ndc_selinux(8)

1ndc_selinux(8)                SELinux Policy ndc                ndc_selinux(8)
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NAME

6       ndc_selinux - Security Enhanced Linux Policy for the ndc processes
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DESCRIPTION

9       Security-Enhanced  Linux  secures the ndc processes via flexible manda‐
10       tory access control.
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12       The ndc processes execute with the ndc_t SELinux type. You can check if
13       you  have  these processes running by executing the ps command with the
14       -Z qualifier.
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16       For example:
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18       ps -eZ | grep ndc_t
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ENTRYPOINTS

23       The ndc_t SELinux type can be entered via the ndc_exec_t file type.
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25       The default entrypoint paths for the ndc_t domain are the following:
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27       /usr/sbin/r?ndc
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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       ndc policy is very flexible allowing users to setup their ndc processes
37       in as secure a method as possible.
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39       The following process types are defined for ndc:
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41       ndc_t
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43       Note: semanage permissive -a ndc_t can be used to make the process type
44       ndc_t permissive. SELinux does not deny access  to  permissive  process
45       types, but the AVC (SELinux denials) messages are still generated.
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BOOLEANS

49       SELinux  policy  is  customizable  based on least access required.  ndc
50       policy is extremely flexible and has several booleans that allow you to
51       manipulate the policy and run ndc with the tightest access possible.
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55       If you want to allow users to resolve user passwd entries directly from
56       ldap rather then using a sssd server, you  must  turn  on  the  authlo‐
57       gin_nsswitch_use_ldap boolean. Disabled by default.
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59       setsebool -P authlogin_nsswitch_use_ldap 1
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63       If  you  want to allow all daemons the ability to read/write terminals,
64       you must turn on the daemons_use_tty boolean. Disabled by default.
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66       setsebool -P daemons_use_tty 1
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70       If you want to deny any process from ptracing or  debugging  any  other
71       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
72       default.
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74       setsebool -P deny_ptrace 1
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78       If you want to allow any process  to  mmap  any  file  on  system  with
79       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
80       ean. Enabled by default.
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82       setsebool -P domain_can_mmap_files 1
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86       If you want to allow all domains write to kmsg_device, while kernel  is
87       executed  with  systemd.log_target=kmsg parameter, you must turn on the
88       domain_can_write_kmsg boolean. Disabled by default.
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90       setsebool -P domain_can_write_kmsg 1
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94       If you want to allow all domains to use other domains file descriptors,
95       you must turn on the domain_fd_use boolean. Enabled by default.
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97       setsebool -P domain_fd_use 1
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101       If  you  want to allow all domains to have the kernel load modules, you
102       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
103       default.
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105       setsebool -P domain_kernel_load_modules 1
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109       If you want to allow all domains to execute in fips_mode, you must turn
110       on the fips_mode boolean. Enabled by default.
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112       setsebool -P fips_mode 1
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116       If you want to enable reading of urandom for all domains, you must turn
117       on the global_ssp boolean. Disabled by default.
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119       setsebool -P global_ssp 1
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123       If  you  want  to allow confined applications to run with kerberos, you
124       must turn on the kerberos_enabled boolean. Enabled by default.
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126       setsebool -P kerberos_enabled 1
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130       If you want to allow system to run with  NIS,  you  must  turn  on  the
131       nis_enabled boolean. Disabled by default.
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133       setsebool -P nis_enabled 1
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137       If  you  want to allow confined applications to use nscd shared memory,
138       you must turn on the nscd_use_shm boolean. Disabled by default.
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140       setsebool -P nscd_use_shm 1
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FILE CONTEXTS

145       SELinux requires files to have an extended attribute to define the file
146       type.
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148       You can see the context of a file using the -Z option to ls
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150       Policy  governs  the  access  confined  processes  have to these files.
151       SELinux ndc policy is very flexible allowing users to setup  their  ndc
152       processes in as secure a method as possible.
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154       The following file types are defined for ndc:
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158       ndc_exec_t
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160       - Set files with the ndc_exec_t type, if you want to transition an exe‐
161       cutable to the ndc_t domain.
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165       Note: File context can be temporarily modified with the chcon  command.
166       If  you want to permanently change the file context you need to use the
167       semanage fcontext command.  This will modify the SELinux labeling data‐
168       base.  You will need to use restorecon to apply the labels.
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COMMANDS

172       semanage  fcontext  can also be used to manipulate default file context
173       mappings.
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175       semanage permissive can also be used to manipulate  whether  or  not  a
176       process type is permissive.
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178       semanage  module can also be used to enable/disable/install/remove pol‐
179       icy modules.
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181       semanage boolean can also be used to manipulate the booleans
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184       system-config-selinux is a GUI tool available to customize SELinux pol‐
185       icy settings.
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AUTHOR

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