1postfix_virtual_selinux(8S)ELinux Policy postfix_virtuaplostfix_virtual_selinux(8)
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6 postfix_virtual_selinux - Security Enhanced Linux Policy for the post‐
7 fix_virtual processes
8
10 Security-Enhanced Linux secures the postfix_virtual processes via flex‐
11 ible mandatory access control.
12 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.
16 For example:
18 ps -eZ | grep postfix_virtual_t
20
24 The postfix_virtual_t SELinux type can be entered via the postfix_vir‐
25 tual_exec_t file type.
26 The default entrypoint paths for the postfix_virtual_t domain are the
28 following:
29 /usr/libexec/postfix/virtual
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 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 The following process types are defined for postfix_virtual:
43 postfix_virtual_t
45 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.
50
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.
57 If you want to allow all domains to execute in fips_mode, you must turn
61 on the fips_mode boolean. Enabled by default.
62 setsebool -P fips_mode 1
64 If you want to allow system to run with NIS, you must turn on the
68 nis_enabled boolean. Disabled by default.
69 setsebool -P nis_enabled 1
71
75 The SELinux process type postfix_virtual_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.
79 anon_inodefs_t
81 cifs_t
84 dovecot_spool_t
87 /var/spool/dovecot(/.*)?
89 ecryptfs_t
91 /home/[^/]+/.Private(/.*)?
93 /home/[^/]+/.ecryptfs(/.*)?
94 fusefs_t
96 /var/run/user/[^/]*/gvfs
98 mail_home_rw_t
100 /root/Maildir(/.*)?
102 /root/.esmtp_queue(/.*)?
103 /var/lib/arpwatch/.esmtp_queue(/.*)?
104 /home/[^/]+/.maildir(/.*)?
105 /home/[^/]+/Maildir(/.*)?
106 /home/[^/]+/.esmtp_queue(/.*)?
107 nfs_t
109 postfix_spool_t
112 /var/spool/postfix.*
114 /var/spool/postfix/defer(/.*)?
115 /var/spool/postfix/flush(/.*)?
116 /var/spool/postfix/deferred(/.*)?
117 /var/spool/postfix/maildrop(/.*)?
118 postfix_var_run_t
120 /var/spool/postfix/pid/.*
122 user_home_t
124 /home/[^/]+/.+
126 user_home_type
128 all user home files
130
133 SELinux requires files to have an extended attribute to define the file
134 type.
135 You can see the context of a file using the -Z option to ls
137 Policy governs the access confined processes have to these files.
139 SELinux postfix_virtual policy is very flexible allowing users to setup
140 their postfix_virtual processes in as secure a method as possible.
141 STANDARD FILE CONTEXT
143 SELinux defines the file context types for the postfix_virtual, if you
145 wanted to store files with these types in a diffent paths, you need to
146 execute the semanage command to sepecify alternate labeling and then
147 use restorecon to put the labels on disk.
148 semanage fcontext -a -t postfix_virtual_tmp_t '/srv/mypostfix_vir‐
150 tual_content(/.*)?'
151 restorecon -R -v /srv/mypostfix_virtual_content
152 Note: SELinux often uses regular expressions to specify labels that
154 match multiple files.
155 The following file types are defined for postfix_virtual:
157 postfix_virtual_exec_t
161 - Set files with the postfix_virtual_exec_t type, if you want to tran‐
163 sition an executable to the postfix_virtual_t domain.
164 postfix_virtual_tmp_t
168 - Set files with the postfix_virtual_tmp_t type, if you want to store
170 postfix virtual temporary files in the /tmp directories.
171 Note: File context can be temporarily modified with the chcon command.
175 If you want to permanently change the file context you need to use the
176 semanage fcontext command. This will modify the SELinux labeling data‐
177 base. You will need to use restorecon to apply the labels.
178
181 semanage fcontext can also be used to manipulate default file context
182 mappings.
183 semanage permissive can also be used to manipulate whether or not a
185 process type is permissive.
186 semanage module can also be used to enable/disable/install/remove pol‐
188 icy modules.
189 semanage boolean can also be used to manipulate the booleans
191 system-config-selinux is a GUI tool available to customize SELinux pol‐
194 icy settings.
195
198 This manual page was auto-generated using sepolicy manpage .
199
202 selinux(8), postfix_virtual(8), semanage(8), restorecon(8), chcon(1),
203 sepolicy(8), setsebool(8)
204postfix_virtual 20-05-05 postfix_virtual_selinux(8)