1httpd_helper_selinux(8) SELinux Policy httpd_helper httpd_helper_selinux(8)
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6 httpd_helper_selinux - Security Enhanced Linux Policy for the
7 httpd_helper processes
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10 Security-Enhanced Linux secures the httpd_helper processes via flexible
11 mandatory access control.
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13 The httpd_helper processes execute with the httpd_helper_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep httpd_helper_t
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24 The httpd_helper_t SELinux type can be entered via the
25 httpd_helper_exec_t file type.
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27 The default entrypoint paths for the httpd_helper_t domain are the fol‐
28 lowing:
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30 /usr/bin/htsslpass
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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 httpd_helper policy is very flexible allowing users to setup their
40 httpd_helper processes in as secure a method as possible.
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42 The following process types are defined for httpd_helper:
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44 httpd_helper_t
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46 Note: semanage permissive -a httpd_helper_t can be used to make the
47 process type httpd_helper_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
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53 SELinux policy is customizable based on least access required.
54 httpd_helper policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run httpd_helper with the tight‐
56 est access possible.
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60 If you want to deny any process from ptracing or debugging any other
61 processes, you must turn on the deny_ptrace boolean. Enabled by
62 default.
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64 setsebool -P deny_ptrace 1
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68 If you want to allow any process to mmap any file on system with
69 attribute file_type, you must turn on the domain_can_mmap_files bool‐
70 ean. Enabled by default.
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72 setsebool -P domain_can_mmap_files 1
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76 If you want to allow all domains write to kmsg_device, while kernel is
77 executed with systemd.log_target=kmsg parameter, you must turn on the
78 domain_can_write_kmsg boolean. Disabled by default.
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80 setsebool -P domain_can_write_kmsg 1
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84 If you want to allow all domains to use other domains file descriptors,
85 you must turn on the domain_fd_use boolean. Enabled by default.
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87 setsebool -P domain_fd_use 1
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91 If you want to allow all domains to have the kernel load modules, you
92 must turn on the domain_kernel_load_modules boolean. Disabled by
93 default.
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95 setsebool -P domain_kernel_load_modules 1
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99 If you want to allow all domains to execute in fips_mode, you must turn
100 on the fips_mode boolean. Enabled by default.
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102 setsebool -P fips_mode 1
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106 If you want to enable reading of urandom for all domains, you must turn
107 on the global_ssp boolean. Disabled by default.
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109 setsebool -P global_ssp 1
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113 If you want to unify HTTPD to communicate with the terminal. Needed for
114 entering the passphrase for certificates at the terminal, you must turn
115 on the httpd_tty_comm boolean. Disabled by default.
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117 setsebool -P httpd_tty_comm 1
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122 SELinux requires files to have an extended attribute to define the file
123 type.
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125 You can see the context of a file using the -Z option to ls
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127 Policy governs the access confined processes have to these files.
128 SELinux httpd_helper policy is very flexible allowing users to setup
129 their httpd_helper processes in as secure a method as possible.
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131 The following file types are defined for httpd_helper:
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135 httpd_helper_exec_t
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137 - Set files with the httpd_helper_exec_t type, if you want to transi‐
138 tion an executable to the httpd_helper_t domain.
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142 Note: File context can be temporarily modified with the chcon command.
143 If you want to permanently change the file context you need to use the
144 semanage fcontext command. This will modify the SELinux labeling data‐
145 base. You will need to use restorecon to apply the labels.
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149 semanage fcontext can also be used to manipulate default file context
150 mappings.
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152 semanage permissive can also be used to manipulate whether or not a
153 process type is permissive.
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155 semanage module can also be used to enable/disable/install/remove pol‐
156 icy modules.
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158 semanage boolean can also be used to manipulate the booleans
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161 system-config-selinux is a GUI tool available to customize SELinux pol‐
162 icy settings.
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166 This manual page was auto-generated using sepolicy manpage .
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170 selinux(8), httpd_helper(8), semanage(8), restorecon(8), chcon(1),
171 sepolicy(8) , setsebool(8)
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175httpd_helper 19-04-25 httpd_helper_selinux(8)