1nova_vncproxy_selinux(8) SELinux Policy nova_vncproxy nova_vncproxy_selinux(8)
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6 nova_vncproxy_selinux - Security Enhanced Linux Policy for the
7 nova_vncproxy processes
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10 Security-Enhanced Linux secures the nova_vncproxy processes via flexi‐
11 ble mandatory access control.
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13 The nova_vncproxy processes execute with the nova_vncproxy_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 nova_vncproxy_t
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24 The nova_vncproxy_t SELinux type can be entered via the file_type,
25 unlabeled_t, proc_type, filesystem_type, mtrr_device_t, sysctl_type,
26 nova_vncproxy_exec_t file types.
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28 The default entrypoint paths for the nova_vncproxy_t domain are the
29 following:
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31 all files on the system, /dev/cpu/mtrr, /usr/bin/nova-vncproxy,
32 /usr//bin/nova-xvpvncproxy
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35 SELinux defines process types (domains) for each process running on the
36 system
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38 You can see the context of a process using the -Z option to ps
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40 Policy governs the access confined processes have to files. SELinux
41 nova_vncproxy policy is very flexible allowing users to setup their
42 nova_vncproxy processes in as secure a method as possible.
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44 The following process types are defined for nova_vncproxy:
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46 nova_vncproxy_t
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48 Note: semanage permissive -a nova_vncproxy_t can be used to make the
49 process type nova_vncproxy_t permissive. SELinux does not deny access
50 to permissive process types, but the AVC (SELinux denials) messages are
51 still generated.
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55 SELinux policy is customizable based on least access required.
56 nova_vncproxy policy is extremely flexible and has several booleans
57 that allow you to manipulate the policy and run nova_vncproxy with the
58 tightest access possible.
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62 If you want to allow all daemons to write corefiles to /, you must turn
63 on the allow_daemons_dump_core boolean. Disabled by default.
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65 setsebool -P allow_daemons_dump_core 1
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69 If you want to allow all daemons to use tcp wrappers, you must turn on
70 the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
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72 setsebool -P allow_daemons_use_tcp_wrapper 1
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76 If you want to allow all daemons the ability to read/write terminals,
77 you must turn on the allow_daemons_use_tty boolean. Disabled by
78 default.
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80 setsebool -P allow_daemons_use_tty 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 allow_domain_fd_use boolean. Enabled by default.
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87 setsebool -P allow_domain_fd_use 1
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91 If you want to allow unconfined executables to make their heap memory
92 executable. Doing this is a really bad idea. Probably indicates a
93 badly coded executable, but could indicate an attack. This executable
94 should be reported in bugzilla, you must turn on the allow_execheap
95 boolean. Disabled by default.
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97 setsebool -P allow_execheap 1
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101 If you want to allow unconfined executables to map a memory region as
102 both executable and writable, this is dangerous and the executable
103 should be reported in bugzilla), you must turn on the allow_execmem
104 boolean. Enabled by default.
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106 setsebool -P allow_execmem 1
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110 If you want to allow all unconfined executables to use libraries
111 requiring text relocation that are not labeled textrel_shlib_t), you
112 must turn on the allow_execmod boolean. Enabled by default.
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114 setsebool -P allow_execmod 1
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118 If you want to allow unconfined executables to make their stack exe‐
119 cutable. This should never, ever be necessary. Probably indicates a
120 badly coded executable, but could indicate an attack. This executable
121 should be reported in bugzilla), you must turn on the allow_execstack
122 boolean. Enabled by default.
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124 setsebool -P allow_execstack 1
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128 If you want to allow sysadm to debug or ptrace all processes, you must
129 turn on the allow_ptrace boolean. Disabled by default.
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131 setsebool -P allow_ptrace 1
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135 If you want to enable cluster mode for daemons, you must turn on the
136 daemons_enable_cluster_mode boolean. Disabled by default.
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138 setsebool -P daemons_enable_cluster_mode 1
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142 If you want to allow all domains to have the kernel load modules, you
143 must turn on the domain_kernel_load_modules boolean. Disabled by
144 default.
