1sandbox_x_selinux(8) SELinux Policy sandbox_x sandbox_x_selinux(8)
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6 sandbox_x_selinux - Security Enhanced Linux Policy for the sandbox_x
7 processes
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10 Security-Enhanced Linux secures the sandbox_x processes via flexible
11 mandatory access control.
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13 The sandbox_x processes execute with the sandbox_x_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep sandbox_x_t
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24 SELinux defines process types (domains) for each process running on the
25 system
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27 You can see the context of a process using the -Z option to ps
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29 Policy governs the access confined processes have to files. SELinux
30 sandbox_x policy is very flexible allowing users to setup their sand‐
31 box_x processes in as secure a method as possible.
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33 The following process types are defined for sandbox_x:
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35 sandbox_xserver_t, sandbox_x_t, sandbox_x_client_t
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37 Note: semanage permissive -a sandbox_x_t can be used to make the
38 process type sandbox_x_t permissive. SELinux does not deny access to
39 permissive process types, but the AVC (SELinux denials) messages are
40 still generated.
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44 The SELinux process type sandbox_x_t is an MCS (Multi Category Secu‐
45 rity) constrained type. Sometimes this separation is referred to as
46 sVirt. These types are usually used for securing multi-tenant environ‐
47 ments, such as virtualization, containers or separation of users. The
48 tools used to launch MCS types, pick out a different MCS label for each
49 process group.
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51 For example one process might be launched with sandbox_x_t:s0:c1,c2,
52 and another process launched with sandbox_x_t:s0:c3,c4. The SELinux
53 kernel only allows these processes can only write to content with a
54 matching MCS label, or a MCS Label of s0. A process running with the
55 MCS level of s0:c1,c2 is not allowed to write to content with the MCS
56 label of s0:c3,c4
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60 SELinux policy is customizable based on least access required. sand‐
61 box_x policy is extremely flexible and has several booleans that allow
62 you to manipulate the policy and run sandbox_x with the tightest access
63 possible.
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67 If you want to allow users to resolve user passwd entries directly from
68 ldap rather then using a sssd server, you must turn on the authlo‐
69 gin_nsswitch_use_ldap boolean. Disabled by default.
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71 setsebool -P authlogin_nsswitch_use_ldap 1
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75 If you want to deny user domains applications to map a memory region as
76 both executable and writable, this is dangerous and the executable
77 should be reported in bugzilla, you must turn on the deny_execmem bool‐
78 ean. Enabled by default.
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80 setsebool -P deny_execmem 1
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84 If you want to allow all domains to execute in fips_mode, you must turn
85 on the fips_mode boolean. Enabled by default.
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87 setsebool -P fips_mode 1
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91 If you want to allow confined applications to run with kerberos, you
92 must turn on the kerberos_enabled boolean. Enabled by default.
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94 setsebool -P kerberos_enabled 1
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98 If you want to allow system to run with NIS, you must turn on the
99 nis_enabled boolean. Disabled by default.
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101 setsebool -P nis_enabled 1
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105 If you want to allow confined applications to use nscd shared memory,
106 you must turn on the nscd_use_shm boolean. Disabled by default.
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108 setsebool -P nscd_use_shm 1
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113 The SELinux process type sandbox_x_t can manage files labeled with the
114 following file types. The paths listed are the default paths for these
115 file types. Note the processes UID still need to have DAC permissions.
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117 cifs_t
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120 fusefs_t
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122 /var/run/user/[^/]*/gvfs
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124 mozilla_plugin_rw_t
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126 /usr/lib/mozilla/plugins-wrapped(/.*)?
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128 mozilla_plugin_tmpfs_t
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131 nfs_t
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134 sandbox_file_t
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137 sandbox_x_client_tmpfs_t
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140 security_t
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142 /selinux
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144 user_tmp_t
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146 /dev/shm/mono.*
147 /var/run/user(/.*)?
148 /tmp/.ICE-unix(/.*)?
149 /tmp/.X11-unix(/.*)?
150 /dev/shm/pulse-shm.*
151 /tmp/.X0-lock
152 /tmp/hsperfdata_root
153 /var/tmp/hsperfdata_root
154 /home/[^/]+/tmp
155 /home/[^/]+/.tmp
156 /tmp/gconfd-[^/]+
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160 semanage fcontext can also be used to manipulate default file context
161 mappings.
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163 semanage permissive can also be used to manipulate whether or not a
164 process type is permissive.
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166 semanage module can also be used to enable/disable/install/remove pol‐
167 icy modules.
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169 semanage boolean can also be used to manipulate the booleans
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172 system-config-selinux is a GUI tool available to customize SELinux pol‐
173 icy settings.
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177 This manual page was auto-generated using sepolicy manpage .
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181 selinux(8), sandbox_x(8), semanage(8), restorecon(8), chcon(1), sepol‐
182 icy(8), setsebool(8), sandbox_x_client_selinux(8), sand‐
183 box_x_client_selinux(8)
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187sandbox_x 19-05-30 sandbox_x_selinux(8)