1chronyc_selinux(8) SELinux Policy chronyc chronyc_selinux(8)
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6 chronyc_selinux - Security Enhanced Linux Policy for the chronyc pro‐
7 cesses
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10 Security-Enhanced Linux secures the chronyc processes via flexible
11 mandatory access control.
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13 The chronyc processes execute with the chronyc_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 chronyc_t
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24 The chronyc_t SELinux type can be entered via the chronyc_exec_t file
25 type.
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27 The default entrypoint paths for the chronyc_t domain are the follow‐
28 ing:
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30 /usr/bin/chronyc
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33 SELinux defines process types (domains) for each process running on the
34 system
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36 You can see the context of a process using the -Z option to ps
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38 Policy governs the access confined processes have to files. SELinux
39 chronyc policy is very flexible allowing users to setup their chronyc
40 processes in as secure a method as possible.
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42 The following process types are defined for chronyc:
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44 chronyc_t
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46 Note: semanage permissive -a chronyc_t can be used to make the process
47 type chronyc_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
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53 SELinux policy is customizable based on least access required. chronyc
54 policy is extremely flexible and has several booleans that allow you to
55 manipulate the policy and run chronyc with the tightest access possi‐
56 ble.
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60 If you want to allow all domains to execute in fips_mode, you must turn
61 on the fips_mode boolean. Enabled by default.
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63 setsebool -P fips_mode 1
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67 If you want to allow system to run with NIS, you must turn on the
68 nis_enabled boolean. Disabled by default.
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70 setsebool -P nis_enabled 1
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75 The SELinux process type chronyc_t can manage files labeled with the
76 following file types. The paths listed are the default paths for these
77 file types. Note the processes UID still need to have DAC permissions.
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79 krb5_host_rcache_t
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81 /var/tmp/krb5_0.rcache2
82 /var/cache/krb5rcache(/.*)?
83 /var/tmp/nfs_0
84 /var/tmp/DNS_25
85 /var/tmp/host_0
86 /var/tmp/imap_0
87 /var/tmp/HTTP_23
88 /var/tmp/HTTP_48
89 /var/tmp/ldap_55
90 /var/tmp/ldap_487
91 /var/tmp/ldapmap1_0
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93 non_security_file_type
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98 SELinux requires files to have an extended attribute to define the file
99 type.
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101 You can see the context of a file using the -Z option to ls
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103 Policy governs the access confined processes have to these files.
104 SELinux chronyc policy is very flexible allowing users to setup their
105 chronyc processes in as secure a method as possible.
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107 The following file types are defined for chronyc:
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111 chronyc_exec_t
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113 - Set files with the chronyc_exec_t type, if you want to transition an
114 executable to the chronyc_t domain.
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118 Note: File context can be temporarily modified with the chcon command.
119 If you want to permanently change the file context you need to use the
120 semanage fcontext command. This will modify the SELinux labeling data‐
121 base. You will need to use restorecon to apply the labels.
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125 semanage fcontext can also be used to manipulate default file context
126 mappings.
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128 semanage permissive can also be used to manipulate whether or not a
129 process type is permissive.
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131 semanage module can also be used to enable/disable/install/remove pol‐
132 icy modules.
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134 semanage boolean can also be used to manipulate the booleans
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137 system-config-selinux is a GUI tool available to customize SELinux pol‐
138 icy settings.
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142 This manual page was auto-generated using sepolicy manpage .
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146 selinux(8), chronyc(8), semanage(8), restorecon(8), chcon(1), sepol‐
147 icy(8), setsebool(8)
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151chronyc 21-06-09 chronyc_selinux(8)