krb5kdc_selinux(8)

1krb5kdc_selinux(8)          SELinux Policy krb5kdc          krb5kdc_selinux(8)
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NAME

6       krb5kdc_selinux  -  Security Enhanced Linux Policy for the krb5kdc pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux secures  the  krb5kdc  processes  via  flexible
11       mandatory access control.
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13       The  krb5kdc processes execute with the krb5kdc_t SELinux type. You can
14       check if you have these processes running by executing the  ps  command
15       with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep krb5kdc_t
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ENTRYPOINTS

24       The  krb5kdc_t  SELinux type can be entered via the krb5kdc_exec_t file
25       type.
26
27       The default entrypoint paths for the krb5kdc_t domain are  the  follow‐
28       ing:
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30       /usr/(kerberos/)?sbin/krb5kdc
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PROCESS TYPES

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       krb5kdc  policy  is very flexible allowing users to setup their krb5kdc
40       processes in as secure a method as possible.
41
42       The following process types are defined for krb5kdc:
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44       krb5kdc_t
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46       Note: semanage permissive -a krb5kdc_t can be used to make the  process
47       type  krb5kdc_t  permissive. SELinux does not deny access to permissive
48       process types, but the AVC (SELinux denials) messages are still  gener‐
49       ated.
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BOOLEANS

53       SELinux policy is customizable based on least access required.  krb5kdc
54       policy is extremely flexible and has several booleans that allow you to
55       manipulate  the  policy and run krb5kdc with the tightest access possi‐
56       ble.
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60       If you want to allow users to resolve user passwd entries directly from
61       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
62       gin_nsswitch_use_ldap boolean. Disabled by default.
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64       setsebool -P authlogin_nsswitch_use_ldap 1
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68       If you want to allow all domains to execute in fips_mode, you must turn
69       on the fips_mode boolean. Enabled by default.
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71       setsebool -P fips_mode 1
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75       If  you  want  to allow confined applications to run with kerberos, you
76       must turn on the kerberos_enabled boolean. Enabled by default.
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78       setsebool -P kerberos_enabled 1
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82       If you want to allow system to run with  NIS,  you  must  turn  on  the
83       nis_enabled boolean. Disabled by default.
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85       setsebool -P nis_enabled 1
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89       If  you  want to allow confined applications to use nscd shared memory,
90       you must turn on the nscd_use_shm boolean. Disabled by default.
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92       setsebool -P nscd_use_shm 1
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MANAGED FILES

97       The SELinux process type krb5kdc_t can manage files  labeled  with  the
98       following file types.  The paths listed are the default paths for these
99       file types.  Note the processes UID still need to have DAC permissions.
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101       anon_inodefs_t
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104       cluster_conf_t
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106            /etc/cluster(/.*)?
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108       cluster_var_lib_t
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110            /var/lib/pcsd(/.*)?
111            /var/lib/cluster(/.*)?
112            /var/lib/openais(/.*)?
113            /var/lib/pengine(/.*)?
114            /var/lib/corosync(/.*)?
115            /usr/lib/heartbeat(/.*)?
116            /var/lib/heartbeat(/.*)?
117            /var/lib/pacemaker(/.*)?
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119       cluster_var_run_t
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121            /var/run/crm(/.*)?
122            /var/run/cman_.*
123            /var/run/rsctmp(/.*)?
124            /var/run/aisexec.*
125            /var/run/heartbeat(/.*)?
126            /var/run/corosync-qnetd(/.*)?
127            /var/run/corosync-qdevice(/.*)?
128            /var/run/corosync.pid
129            /var/run/cpglockd.pid
130            /var/run/rgmanager.pid
131            /var/run/cluster/rgmanager.sk
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133       krb5kdc_lock_t
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135            /var/kerberos/krb5kdc/principal.*.ok
136            /var/kerberos/krb5kdc/from_master.*
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138       krb5kdc_log_t
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140            /var/log/krb5kdc.log.*
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142       krb5kdc_principal_t
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144            /etc/krb5kdc/principal.*
145            /usr/var/krb5kdc/principal.*
146            /var/kerberos/krb5kdc/principal.*
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148       krb5kdc_tmp_t
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151       krb5kdc_var_lib_t
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153            /var/lib/kdcproxy(/.*)?
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155       krb5kdc_var_run_t
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157            /var/run/krb5kdc(/.*)?
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159       root_t
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161            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
162            /
163            /initrd
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165       security_t
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167            /selinux
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FILE CONTEXTS

