inetd_selinux(8)

1inetd_selinux(8)             SELinux Policy inetd             inetd_selinux(8)
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NAME

6       inetd_selinux - Security Enhanced Linux Policy for the inetd processes
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DESCRIPTION

9       Security-Enhanced Linux secures the inetd processes via flexible manda‐
10       tory access control.
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12       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.
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16       For example:
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18       ps -eZ | grep inetd_t
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ENTRYPOINTS

23       The inetd_t SELinux type can be entered via the inetd_exec_t file type.
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25       The default entrypoint paths for the inetd_t domain are the following:
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27       /usr/sbin/(x)?inetd, /usr/sbin/rlinetd
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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       inetd policy is very flexible allowing users to setup their inetd  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for inetd:
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41       inetd_t, inetd_child_t
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43       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.
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BOOLEANS

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.
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56       If you want to dontaudit all  daemons  scheduling  requests  (setsched,
57       sys_nice),  you  must turn on the daemons_dontaudit_scheduling boolean.
58       Enabled by default.
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60       setsebool -P daemons_dontaudit_scheduling 1
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64       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. Disabled by default.
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69       setsebool -P deny_execmem 1
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73       If  you  want  to control the ability to mmap a low area of the address
74       space, as configured by /proc/sys/vm/mmap_min_addr, you  must  turn  on
75       the mmap_low_allowed boolean. Disabled by default.
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77       setsebool -P mmap_low_allowed 1
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81       If  you  want  to  allow  system  to run with NIS, you must turn on the
82       nis_enabled boolean. Disabled by default.
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84       setsebool -P nis_enabled 1
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88       If you want to disable kernel module loading, you must turn on the  se‐
89       cure_mode_insmod boolean. Disabled by default.
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91       setsebool -P secure_mode_insmod 1
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95       If  you  want to allow unconfined executables to make their heap memory
96       executable.  Doing this is a really  bad  idea.  Probably  indicates  a
97       badly  coded  executable, but could indicate an attack. This executable
98       should be reported in bugzilla, you must turn  on  the  selinuxuser_ex‐
99       echeap boolean. Disabled by default.
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101       setsebool -P selinuxuser_execheap 1
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105       If  you  want  to allow unconfined executables to make their stack exe‐
106       cutable.  This should never, ever be necessary.  Probably  indicates  a
107       badly  coded  executable, but could indicate an attack. This executable
108       should be reported in bugzilla, you must turn on the  selinuxuser_exec‐
109       stack boolean. Enabled by default.
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111       setsebool -P selinuxuser_execstack 1
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PORT TYPES

116       SELinux defines port types to represent TCP and UDP ports.
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118       You  can  see  the  types associated with a port by using the following
119       command:
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121       semanage port -l
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124       Policy governs the access  confined  processes  have  to  these  ports.
125       SELinux inetd policy is very flexible allowing users to setup their in‐
126       etd processes in as secure a method as possible.
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128       The following port types are defined for inetd:
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131       inetd_child_port_t
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135       Default Defined Ports:
136                 tcp 1,9,13,19,512,544,891,892,5666
137                 udp 1,9,13,19,891,892
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MANAGED FILES

140       The SELinux process type inetd_t can manage files labeled with the fol‐
141       lowing  file  types.   The paths listed are the default paths for these
142       file types.  Note the processes UID still need to have DAC permissions.
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144       file_type
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146            all files on the system
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FILE CONTEXTS

150       SELinux requires files to have an extended attribute to define the file
151       type.
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153       You can see the context of a file using the -Z option to ls
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155       Policy  governs  the  access  confined  processes  have to these files.
156       SELinux inetd policy is very flexible allowing users to setup their in‐
157       etd processes in as secure a method as possible.
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159       STANDARD FILE CONTEXT
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161       SELinux  defines the file context types for the inetd, if you wanted to
162       store files with these types in a different paths, you need to  execute
163       the  semanage  command  to  specify alternate labeling and then use re‐
164       storecon to put the labels on disk.
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166       semanage fcontext -a -t inetd_exec_t '/srv/inetd/content(/.*)?'
167       restorecon -R -v /srv/myinetd_content
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169       Note: SELinux often uses regular expressions  to  specify  labels  that
170       match multiple files.
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172       The following file types are defined for inetd:
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176       inetd_child_exec_t
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178       - Set files with the inetd_child_exec_t type, if you want to transition
179       an executable to the inetd_child_t domain.
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182       Paths:
183            /usr/sbin/in..*d,    /usr/lib/pysieved/pysieved.*.py,     /usr/lo‐
184            cal/lib/pysieved/pysieved.*.py, /usr/sbin/identd
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187       inetd_child_tmp_t
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189       - Set files with the inetd_child_tmp_t type, if you want to store inetd
190       child temporary files in the /tmp directories.
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194       inetd_child_var_run_t
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196       - Set files with the inetd_child_var_run_t type, if you want  to  store
197       the inetd child files under the /run or /var/run directory.
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201       inetd_exec_t
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203       -  Set  files  with the inetd_exec_t type, if you want to transition an
204       executable to the inetd_t domain.
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207       Paths:
208            /usr/sbin/(x)?inetd, /usr/sbin/rlinetd
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211       inetd_log_t
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213       - Set files with the inetd_log_t type, if you want to treat the data as
214       inetd log data, usually stored under the /var/log directory.
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218       inetd_tmp_t
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220       -  Set files with the inetd_tmp_t type, if you want to store inetd tem‐
221       porary files in the /tmp directories.
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225       inetd_var_run_t
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227       - Set files with the inetd_var_run_t type, if you want to store the in‐
228       etd files under the /run or /var/run directory.
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232       Note:  File context can be temporarily modified with the chcon command.
233       If you want to permanently change the file context you need to use  the
234       semanage fcontext command.  This will modify the SELinux labeling data‐
235       base.  You will need to use restorecon to apply the labels.
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COMMANDS

239       semanage fcontext can also be used to manipulate default  file  context
240       mappings.
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242       semanage  permissive  can  also  be used to manipulate whether or not a
243       process type is permissive.
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245       semanage module can also be used to enable/disable/install/remove  pol‐
246       icy modules.
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248       semanage port can also be used to manipulate the port definitions
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250       semanage boolean can also be used to manipulate the booleans
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253       system-config-selinux is a GUI tool available to customize SELinux pol‐
254       icy settings.
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AUTHOR

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