howl_selinux(8)

1howl_selinux(8)               SELinux Policy howl              howl_selinux(8)
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NAME

6       howl_selinux - Security Enhanced Linux Policy for the howl processes
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DESCRIPTION

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

23       The howl_t SELinux type can be entered via the howl_exec_t file type.
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25       The default entrypoint paths for the howl_t domain are the following:
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27       /usr/bin/nifd, /usr/bin/mDNSResponder
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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       howl policy is very flexible allowing users to setup  their  howl  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for howl:
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41       howl_t
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43       Note:  semanage  permissive  -a  howl_t can be used to make the process
44       type howl_t permissive. SELinux does  not  deny  access  to  permissive
45       process  types, but the AVC (SELinux denials) messages are still gener‐
46       ated.
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BOOLEANS

50       SELinux policy is customizable based on least  access  required.   howl
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run howl with the tightest access possible.
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56       If you want to allow all daemons to write corefiles to /, you must turn
57       on the allow_daemons_dump_core boolean. Disabled by default.
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59       setsebool -P allow_daemons_dump_core 1
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63       If  you want to allow all daemons to use tcp wrappers, you must turn on
64       the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
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66       setsebool -P allow_daemons_use_tcp_wrapper 1
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70       If you want to allow all daemons the ability to  read/write  terminals,
71       you  must  turn  on  the  allow_daemons_use_tty  boolean.  Disabled  by
72       default.
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74       setsebool -P allow_daemons_use_tty 1
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78       If you want to allow all domains to use other domains file descriptors,
79       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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81       setsebool -P allow_domain_fd_use 1
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85       If  you want to allow sysadm to debug or ptrace all processes, you must
86       turn on the allow_ptrace boolean. Disabled by default.
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88       setsebool -P allow_ptrace 1
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92       If you want to allow system to run with  NIS,  you  must  turn  on  the
93       allow_ypbind boolean. Disabled by default.
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95       setsebool -P allow_ypbind 1
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99       If  you  want  to enable cluster mode for daemons, you must turn on the
100       daemons_enable_cluster_mode boolean. Disabled by default.
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102       setsebool -P daemons_enable_cluster_mode 1
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106       If you want to allow all domains to have the kernel load  modules,  you
107       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
108       default.
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110       setsebool -P domain_kernel_load_modules 1
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114       If you want to allow all domains to execute in fips_mode, you must turn
115       on the fips_mode boolean. Enabled by default.
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117       setsebool -P fips_mode 1
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121       If you want to enable reading of urandom for all domains, you must turn
122       on the global_ssp boolean. Disabled by default.
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124       setsebool -P global_ssp 1
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128       If you want to enable support for upstart as the init program, you must
129       turn on the init_upstart boolean. Enabled by default.
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131       setsebool -P init_upstart 1
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PORT TYPES

136       SELinux defines port types to represent TCP and UDP ports.
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138       You  can  see  the  types associated with a port by using the following
139       command:
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141       semanage port -l
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144       Policy governs the access  confined  processes  have  to  these  ports.
145       SELinux howl policy is very flexible allowing users to setup their howl
146       processes in as secure a method as possible.
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148       The following port types are defined for howl:
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150
151       howl_port_t
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155       Default Defined Ports:
156                 tcp 5335
157                 udp 5353
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MANAGED FILES

160       The SELinux process type howl_t can manage files labeled with the  fol‐
161       lowing  file  types.   The paths listed are the default paths for these
162       file types.  Note the processes UID still need to have DAC permissions.
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164       cluster_conf_t
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166            /etc/cluster(/.*)?
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168       cluster_var_lib_t
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170            /var/lib(64)?/openais(/.*)?
171            /var/lib(64)?/pengine(/.*)?
172            /var/lib(64)?/corosync(/.*)?
173            /usr/lib(64)?/heartbeat(/.*)?
174            /var/lib(64)?/heartbeat(/.*)?
175            /var/lib(64)?/pacemaker(/.*)?
176            /var/lib/cluster(/.*)?
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178       cluster_var_run_t
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180            /var/run/crm(/.*)?
181            /var/run/cman_.*
182            /var/run/rsctmp(/.*)?
183            /var/run/aisexec.*
184            /var/run/heartbeat(/.*)?
185            /var/run/cpglockd.pid
186            /var/run/corosync.pid
187            /var/run/rgmanager.pid
188            /var/run/cluster/rgmanager.sk
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190       howl_var_run_t
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192            /var/run/nifd.pid
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194       initrc_tmp_t
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197       initrc_var_run_t
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199            /var/run/utmp
200            /var/run/random-seed
201            /var/run/runlevel.dir
202            /var/run/setmixer_flag
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204       mnt_t
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206            /mnt(/[^/]*)
207            /mnt(/[^/]*)?
208            /rhev(/[^/]*)?
209            /media(/[^/]*)
210            /media(/[^/]*)?
211            /etc/rhgb(/.*)?
212            /media/.hal-.*
213            /net
214            /afs
215            /rhev
216            /misc
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218       root_t
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220            /
221            /initrd
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223       tmp_t
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225            /tmp
226            /usr/tmp
227            /var/tmp
228            /tmp-inst
229            /var/tmp-inst
230            /var/tmp/vi.recover
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FILE CONTEXTS

234       SELinux requires files to have an extended attribute to define the file
235       type.
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237       You can see the context of a file using the -Z option to ls
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239       Policy  governs  the  access  confined  processes  have to these files.
240       SELinux howl policy is very flexible allowing users to setup their howl
241       processes in as secure a method as possible.
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243       STANDARD FILE CONTEXT
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245       SELinux  defines  the file context types for the howl, if you wanted to
246       store files with these types in a diffent paths, you  need  to  execute
247       the  semanage  command  to  sepecify  alternate  labeling  and then use
248       restorecon to put the labels on disk.
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250       semanage fcontext -a -t howl_var_run_t '/srv/myhowl_content(/.*)?'
251       restorecon -R -v /srv/myhowl_content
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253       Note: SELinux often uses regular expressions  to  specify  labels  that
254       match multiple files.
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256       The following file types are defined for howl:
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260       howl_exec_t
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262       -  Set  files  with  the howl_exec_t type, if you want to transition an
263       executable to the howl_t domain.
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266       Paths:
267            /usr/bin/nifd, /usr/bin/mDNSResponder
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270       howl_var_run_t
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272       - Set files with the howl_var_run_t type, if you want to store the howl
273       files under the /run or /var/run directory.
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277       Note:  File context can be temporarily modified with the chcon command.
278       If you want to permanently change the file context you need to use  the
279       semanage fcontext command.  This will modify the SELinux labeling data‐
280       base.  You will need to use restorecon to apply the labels.
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COMMANDS

284       semanage fcontext can also be used to manipulate default  file  context
285       mappings.
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287       semanage  permissive  can  also  be used to manipulate whether or not a
288       process type is permissive.
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290       semanage module can also be used to enable/disable/install/remove  pol‐
291       icy modules.
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293       semanage port can also be used to manipulate the port definitions
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295       semanage boolean can also be used to manipulate the booleans
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298       system-config-selinux is a GUI tool available to customize SELinux pol‐
299       icy settings.
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AUTHOR

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