realmd_selinux(8)

1realmd_selinux(8)            SELinux Policy realmd           realmd_selinux(8)
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NAME

6       realmd_selinux  -  Security  Enhanced  Linux Policy for the realmd pro‐
7       cesses
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DESCRIPTION

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

24       The  realmd_t  SELinux  type  can be entered via the realmd_exec_t file
25       type.
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27       The default entrypoint paths for the realmd_t domain are the following:
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29       /usr/libexec/realmd, /usr/lib/realmd/realmd
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PROCESS TYPES

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

52       SELinux policy is customizable based on least access required.   realmd
53       policy is extremely flexible and has several booleans that allow you to
54       manipulate the policy and run realmd with the tightest access possible.
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58       If you want to dontaudit all  daemons  scheduling  requests  (setsched,
59       sys_nice),  you  must turn on the daemons_dontaudit_scheduling boolean.
60       Enabled by default.
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62       setsebool -P daemons_dontaudit_scheduling 1
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66       If you want to deny user domains applications to map a memory region as
67       both  executable  and  writable,  this  is dangerous and the executable
68       should be reported in bugzilla, you must turn on the deny_execmem bool‐
69       ean. Disabled by default.
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71       setsebool -P deny_execmem 1
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75       If  you  want  to control the ability to mmap a low area of the address
76       space, as configured by /proc/sys/vm/mmap_min_addr, you  must  turn  on
77       the mmap_low_allowed boolean. Disabled by default.
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79       setsebool -P mmap_low_allowed 1
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83       If  you  want  to  allow  system  to run with NIS, you must turn on the
84       nis_enabled boolean. Disabled by default.
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86       setsebool -P nis_enabled 1
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90       If you want to disable kernel module loading, you must turn on the  se‐
91       cure_mode_insmod boolean. Disabled by default.
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93       setsebool -P secure_mode_insmod 1
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97       If  you  want to allow unconfined executables to make their heap memory
98       executable.  Doing this is a really  bad  idea.  Probably  indicates  a
99       badly  coded  executable, but could indicate an attack. This executable
100       should be reported in bugzilla, you must turn  on  the  selinuxuser_ex‐
101       echeap boolean. Disabled by default.
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103       setsebool -P selinuxuser_execheap 1
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107       If  you  want  to allow unconfined executables to make their stack exe‐
108       cutable.  This should never, ever be necessary.  Probably  indicates  a
109       badly  coded  executable, but could indicate an attack. This executable
110       should be reported in bugzilla, you must turn on the  selinuxuser_exec‐
111       stack boolean. Enabled by default.
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113       setsebool -P selinuxuser_execstack 1
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MANAGED FILES

118       The  SELinux  process  type  realmd_t can manage files labeled with the
119       following file types.  The paths listed are the default paths for these
120       file types.  Note the processes UID still need to have DAC permissions.
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122       file_type
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124            all files on the system
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FILE CONTEXTS

128       SELinux requires files to have an extended attribute to define the file
129       type.
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131       You can see the context of a file using the -Z option to ls
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133       Policy governs the access  confined  processes  have  to  these  files.
134       SELinux  realmd  policy  is very flexible allowing users to setup their
135       realmd processes in as secure a method as possible.
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137       STANDARD FILE CONTEXT
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139       SELinux defines the file context types for the realmd, if you wanted to
140       store  files with these types in a different paths, you need to execute
141       the semanage command to specify alternate labeling  and  then  use  re‐
142       storecon to put the labels on disk.
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144       semanage fcontext -a -t realmd_exec_t '/srv/realmd/content(/.*)?'
145       restorecon -R -v /srv/myrealmd_content
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147       Note:  SELinux  often  uses  regular expressions to specify labels that
148       match multiple files.
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150       The following file types are defined for realmd:
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154       realmd_exec_t
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156       - Set files with the realmd_exec_t type, if you want to  transition  an
157       executable to the realmd_t domain.
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160       Paths:
161            /usr/libexec/realmd, /usr/lib/realmd/realmd
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164       realmd_tmp_t
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166       -  Set  files  with  the realmd_tmp_t type, if you want to store realmd
167       temporary files in the /tmp directories.
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171       realmd_var_cache_t
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173       - Set files with the realmd_var_cache_t type, if you want to store  the
174       files under the /var/cache directory.
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178       realmd_var_lib_t
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180       -  Set  files  with the realmd_var_lib_t type, if you want to store the
181       realmd files under the /var/lib directory.
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185       Note: File context can be temporarily modified with the chcon  command.
186       If  you want to permanently change the file context you need to use the
187       semanage fcontext command.  This will modify the SELinux labeling data‐
188       base.  You will need to use restorecon to apply the labels.
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COMMANDS

192       semanage  fcontext  can also be used to manipulate default file context
193       mappings.
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195       semanage permissive can also be used to manipulate  whether  or  not  a
196       process type is permissive.
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198       semanage  module can also be used to enable/disable/install/remove pol‐
199       icy modules.
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201       semanage boolean can also be used to manipulate the booleans
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204       system-config-selinux is a GUI tool available to customize SELinux pol‐
205       icy settings.
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AUTHOR

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