171       SELinux requires files to have an extended attribute to define the file
172       type.
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174       You can see the context of a file using the -Z option to ls
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176       Policy  governs  the  access  confined  processes  have to these files.
177       SELinux krb5kdc policy is very flexible allowing users to  setup  their
178       krb5kdc processes in as secure a method as possible.
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180       EQUIVALENCE DIRECTORIES
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183       krb5kdc  policy  stores data with multiple different file context types
184       under the /var/kerberos/krb5kdc directory.  If you would like to  store
185       the  data  in a different directory you can use the semanage command to
186       create an equivalence mapping.  If you wanted to store this data  under
187       the /srv dirctory you would execute the following command:
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189       semanage fcontext -a -e /var/kerberos/krb5kdc /srv/krb5kdc
190       restorecon -R -v /srv/krb5kdc
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192       STANDARD FILE CONTEXT
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194       SELinux  defines  the file context types for the krb5kdc, if you wanted
195       to store files with these types in a diffent paths, you need to execute
196       the  semanage  command  to  sepecify  alternate  labeling  and then use
197       restorecon to put the labels on disk.
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199       semanage  fcontext   -a   -t   krb5kdc_var_run_t   '/srv/mykrb5kdc_con‐
200       tent(/.*)?'
201       restorecon -R -v /srv/mykrb5kdc_content
202
203       Note:  SELinux  often  uses  regular expressions to specify labels that
204       match multiple files.
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206       The following file types are defined for krb5kdc:
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209
210       krb5kdc_conf_t
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212       - Set files with the krb5kdc_conf_t type, if  you  want  to  treat  the
213       files  as  krb5kdc  configuration  data,  usually stored under the /etc
214       directory.
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217       Paths:
218            /etc/krb5kdc(/.*)?,       /usr/var/krb5kdc(/.*)?,        /var/ker‐
219            beros/krb5kdc(/.*)?
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222       krb5kdc_exec_t
223
224       -  Set files with the krb5kdc_exec_t type, if you want to transition an
225       executable to the krb5kdc_t domain.
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229       krb5kdc_lock_t
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231       - Set files with the krb5kdc_lock_t type, if  you  want  to  treat  the
232       files as krb5kdc lock data, stored under the /var/lock directory
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235       Paths:
236            /var/kerberos/krb5kdc/principal.*.ok,                    /var/ker‐
237            beros/krb5kdc/from_master.*
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240       krb5kdc_log_t
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242       - Set files with the krb5kdc_log_t type, if you want to treat the  data
243       as krb5kdc log data, usually stored under the /var/log directory.
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247       krb5kdc_principal_t
248
249       - Set files with the krb5kdc_principal_t type, if you want to treat the
250       files as krb5kdc principal data.
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253       Paths:
254            /etc/krb5kdc/principal.*, /usr/var/krb5kdc/principal.*,  /var/ker‐
255            beros/krb5kdc/principal.*
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257
258       krb5kdc_tmp_t
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260       -  Set  files with the krb5kdc_tmp_t type, if you want to store krb5kdc
261       temporary files in the /tmp directories.
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265       krb5kdc_var_lib_t
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267       - Set files with the krb5kdc_var_lib_t type, if you want to  store  the
268       krb5kdc files under the /var/lib directory.
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272       krb5kdc_var_run_t
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274       -  Set  files with the krb5kdc_var_run_t type, if you want to store the
275       krb5kdc files under the /run or /var/run directory.
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278
279       Note: File context can be temporarily modified with the chcon  command.
280       If  you want to permanently change the file context you need to use the
281       semanage fcontext command.  This will modify the SELinux labeling data‐
282       base.  You will need to use restorecon to apply the labels.
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COMMANDS

286       semanage  fcontext  can also be used to manipulate default file context
287       mappings.
288
289       semanage permissive can also be used to manipulate  whether  or  not  a
290       process type is permissive.
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292       semanage  module can also be used to enable/disable/install/remove pol‐
293       icy modules.
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295       semanage boolean can also be used to manipulate the booleans
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297
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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