chkpwd_selinux(8)

1chkpwd_selinux(8)            SELinux Policy chkpwd           chkpwd_selinux(8)
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NAME

6       chkpwd_selinux  -  Security  Enhanced  Linux Policy for the chkpwd pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux  secures  the  chkpwd  processes  via  flexible
11       mandatory access control.
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13       The  chkpwd  processes  execute with the chkpwd_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 chkpwd_t
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ENTRYPOINTS

24       The  chkpwd_t  SELinux  type  can be entered via the chkpwd_exec_t file
25       type.
26
27       The default entrypoint paths for the chkpwd_t domain are the following:
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29       /sbin/unix_chkpwd,        /sbin/unix_verify,        /usr/sbin/validate,
30       /usr/sbin/unix_chkpwd,                           /usr/sbin/unix_verify,
31       /usr/libexec/chkpwd/tcb_chkpwd
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PROCESS TYPES

34       SELinux defines process types (domains) for each process running on the
35       system
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37       You can see the context of a process using the -Z option to ps
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39       Policy  governs  the  access confined processes have to files.  SELinux
40       chkpwd policy is very flexible allowing users  to  setup  their  chkpwd
41       processes in as secure a method as possible.
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43       The following process types are defined for chkpwd:
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45       chkpwd_t
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47       Note:  semanage  permissive -a chkpwd_t can be used to make the process
48       type chkpwd_t permissive. SELinux does not deny  access  to  permissive
49       process  types, but the AVC (SELinux denials) messages are still gener‐
50       ated.
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BOOLEANS

54       SELinux policy is customizable based on least access required.   chkpwd
55       policy is extremely flexible and has several booleans that allow you to
56       manipulate the policy and run chkpwd with the tightest access possible.
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60       If you want to allow all domains to execute in fips_mode, you must turn
61       on the fips_mode boolean. Enabled by default.
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63       setsebool -P fips_mode 1
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67       If  you  want to allow Apache to use mod_auth_pam, you must turn on the
68       httpd_mod_auth_pam boolean. Disabled by default.
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70       setsebool -P httpd_mod_auth_pam 1
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74       If you want to allow nagios/nrpe to call sudo from NRPE utils  scripts,
75       you must turn on the nagios_run_sudo boolean. Disabled by default.
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77       setsebool -P nagios_run_sudo 1
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81       If  you  want  to  allow  system  to run with NIS, you must turn on the
82       nis_enabled boolean. Disabled by default.
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84       setsebool -P nis_enabled 1
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MANAGED FILES

89       The SELinux process type chkpwd_t can manage  files  labeled  with  the
90       following file types.  The paths listed are the default paths for these
91       file types.  Note the processes UID still need to have DAC permissions.
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93       krb5_host_rcache_t
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95            /var/tmp/krb5_0.rcache2
96            /var/cache/krb5rcache(/.*)?
97            /var/tmp/nfs_0
98            /var/tmp/DNS_25
99            /var/tmp/host_0
100            /var/tmp/imap_0
101            /var/tmp/HTTP_23
102            /var/tmp/HTTP_48
103            /var/tmp/ldap_55
104            /var/tmp/ldap_487
105            /var/tmp/ldapmap1_0
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FILE CONTEXTS

109       SELinux requires files to have an extended attribute to define the file
110       type.
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112       You can see the context of a file using the -Z option to ls
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114       Policy  governs  the  access  confined  processes  have to these files.
115       SELinux chkpwd policy is very flexible allowing users  to  setup  their
116       chkpwd processes in as secure a method as possible.
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118       STANDARD FILE CONTEXT
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120       SELinux defines the file context types for the chkpwd, if you wanted to
121       store files with these types in a different paths, you need to  execute
122       the  semanage  command  to  specify alternate labeling and then use re‐
123       storecon to put the labels on disk.
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125       semanage fcontext -a -t chkpwd_exec_t '/srv/chkpwd/content(/.*)?'
126       restorecon -R -v /srv/mychkpwd_content
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128       Note: SELinux often uses regular expressions  to  specify  labels  that
129       match multiple files.
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131       The following file types are defined for chkpwd:
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135       chkpwd_exec_t
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137       -  Set  files with the chkpwd_exec_t type, if you want to transition an
138       executable to the chkpwd_t domain.
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141       Paths:
142            /sbin/unix_chkpwd,     /sbin/unix_verify,      /usr/sbin/validate,
143            /usr/sbin/unix_chkpwd,                      /usr/sbin/unix_verify,
144            /usr/libexec/chkpwd/tcb_chkpwd
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147       Note: File context can be temporarily modified with the chcon  command.
148       If  you want to permanently change the file context you need to use the
149       semanage fcontext command.  This will modify the SELinux labeling data‐
150       base.  You will need to use restorecon to apply the labels.
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COMMANDS

154       semanage  fcontext  can also be used to manipulate default file context
155       mappings.
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157       semanage permissive can also be used to manipulate  whether  or  not  a
158       process type is permissive.
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160       semanage  module can also be used to enable/disable/install/remove pol‐
161       icy modules.
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163       semanage boolean can also be used to manipulate the booleans
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166       system-config-selinux is a GUI tool available to customize SELinux pol‐
167       icy settings.
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AUTHOR

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