1postfix_map_selinux(8) SELinux Policy postfix_map postfix_map_selinux(8)
2
6 postfix_map_selinux - Security Enhanced Linux Policy for the post‐
7 fix_map processes
8
10 Security-Enhanced Linux secures the postfix_map processes via flexible
11 mandatory access control.
12 The postfix_map processes execute with the postfix_map_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16 For example:
18 ps -eZ | grep postfix_map_t
20
24 The postfix_map_t SELinux type can be entered via the post‐
25 fix_map_exec_t file type.
26 The default entrypoint paths for the postfix_map_t domain are the fol‐
28 lowing:
29 /usr/sbin/postmap
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_map policy is very flexible allowing users to setup their post‐
40 fix_map processes in as secure a method as possible.
41 The following process types are defined for postfix_map:
43 postfix_map_t
45 Note: semanage permissive -a postfix_map_t can be used to make the
47 process type postfix_map_t permissive. SELinux does not deny access to
48 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_map policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_map with the tight‐
56 est access possible.
57 If you want to allow all domains to use other domains file descriptors,
61 you must turn on the allow_domain_fd_use boolean. Enabled by default.
62 setsebool -P allow_domain_fd_use 1
64 If you want to allow confined applications to run with kerberos, you
68 must turn on the allow_kerberos boolean. Enabled by default.
69 setsebool -P allow_kerberos 1
71 If you want to allow sysadm to debug or ptrace all processes, you must
75 turn on the allow_ptrace boolean. Disabled by default.
76 setsebool -P allow_ptrace 1
78 If you want to allow system to run with NIS, you must turn on the
82 allow_ypbind boolean. Disabled by default.
83 setsebool -P allow_ypbind 1
85 If you want to allow all domains to have the kernel load modules, you
89 must turn on the domain_kernel_load_modules boolean. Disabled by
90 default.
91 setsebool -P domain_kernel_load_modules 1
93 If you want to allow all domains to execute in fips_mode, you must turn
97 on the fips_mode boolean. Enabled by default.
98 setsebool -P fips_mode 1
100 If you want to enable reading of urandom for all domains, you must turn
104 on the global_ssp boolean. Disabled by default.
105 setsebool -P global_ssp 1
107 If you want to allow confined applications to use nscd shared memory,
111 you must turn on the nscd_use_shm boolean. Enabled by default.
112 setsebool -P nscd_use_shm 1
114
118 The SELinux process type postfix_map_t can manage files labeled with
119 the following file types. The paths listed are the default paths for
120 these file types. Note the processes UID still need to have DAC per‐
121 missions.
122 initrc_tmp_t
124 mailman_data_t
127 /etc/mailman(/.*)?
129 /var/lib/mailman(/.*)?
130 /var/spool/mailman(/.*)?
131 mnt_t
133 /mnt(/[^/]*)
135 /mnt(/[^/]*)?
136 /rhev(/[^/]*)?
137 /media(/[^/]*)
138 /media(/[^/]*)?
139 /etc/rhgb(/.*)?
140 /media/.hal-.*
141 /net
142 /afs
143 /rhev
144 /misc
145 postfix_etc_t
147 /etc/postfix.*
149 postfix_map_tmp_t
151 tmp_t
154 /tmp
156 /usr/tmp
157 /var/tmp
158 /tmp-inst
159 /var/tmp-inst
160 /var/tmp/vi.recover
161
164 SELinux requires files to have an extended attribute to define the file
165 type.
166 You can see the context of a file using the -Z option to ls
168 Policy governs the access confined processes have to these files.
170 SELinux postfix_map policy is very flexible allowing users to setup
171 their postfix_map processes in as secure a method as possible.
172 STANDARD FILE CONTEXT
174 SELinux defines the file context types for the postfix_map, if you
176 wanted to store files with these types in a diffent paths, you need to
177 execute the semanage command to sepecify alternate labeling and then
178 use restorecon to put the labels on disk.
179 semanage fcontext -a -t postfix_map_tmp_t '/srv/mypostfix_map_con‐
181 tent(/.*)?'
182 restorecon -R -v /srv/mypostfix_map_content
183 Note: SELinux often uses regular expressions to specify labels that
185 match multiple files.
186 The following file types are defined for postfix_map:
188 postfix_map_exec_t
192 - Set files with the postfix_map_exec_t type, if you want to transition
194 an executable to the postfix_map_t domain.
195 postfix_map_tmp_t
199 - Set files with the postfix_map_tmp_t type, if you want to store post‐
201 fix map temporary files in the /tmp directories.
202 Note: File context can be temporarily modified with the chcon command.
206 If you want to permanently change the file context you need to use the
207 semanage fcontext command. This will modify the SELinux labeling data‐
208 base. You will need to use restorecon to apply the labels.
209
212 semanage fcontext can also be used to manipulate default file context
213 mappings.
214 semanage permissive can also be used to manipulate whether or not a
216 process type is permissive.
217 semanage module can also be used to enable/disable/install/remove pol‐
219 icy modules.
220 semanage boolean can also be used to manipulate the booleans
222 system-config-selinux is a GUI tool available to customize SELinux pol‐
225 icy settings.
226
229 This manual page was auto-generated using sepolicy manpage .
230
233 selinux(8), postfix_map(8), semanage(8), restorecon(8), chcon(1) , set‐
234 sebool(8)
235postfix_map 15-06-03 postfix_map_selinux(8)