1postfix_postdrop_selinux(S8E)Linux Policy postfix_postdproosptfix_postdrop_selinux(8)
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6 postfix_postdrop_selinux - Security Enhanced Linux Policy for the post‐
7 fix_postdrop processes
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10 Security-Enhanced Linux secures the postfix_postdrop processes via
11 flexible mandatory access control.
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13 The postfix_postdrop processes execute with the postfix_postdrop_t
14 SELinux type. You can check if you have these processes running by exe‐
15 cuting the ps command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep postfix_postdrop_t
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24 The postfix_postdrop_t SELinux type can be entered via the post‐
25 fix_postdrop_exec_t file type.
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27 The default entrypoint paths for the postfix_postdrop_t domain are the
28 following:
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30 /usr/sbin/postdrop
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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 postfix_postdrop policy is very flexible allowing users to setup their
40 postfix_postdrop processes in as secure a method as possible.
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42 The following process types are defined for postfix_postdrop:
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44 postfix_postdrop_t
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46 Note: semanage permissive -a postfix_postdrop_t can be used to make the
47 process type postfix_postdrop_t permissive. SELinux does not deny ac‐
48 cess to permissive process types, but the AVC (SELinux denials) mes‐
49 sages are still generated.
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53 SELinux policy is customizable based on least access required. post‐
54 fix_postdrop policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_postdrop with the
56 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 system to run with NIS, you must turn on the
68 nis_enabled boolean. Disabled by default.
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70 setsebool -P nis_enabled 1
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75 The SELinux process type postfix_postdrop_t can manage files labeled
76 with the following file types. The paths listed are the default paths
77 for these file types. Note the processes UID still need to have DAC
78 permissions.
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80 arpwatch_tmp_t
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83 krb5_host_rcache_t
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85 /var/tmp/krb5_0.rcache2
86 /var/cache/krb5rcache(/.*)?
87 /var/tmp/nfs_0
88 /var/tmp/DNS_25
89 /var/tmp/host_0
90 /var/tmp/imap_0
91 /var/tmp/HTTP_23
92 /var/tmp/HTTP_48
93 /var/tmp/ldap_55
94 /var/tmp/ldap_487
95 /var/tmp/ldapmap1_0
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97 postfix_spool_t
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99 /var/spool/postfix.*
100 /var/spool/postfix/defer(/.*)?
101 /var/spool/postfix/flush(/.*)?
102 /var/spool/postfix/deferred(/.*)?
103 /var/spool/postfix/maildrop(/.*)?
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105 postfix_var_run_t
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107 /var/spool/postfix/pid/.*
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109 uucpd_spool_t
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111 /var/spool/uucp(/.*)?
112 /var/spool/uucppublic(/.*)?
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116 SELinux requires files to have an extended attribute to define the file
117 type.
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119 You can see the context of a file using the -Z option to ls
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121 Policy governs the access confined processes have to these files.
122 SELinux postfix_postdrop policy is very flexible allowing users to
123 setup their postfix_postdrop processes in as secure a method as possi‐
124 ble.
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126 STANDARD FILE CONTEXT
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128 SELinux defines the file context types for the postfix_postdrop, if you
129 wanted to store files with these types in a diffent paths, you need to
130 execute the semanage command to specify alternate labeling and then use
131 restorecon to put the labels on disk.
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133 semanage fcontext -a -t postfix_postdrop_t '/srv/mypostfix_post‐
134 drop_content(/.*)?'
135 restorecon -R -v /srv/mypostfix_postdrop_content
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137 Note: SELinux often uses regular expressions to specify labels that
138 match multiple files.
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140 The following file types are defined for postfix_postdrop:
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144 postfix_postdrop_exec_t
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146 - Set files with the postfix_postdrop_exec_t type, if you want to tran‐
147 sition an executable to the postfix_postdrop_t domain.
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151 postfix_postdrop_t
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153 - Set files with the postfix_postdrop_t type, if you want to treat the
154 files as postfix postdrop data.
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158 Note: File context can be temporarily modified with the chcon command.
159 If you want to permanently change the file context you need to use the
160 semanage fcontext command. This will modify the SELinux labeling data‐
161 base. You will need to use restorecon to apply the labels.
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165 semanage fcontext can also be used to manipulate default file context
166 mappings.
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168 semanage permissive can also be used to manipulate whether or not a
169 process type is permissive.
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171 semanage module can also be used to enable/disable/install/remove pol‐
172 icy modules.
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174 semanage boolean can also be used to manipulate the booleans
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177 system-config-selinux is a GUI tool available to customize SELinux pol‐
178 icy settings.
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182 This manual page was auto-generated using sepolicy manpage .
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186 selinux(8), postfix_postdrop(8), semanage(8), restorecon(8), chcon(1),
187 sepolicy(8), setsebool(8)
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191postfix_postdrop 23-02-03 postfix_postdrop_selinux(8)