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146 setsebool -P domain_kernel_load_modules 1
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150 If you want to allow all domains to execute in fips_mode, you must turn
151 on the fips_mode boolean. Enabled by default.
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153 setsebool -P fips_mode 1
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157 If you want to enable reading of urandom for all domains, you must turn
158 on the global_ssp boolean. Disabled by default.
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160 setsebool -P global_ssp 1
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164 If you want to enable support for upstart as the init program, you must
165 turn on the init_upstart boolean. Enabled by default.
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167 setsebool -P init_upstart 1
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171 If you want to allow certain domains to map low memory in the kernel,
172 you must turn on the mmap_low_allowed boolean. Disabled by default.
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174 setsebool -P mmap_low_allowed 1
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178 If you want to boolean to determine whether the system permits loading
179 policy, setting enforcing mode, and changing boolean values. Set this
180 to true and you have to reboot to set it back, you must turn on the
181 secure_mode_policyload boolean. Disabled by default.
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183 setsebool -P secure_mode_policyload 1
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187 If you want to support X userspace object manager, you must turn on the
188 xserver_object_manager boolean. Disabled by default.
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190 setsebool -P xserver_object_manager 1
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195 The SELinux process type nova_vncproxy_t can manage files labeled with
196 the following file types. The paths listed are the default paths for
197 these file types. Note the processes UID still need to have DAC per‐
198 missions.
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200 file_type
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202 all files on the system
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206 SELinux requires files to have an extended attribute to define the file
207 type.
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209 You can see the context of a file using the -Z option to ls
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211 Policy governs the access confined processes have to these files.
212 SELinux nova_vncproxy policy is very flexible allowing users to setup
213 their nova_vncproxy processes in as secure a method as possible.
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215 STANDARD FILE CONTEXT
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217 SELinux defines the file context types for the nova_vncproxy, if you
218 wanted to store files with these types in a diffent paths, you need to
219 execute the semanage command to sepecify alternate labeling and then
220 use restorecon to put the labels on disk.
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222 semanage fcontext -a -t nova_vncproxy_tmp_t '/srv/mynova_vncproxy_con‐
223 tent(/.*)?'
224 restorecon -R -v /srv/mynova_vncproxy_content
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226 Note: SELinux often uses regular expressions to specify labels that
227 match multiple files.
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229 The following file types are defined for nova_vncproxy:
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233 nova_vncproxy_exec_t
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235 - Set files with the nova_vncproxy_exec_t type, if you want to transi‐
236 tion an executable to the nova_vncproxy_t domain.
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239 Paths:
240 /usr/bin/nova-vncproxy, /usr//bin/nova-xvpvncproxy
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243 nova_vncproxy_initrc_exec_t
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245 - Set files with the nova_vncproxy_initrc_exec_t type, if you want to
246 transition an executable to the nova_vncproxy_initrc_t domain.
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250 nova_vncproxy_tmp_t
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252 - Set files with the nova_vncproxy_tmp_t type, if you want to store
253 nova vncproxy temporary files in the /tmp directories.
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257 Note: File context can be temporarily modified with the chcon command.
258 If you want to permanently change the file context you need to use the
259 semanage fcontext command. This will modify the SELinux labeling data‐
260 base. You will need to use restorecon to apply the labels.
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264 semanage fcontext can also be used to manipulate default file context
265 mappings.
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267 semanage permissive can also be used to manipulate whether or not a
268 process type is permissive.
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270 semanage module can also be used to enable/disable/install/remove pol‐
271 icy modules.
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273 semanage boolean can also be used to manipulate the booleans
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276 system-config-selinux is a GUI tool available to customize SELinux pol‐
277 icy settings.
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281 This manual page was auto-generated using sepolicy manpage .
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285 selinux(8), nova_vncproxy(8), semanage(8), restorecon(8), chcon(1) ,
286 setsebool(8)
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290nova_vncproxy 15-06-03 nova_vncproxy_selinux(8)