1postfix_bounce_selinux(8)SELinux Policy postfix_bouncepostfix_bounce_selinux(8)
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6 postfix_bounce_selinux - Security Enhanced Linux Policy for the post‐
7 fix_bounce processes
8
10 Security-Enhanced Linux secures the postfix_bounce processes via flexi‐
11 ble mandatory access control.
12 The postfix_bounce processes execute with the postfix_bounce_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep postfix_bounce_t
20
24 The postfix_bounce_t SELinux type can be entered via the post‐
25 fix_bounce_exec_t file type.
26 The default entrypoint paths for the postfix_bounce_t domain are the
28 following:
29 /usr/libexec/postfix/bounce
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_bounce policy is very flexible allowing users to setup their
40 postfix_bounce processes in as secure a method as possible.
41 The following process types are defined for postfix_bounce:
43 postfix_bounce_t
45 Note: semanage permissive -a postfix_bounce_t can be used to make the
47 process type postfix_bounce_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_bounce policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_bounce with the
56 tightest 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_bounce_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 anon_inodefs_t
124 initrc_tmp_t
127 mnt_t
130 /mnt(/[^/]*)
132 /mnt(/[^/]*)?
133 /rhev(/[^/]*)?
134 /media(/[^/]*)
135 /media(/[^/]*)?
136 /etc/rhgb(/.*)?
137 /media/.hal-.*
138 /net
139 /afs
140 /rhev
141 /misc
142 postfix_bounce_tmp_t
144 postfix_spool_bounce_t
147 /var/spool/postfix/bounce(/.*)?
149 postfix_spool_maildrop_t
151 /var/spool/postfix/defer(/.*)?
153 /var/spool/postfix/deferred(/.*)?
154 /var/spool/postfix/maildrop(/.*)?
155 postfix_spool_t
157 /var/spool/postfix.*
159 postfix_var_run_t
161 /var/spool/postfix/pid/.*
163 tmp_t
165 /tmp
167 /usr/tmp
168 /var/tmp
169 /tmp-inst
170 /var/tmp-inst
171 /var/tmp/vi.recover
172
175 SELinux requires files to have an extended attribute to define the file
176 type.
177 You can see the context of a file using the -Z option to ls
179 Policy governs the access confined processes have to these files.
181 SELinux postfix_bounce policy is very flexible allowing users to setup
182 their postfix_bounce processes in as secure a method as possible.
183 STANDARD FILE CONTEXT
185 SELinux defines the file context types for the postfix_bounce, if you
187 wanted to store files with these types in a diffent paths, you need to
188 execute the semanage command to sepecify alternate labeling and then
189 use restorecon to put the labels on disk.
190 semanage fcontext -a -t postfix_bounce_tmp_t '/srv/mypost‐
192 fix_bounce_content(/.*)?'
193 restorecon -R -v /srv/mypostfix_bounce_content
194 Note: SELinux often uses regular expressions to specify labels that
196 match multiple files.
197 The following file types are defined for postfix_bounce:
199 postfix_bounce_exec_t
203 - Set files with the postfix_bounce_exec_t type, if you want to transi‐
205 tion an executable to the postfix_bounce_t domain.
206 postfix_bounce_tmp_t
210 - Set files with the postfix_bounce_tmp_t type, if you want to store
212 postfix bounce temporary files in the /tmp directories.
213 Note: File context can be temporarily modified with the chcon command.
217 If you want to permanently change the file context you need to use the
218 semanage fcontext command. This will modify the SELinux labeling data‐
219 base. You will need to use restorecon to apply the labels.
220
223 semanage fcontext can also be used to manipulate default file context
224 mappings.
225 semanage permissive can also be used to manipulate whether or not a
227 process type is permissive.
228 semanage module can also be used to enable/disable/install/remove pol‐
230 icy modules.
231 semanage boolean can also be used to manipulate the booleans
233 system-config-selinux is a GUI tool available to customize SELinux pol‐
236 icy settings.
237
240 This manual page was auto-generated using sepolicy manpage .
241
244 selinux(8), postfix_bounce(8), semanage(8), restorecon(8), chcon(1) ,
245 setsebool(8)
246postfix_bounce 15-06-03 postfix_bounce_selinux(8)