1postfix_virtual_selinux(8S)ELinux Policy postfix_virtuaplostfix_virtual_selinux(8)
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NAME

6       postfix_virtual_selinux  - Security Enhanced Linux Policy for the post‐
7       fix_virtual processes
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DESCRIPTION

10       Security-Enhanced Linux secures the postfix_virtual processes via flex‐
11       ible mandatory access control.
12
13       The   postfix_virtual  processes  execute  with  the  postfix_virtual_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_virtual_t
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21
22

ENTRYPOINTS

24       The  postfix_virtual_t SELinux type can be entered via the postfix_vir‐
25       tual_exec_t file type.
26
27       The default entrypoint paths for the postfix_virtual_t domain  are  the
28       following:
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30       /usr/libexec/postfix/virtual
31

PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
35
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_virtual  policy  is very flexible allowing users to setup their
40       postfix_virtual processes in as secure a method as possible.
41
42       The following process types are defined for postfix_virtual:
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44       postfix_virtual_t
45
46       Note: semanage permissive -a postfix_virtual_t can be used to make  the
47       process type postfix_virtual_t permissive. SELinux does not deny access
48       to permissive process types, but the AVC (SELinux denials) messages are
49       still generated.
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51

BOOLEANS

53       SELinux  policy  is customizable based on least access required.  post‐
54       fix_virtual policy is extremely flexible and has several booleans  that
55       allow  you  to  manipulate  the policy and run postfix_virtual with the
56       tightest access possible.
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59
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.
63
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.
70
71       setsebool -P fips_mode 1
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73
74
75       If  you  want  to allow confined applications to run with kerberos, you
76       must turn on the kerberos_enabled boolean. Disabled by default.
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78       setsebool -P kerberos_enabled 1
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81
82       If you want to allow system to run with  NIS,  you  must  turn  on  the
83       nis_enabled boolean. Disabled by default.
84
85       setsebool -P nis_enabled 1
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87
88
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.
91
92       setsebool -P nscd_use_shm 1
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95

MANAGED FILES

97       The SELinux process type postfix_virtual_t  can  manage  files  labeled
98       with  the following file types.  The paths listed are the default paths
99       for these file types.  Note the processes UID still need  to  have  DAC
100       permissions.
101
102       anon_inodefs_t
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104
105       cifs_t
106
107
108       dovecot_spool_t
109
110            /var/spool/dovecot(/.*)?
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112       ecryptfs_t
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114            /home/[^/]+/.Private(/.*)?
115            /home/[^/]+/.ecryptfs(/.*)?
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117       fusefs_t
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119            /var/run/user/[^/]*/gvfs
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121       mail_home_rw_t
122
123            /root/Maildir(/.*)?
124            /root/.esmtp_queue(/.*)?
125            /var/lib/arpwatch/.esmtp_queue(/.*)?
126            /home/[^/]+/.maildir(/.*)?
127            /home/[^/]+/Maildir(/.*)?
128            /home/[^/]+/.esmtp_queue(/.*)?
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130       mail_spool_t
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132            /var/mail(/.*)?
133            /var/spool/imap(/.*)?
134            /var/spool/mail(/.*)?
135            /var/spool/smtpd(/.*)?
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137       nfs_t
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139
140       postfix_spool_t
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142            /var/spool/postfix.*
143            /var/spool/postfix/defer(/.*)?
144            /var/spool/postfix/flush(/.*)?
145            /var/spool/postfix/deferred(/.*)?
146            /var/spool/postfix/maildrop(/.*)?
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148       postfix_var_run_t
149
150            /var/spool/postfix/pid/.*
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152       postfix_virtual_tmp_t
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154
155       user_home_t
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157            /home/[^/]+/.+
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159       user_home_type
160
161            all user home files
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163

FILE CONTEXTS

165       SELinux requires files to have an extended attribute to define the file
166       type.
167
168       You can see the context of a file using the -Z option to ls
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170       Policy governs the access  confined  processes  have  to  these  files.
171       SELinux postfix_virtual policy is very flexible allowing users to setup
172       their postfix_virtual processes in as secure a method as possible.
173
174       STANDARD FILE CONTEXT
175
176       SELinux defines the file context types for the postfix_virtual, if  you
177       wanted  to store files with these types in a diffent paths, you need to
178       execute the semanage command to sepecify alternate  labeling  and  then
179       use restorecon to put the labels on disk.
180
181       semanage  fcontext  -a  -t  postfix_virtual_tmp_t  '/srv/mypostfix_vir‐
182       tual_content(/.*)?'
183       restorecon -R -v /srv/mypostfix_virtual_content
184
185       Note: SELinux often uses regular expressions  to  specify  labels  that
186       match multiple files.
187
188       The following file types are defined for postfix_virtual:
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190
191
192       postfix_virtual_exec_t
193
194       -  Set files with the postfix_virtual_exec_t type, if you want to tran‐
195       sition an executable to the postfix_virtual_t domain.
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197
198
199       postfix_virtual_tmp_t
200
201       - Set files with the postfix_virtual_tmp_t type, if you want  to  store
202       postfix virtual temporary files in the /tmp directories.
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205
206       Note:  File context can be temporarily modified with the chcon command.
207       If you want to permanently change the file context you need to use  the
208       semanage fcontext command.  This will modify the SELinux labeling data‐
209       base.  You will need to use restorecon to apply the labels.
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211

COMMANDS

213       semanage fcontext can also be used to manipulate default  file  context
214       mappings.
215
216       semanage  permissive  can  also  be used to manipulate whether or not a
217       process type is permissive.
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219       semanage module can also be used to enable/disable/install/remove  pol‐
220       icy modules.
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222       semanage boolean can also be used to manipulate the booleans
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224
225       system-config-selinux is a GUI tool available to customize SELinux pol‐
226       icy settings.
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228

AUTHOR

230       This manual page was auto-generated using sepolicy manpage .
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232

SEE ALSO

234       selinux(8), postfix_virtual(8), semanage(8),  restorecon(8),  chcon(1),
235       sepolicy(8), setsebool(8)
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239postfix_virtual                    19-12-02         postfix_virtual_selinux(8)
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