELinux inetd policy is very flexible allowing users to setup their
245 inetd processes in as secure a method as possible.
246 The following port types are defined for inetd:
248 inetd_child_port_t
251 Default Defined Ports:
255 tcp 1,9,13,19,512,544,891,892,5666
256 udp 1,9,13,19,891,892
257
259 The SELinux process type inetd_t can manage files labeled with the fol‐
260 lowing file types. The paths listed are the default paths for these
261 file types. Note the processes UID still need to have DAC permissions.
262 file_type
264 all files on the system
266
269 SELinux requires files to have an extended attribute to define the file
270 type.
271 You can see the context of a file using the -Z option to ls
273 Policy governs the access confined processes have to these files.
275 SELinux inetd policy is very flexible allowing users to setup their
276 inetd processes in as secure a method as possible.
277 STANDARD FILE CONTEXT
279 SELinux defines the file context types for the inetd, if you wanted to
281 store files with these types in a diffent paths, you need to execute
282 the semanage command to sepecify alternate labeling and then use
283 restorecon to put the labels on disk.
284 semanage fcontext -a -t inetd_var_run_t '/srv/myinetd_content(/.*)?'
286 restorecon -R -v /srv/myinetd_content
287 Note: SELinux often uses regular expressions to specify labels that
289 match multiple files.
290 The following file types are defined for inetd:
292 inetd_child_exec_t
296 - Set files with the inetd_child_exec_t type, if you want to transition
298 an executable to the inetd_child_t domain.
299 Paths:
302 /usr/sbin/in..*d, /usr/lib/pysieved/pysieved.*.py,
303 /usr/local/lib/pysieved/pysieved.*.py, /usr/sbin/identd
304 inetd_child_tmp_t
307 - Set files with the inetd_child_tmp_t type, if you want to store inetd
309 child temporary files in the /tmp directories.
310 inetd_child_var_run_t
314 - Set files with the inetd_child_var_run_t type, if you want to store
316 the inetd child files under the /run or /var/run directory.
317 inetd_exec_t
321 - Set files with the inetd_exec_t type, if you want to transition an
323 executable to the inetd_t domain.
324 Paths:
327 /usr/sbin/(x)?inetd, /usr/sbin/rlinetd
328 inetd_log_t
331 - Set files with the inetd_log_t type, if you want to treat the data as
333 inetd log data, usually stored under the /var/log directory.
334 inetd_tmp_t
338 - Set files with the inetd_tmp_t type, if you want to store inetd tem‐
340 porary files in the /tmp directories.
341 inetd_var_run_t
345 - Set files with the inetd_var_run_t type, if you want to store the
347 inetd files under the /run or /var/run directory.
348 Note: File context can be temporarily modified with the chcon command.
352 If you want to permanently change the file context you need to use the
353 semanage fcontext command. This will modify the SELinux labeling data‐
354 base. You will need to use restorecon to apply the labels.
355
358 semanage fcontext can also be used to manipulate default file context
359 mappings.
360 semanage permissive can also be used to manipulate whether or not a
362 process type is permissive.
363 semanage module can also be used to enable/disable/install/remove pol‐
365 icy modules.
366 semanage port can also be used to manipulate the port definitions
368 semanage boolean can also be used to manipulate the booleans
370 system-config-selinux is a GUI tool available to customize SELinux pol‐
373 icy settings.
374
377 This manual page was auto-generated using sepolicy manpage .
378
381 selinux(8), inetd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8)
382 , setsebool(8), inetd_child_selinux(8)
383inetd 19-04-25 inetd_selinux(8)