1chkpwd_selinux(8) SELinux Policy chkpwd chkpwd_selinux(8)
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6 chkpwd_selinux - Security Enhanced Linux Policy for the chkpwd pro‐
7 cesses
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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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24 The chkpwd_t SELinux type can be entered via the chkpwd_exec_t file
25 type.
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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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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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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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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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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 The following file types are defined for chkpwd:
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122 chkpwd_exec_t
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124 - Set files with the chkpwd_exec_t type, if you want to transition an
125 executable to the chkpwd_t domain.
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128 Paths:
129 /sbin/unix_chkpwd, /sbin/unix_verify, /usr/sbin/validate,
130 /usr/sbin/unix_chkpwd, /usr/sbin/unix_verify,
131 /usr/libexec/chkpwd/tcb_chkpwd
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134 Note: File context can be temporarily modified with the chcon command.
135 If you want to permanently change the file context you need to use the
136 semanage fcontext command. This will modify the SELinux labeling data‐
137 base. You will need to use restorecon to apply the labels.
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141 semanage fcontext can also be used to manipulate default file context
142 mappings.
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144 semanage permissive can also be used to manipulate whether or not a
145 process type is permissive.
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147 semanage module can also be used to enable/disable/install/remove pol‐
148 icy modules.
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150 semanage boolean can also be used to manipulate the booleans
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153 system-config-selinux is a GUI tool available to customize SELinux pol‐
154 icy settings.
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158 This manual page was auto-generated using sepolicy manpage .
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162 selinux(8), chkpwd(8), semanage(8), restorecon(8), chcon(1), sepol‐
163 icy(8), setsebool(8)
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167chkpwd 22-05-27 chkpwd_selinux(8)