1inetd_selinux(8) SELinux Policy inetd inetd_selinux(8)
2
6 inetd_selinux - Security Enhanced Linux Policy for the inetd processes
7
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
19
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 deny user domains applications to map a memory region as
65 both executable and writable, this is dangerous and the executable
66 should be reported in bugzilla, you must turn on the deny_execmem bool‐
67 ean. Enabled by default.
68 setsebool -P deny_execmem 1
70 If you want to allow all domains to execute in fips_mode, you must turn
74 on the fips_mode boolean. Enabled by default.
75 setsebool -P fips_mode 1
77 If you want to allow confined applications to run with kerberos, you
81 must turn on the kerberos_enabled boolean. Enabled by default.
82 setsebool -P kerberos_enabled 1
84 If you want to control the ability to mmap a low area of the address
88 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
89 the mmap_low_allowed boolean. Disabled by default.
90 setsebool -P mmap_low_allowed 1
92 If you want to allow system to run with NIS, you must turn on the
96 nis_enabled boolean. Disabled by default.
97 setsebool -P nis_enabled 1
99 If you want to allow confined applications to use nscd shared memory,
103 you must turn on the nscd_use_shm boolean. Disabled by default.
104 setsebool -P nscd_use_shm 1
106 If you want to disable kernel module loading, you must turn on the
110 secure_mode_insmod boolean. Enabled by default.
111 setsebool -P secure_mode_insmod 1
113 If you want to allow unconfined executables to make their heap memory
117 executable. Doing this is a really bad idea. Probably indicates a
118 badly coded executable, but could indicate an attack. This executable
119 should be reported in bugzilla, you must turn on the selin‐
120 uxuser_execheap boolean. Disabled by default.
121 setsebool -P selinuxuser_execheap 1
123 If you want to allow unconfined executables to make their stack exe‐
127 cutable. This should never, ever be necessary. Probably indicates a
128 badly coded executable, but could indicate an attack. This executable
129 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
130 stack boolean. Enabled by default.
131 setsebool -P selinuxuser_execstack 1
133
137 SELinux defines port types to represent TCP and UDP ports.
138 You can see the types associated with a port by using the following
140 command:
141 semanage port -l
143 Policy governs the access confined processes have to these ports.
146 SELinux inetd policy is very flexible allowing users to setup their
147 inetd processes in as secure a method as possible.
148 The following port types are defined for inetd:
150 inetd_child_port_t
153 Default Defined Ports:
157 tcp 1,9,13,19,512,544,891,892,5666
158 udp 1,9,13,19,891,892
159
161 The SELinux process type inetd_t can manage files labeled with the fol‐
162 lowing file types. The paths listed are the default paths for these
163 file types. Note the processes UID still need to have DAC permissions.
164 file_type
166 all files on the system
168
171 SELinux requires files to have an extended attribute to define the file
172 type.
173 You can see the context of a file using the -Z option to ls
175 Policy governs the access confined processes have to these files.
177 SELinux inetd policy is very flexible allowing users to setup their
178 inetd processes in as secure a method as possible.
179 STANDARD FILE CONTEXT
181 SELinux defines the file context types for the inetd, if you wanted to
183 store files with these types in a diffent paths, you need to execute
184 the semanage command to sepecify alternate labeling and then use
185 restorecon to put the labels on disk.
186 semanage fcontext -a -t inetd_child_var_run_t '/srv/myinetd_con‐
188 tent(/.*)?'
189 restorecon -R -v /srv/myinetd_content
190 Note: SELinux often uses regular expressions to specify labels that
192 match multiple files.
193 The following file types are defined for inetd:
195 inetd_child_exec_t
199 - Set files with the inetd_child_exec_t type, if you want to transition
201 an executable to the inetd_child_t domain.
202 Paths:
205 /usr/sbin/in..*d, /usr/lib/pysieved/pysieved.*.py,
206 /usr/local/lib/pysieved/pysieved.*.py, /usr/sbin/identd
207 inetd_child_tmp_t
210 - Set files with the inetd_child_tmp_t type, if you want to store inetd
212 child temporary files in the /tmp directories.
213 inetd_child_var_run_t
217 - Set files with the inetd_child_var_run_t type, if you want to store
219 the inetd child files under the /run or /var/run directory.
220 inetd_exec_t
224 - Set files with the inetd_exec_t type, if you want to transition an
226 executable to the inetd_t domain.
227 Paths:
230 /usr/sbin/(x)?inetd, /usr/sbin/rlinetd
231 inetd_log_t
234 - Set files with the inetd_log_t type, if you want to treat the data as
236 inetd log data, usually stored under the /var/log directory.
237 inetd_tmp_t
241 - Set files with the inetd_tmp_t type, if you want to store inetd tem‐
243 porary files in the /tmp directories.
244 inetd_var_run_t
248 - Set files with the inetd_var_run_t type, if you want to store the
250 inetd files under the /run or /var/run directory.
251 Note: File context can be temporarily modified with the chcon command.
255 If you want to permanently change the file context you need to use the
256 semanage fcontext command. This will modify the SELinux labeling data‐
257 base. You will need to use restorecon to apply the labels.
258
261 semanage fcontext can also be used to manipulate default file context
262 mappings.
263 semanage permissive can also be used to manipulate whether or not a
265 process type is permissive.
266 semanage module can also be used to enable/disable/install/remove pol‐
268 icy modules.
269 semanage port can also be used to manipulate the port definitions
271 semanage boolean can also be used to manipulate the booleans
273 system-config-selinux is a GUI tool available to customize SELinux pol‐
276 icy settings.
277
280 This manual page was auto-generated using sepolicy manpage .
281
284 selinux(8), inetd(8), semanage(8), restorecon(8), chcon(1), sepol‐
285 icy(8), setsebool(8), inetd_child_selinux(8)
286inetd 19-05-30 inetd_selinux(8)