1postfix_postdrop_selinux(S8E)Linux Policy postfix_postdproosptfix_postdrop_selinux(8)
2
6 postfix_postdrop_selinux - Security Enhanced Linux Policy for the post‐
7 fix_postdrop processes
8
10 Security-Enhanced Linux secures the postfix_postdrop processes via
11 flexible mandatory access control.
12 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.
16 For example:
18 ps -eZ | grep postfix_postdrop_t
20
24 The postfix_postdrop_t SELinux type can be entered via the post‐
25 fix_postdrop_exec_t file type.
26 The default entrypoint paths for the postfix_postdrop_t domain are the
28 following:
29 /usr/sbin/postdrop
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_postdrop policy is very flexible allowing users to setup their
40 postfix_postdrop processes in as secure a method as possible.
41 The following process types are defined for postfix_postdrop:
43 postfix_postdrop_t
45 Note: semanage permissive -a postfix_postdrop_t can be used to make the
47 process type postfix_postdrop_t permissive. SELinux does not deny
48 access to permissive process types, but the AVC (SELinux denials) mes‐
49 sages are still generated.
50
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.
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 http daemon to send mail, you must turn on the
111 httpd_can_sendmail boolean. Disabled by default.
112 setsebool -P httpd_can_sendmail 1
114 If you want to allow confined applications to use nscd shared memory,
118 you must turn on the nscd_use_shm boolean. Enabled by default.
119 setsebool -P nscd_use_shm 1
121
125 The SELinux process type postfix_postdrop_t can manage files labeled
126 with the following file types. The paths listed are the default paths
127 for these file types. Note the processes UID still need to have DAC
128 permissions.
129 anon_inodefs_t
131 arpwatch_tmp_t
134 initrc_tmp_t
137 mnt_t
140 /mnt(/[^/]*)
142 /mnt(/[^/]*)?
143 /rhev(/[^/]*)?
144 /media(/[^/]*)
145 /media(/[^/]*)?
146 /etc/rhgb(/.*)?
147 /media/.hal-.*
148 /net
149 /afs
150 /rhev
151 /misc
152 postfix_spool_maildrop_t
154 /var/spool/postfix/defer(/.*)?
156 /var/spool/postfix/deferred(/.*)?
157 /var/spool/postfix/maildrop(/.*)?
158 postfix_var_run_t
160 /var/spool/postfix/pid/.*
162 tmp_t
164 /tmp
166 /usr/tmp
167 /var/tmp
168 /tmp-inst
169 /var/tmp-inst
170 /var/tmp/vi.recover
171 uucpd_spool_t
173 /var/spool/uucp(/.*)?
175 /var/spool/uucppublic(/.*)?
176
179 SELinux requires files to have an extended attribute to define the file
180 type.
181 You can see the context of a file using the -Z option to ls
183 Policy governs the access confined processes have to these files.
185 SELinux postfix_postdrop policy is very flexible allowing users to set‐
186 up their postfix_postdrop processes in as secure a method as possible.
187 The following file types are defined for postfix_postdrop:
189 postfix_postdrop_exec_t
193 - Set files with the postfix_postdrop_exec_t type, if you want to tran‐
195 sition an executable to the postfix_postdrop_t domain.
196 Note: File context can be temporarily modified with the chcon command.
200 If you want to permanently change the file context you need to use the
201 semanage fcontext command. This will modify the SELinux labeling data‐
202 base. You will need to use restorecon to apply the labels.
203
206 semanage fcontext can also be used to manipulate default file context
207 mappings.
208 semanage permissive can also be used to manipulate whether or not a
210 process type is permissive.
211 semanage module can also be used to enable/disable/install/remove pol‐
213 icy modules.
214 semanage boolean can also be used to manipulate the booleans
216 system-config-selinux is a GUI tool available to customize SELinux pol‐
219 icy settings.
220
223 This manual page was auto-generated using sepolicy manpage .
224
227 selinux(8), postfix_postdrop(8), semanage(8), restorecon(8), chcon(1) ,
228 setsebool(8)
229postfix_postdrop 15-06-03 postfix_postdrop_selinux(8)