rshd_selinux(8)

1rshd_selinux(8)               SELinux Policy rshd              rshd_selinux(8)
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NAME

6       rshd_selinux - Security Enhanced Linux Policy for the rshd processes
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DESCRIPTION

9       Security-Enhanced  Linux secures the rshd processes via flexible manda‐
10       tory access control.
11
12       The rshd processes execute with the rshd_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 rshd_t
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ENTRYPOINTS

23       The rshd_t SELinux type can be entered via the rshd_exec_t file type.
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25       The default entrypoint paths for the rshd_t domain are the following:
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27       /usr/sbin/in.rshd, /usr/sbin/in.rexecd, /usr/kerberos/sbin/kshd
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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       rshd policy is very flexible allowing users to setup  their  rshd  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for rshd:
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41       rshd_t
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43       Note:  semanage  permissive  -a  rshd_t can be used to make the process
44       type rshd_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.   rshd
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run rshd with the tightest access possible.
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56       If you want to allow all domains to use other domains file descriptors,
57       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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59       setsebool -P allow_domain_fd_use 1
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63       If  you  want  to allow confined applications to run with kerberos, you
64       must turn on the allow_kerberos boolean. Enabled by default.
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66       setsebool -P allow_kerberos 1
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70       If you want to enable polyinstantiated directory support, you must turn
71       on the allow_polyinstantiation boolean. Enabled by default.
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73       setsebool -P allow_polyinstantiation 1
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77       If  you want to allow sysadm to debug or ptrace all processes, you must
78       turn on the allow_ptrace boolean. Disabled by default.
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80       setsebool -P allow_ptrace 1
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84       If you want to allow system to run with  NIS,  you  must  turn  on  the
85       allow_ypbind boolean. Disabled by default.
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87       setsebool -P allow_ypbind 1
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91       If  you  want  to  allow users to login using a radius server, you must
92       turn on the authlogin_radius boolean. Disabled by default.
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94       setsebool -P authlogin_radius 1
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98       If you want to allow users login programs to  access  /etc/shadow,  you
99       must turn on the authlogin_shadow boolean. Disabled by default.
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101       setsebool -P authlogin_shadow 1
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104
105       If  you  want to allow all domains to have the kernel load modules, you
106       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
107       default.
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109       setsebool -P domain_kernel_load_modules 1
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113       If you want to allow all domains to execute in fips_mode, you must turn
114       on the fips_mode boolean. Enabled by default.
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116       setsebool -P fips_mode 1
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119
120       If you want to enable reading of urandom for all domains, you must turn
121       on the global_ssp boolean. Disabled by default.
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123       setsebool -P global_ssp 1
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126
127       If  you  want to allow confined applications to use nscd shared memory,
128       you must turn on the nscd_use_shm boolean. Enabled by default.
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130       setsebool -P nscd_use_shm 1
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134       If you want to allow a user to login as an unconfined domain, you  must
135       turn on the unconfined_login boolean. Enabled by default.
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137       setsebool -P unconfined_login 1
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140
141       If  you  want  to  support  NFS  home directories, you must turn on the
142       use_nfs_home_dirs boolean. Disabled by default.
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144       setsebool -P use_nfs_home_dirs 1
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148       If you want to support SAMBA home directories, you  must  turn  on  the
149       use_samba_home_dirs boolean. Disabled by default.
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151       setsebool -P use_samba_home_dirs 1
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PORT TYPES

156       SELinux defines port types to represent TCP and UDP ports.
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158       You  can  see  the  types associated with a port by using the following
159       command:
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161       semanage port -l
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163
164       Policy governs the access  confined  processes  have  to  these  ports.
165       SELinux rshd policy is very flexible allowing users to setup their rshd
166       processes in as secure a method as possible.
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168       The following port types are defined for rshd:
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170
171       rsh_port_t
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175       Default Defined Ports:
176                 tcp 514
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MANAGED FILES

179       The SELinux process type rshd_t can manage files labeled with the  fol‐
180       lowing  file  types.   The paths listed are the default paths for these
181       file types.  Note the processes UID still need to have DAC permissions.
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183       auth_cache_t
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185            /var/cache/coolkey(/.*)?
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187       faillog_t
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189            /var/log/btmp.*
190            /var/log/faillog.*
191            /var/log/tallylog.*
192            /var/run/faillock(/.*)?
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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       krb5_host_rcache_t
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206            /var/cache/krb5rcache(/.*)?
207            /var/tmp/host_0
208            /var/tmp/HTTP_23
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210       lastlog_t
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212            /var/log/lastlog.*
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214       mnt_t
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216            /mnt(/[^/]*)
217            /mnt(/[^/]*)?
218            /rhev(/[^/]*)?
219            /media(/[^/]*)
220            /media(/[^/]*)?
221            /etc/rhgb(/.*)?
222            /media/.hal-.*
223            /net
224            /afs
225            /rhev
226            /misc
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228       pam_var_run_t
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230            /var/(db|adm)/sudo(/.*)?
231            /var/run/sudo(/.*)?
232            /var/lib/sudo(/.*)?
233            /var/run/sepermit(/.*)?
234            /var/run/pam_mount(/.*)?
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236       pcscd_var_run_t
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238            /var/run/pcscd.events(/.*)?
239            /var/run/pcscd.pid
240            /var/run/pcscd.pub
241            /var/run/pcscd.comm
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243       security_t
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245
246       tmp_t
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248            /tmp
249            /usr/tmp
250            /var/tmp
251            /tmp-inst
252            /var/tmp-inst
253            /var/tmp/vi.recover
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255       user_home_t
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257            /home/[^/]*/.+
258            /home/staff/.+
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260       var_auth_t
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262            /var/ace(/.*)?
263            /var/rsa(/.*)?
264            /var/lib/rsa(/.*)?
265            /var/lib/abl(/.*)?
266            /var/run/pam_ssh(/.*)?
267            /var/lib/pam_ssh(/.*)?
268            /var/lib/pam_shield(/.*)?
269            /var/opt/quest/vas/vasd(/.*)?
270            /var/lib/google-authenticator(/.*)?
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272       wtmp_t
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274            /var/log/wtmp.*
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FILE CONTEXTS

278       SELinux requires files to have an extended attribute to define the file
279       type.
280
281       You can see the context of a file using the -Z option to ls
282
283       Policy  governs  the  access  confined  processes  have to these files.
284       SELinux rshd policy is very flexible allowing users to setup their rshd
285       processes in as secure a method as possible.
286
287       STANDARD FILE CONTEXT
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289       SELinux  defines  the file context types for the rshd, if you wanted to
290       store files with these types in a diffent paths, you  need  to  execute
291       the  semanage  command  to  sepecify  alternate  labeling  and then use
292       restorecon to put the labels on disk.
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294       semanage fcontext -a -t rshd_keytab_t '/srv/myrshd_content(/.*)?'
295       restorecon -R -v /srv/myrshd_content
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297       Note: SELinux often uses regular expressions  to  specify  labels  that
298       match multiple files.
299
300       The following file types are defined for rshd:
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304       rshd_exec_t
305
306       -  Set  files  with  the rshd_exec_t type, if you want to transition an
307       executable to the rshd_t domain.
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309
310       Paths:
311            /usr/sbin/in.rshd, /usr/sbin/in.rexecd, /usr/kerberos/sbin/kshd
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314       rshd_keytab_t
315
316       - Set files with the rshd_keytab_t type, if you want to treat the files
317       as kerberos keytab files.
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321       Note:  File context can be temporarily modified with the chcon command.
322       If you want to permanently change the file context you need to use  the
323       semanage fcontext command.  This will modify the SELinux labeling data‐
324       base.  You will need to use restorecon to apply the labels.
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COMMANDS

328       semanage fcontext can also be used to manipulate default  file  context
329       mappings.
330
331       semanage  permissive  can  also  be used to manipulate whether or not a
332       process type is permissive.
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334       semanage module can also be used to enable/disable/install/remove  pol‐
335       icy modules.
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337       semanage port can also be used to manipulate the port definitions
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339       semanage boolean can also be used to manipulate the booleans
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341
342       system-config-selinux is a GUI tool available to customize SELinux pol‐
343       icy settings.
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AUTHOR

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