1postfix_master_selinux(8)SELinux Policy postfix_masterpostfix_master_selinux(8)
2
6 postfix_master_selinux - Security Enhanced Linux Policy for the post‐
7 fix_master processes
8
10 Security-Enhanced Linux secures the postfix_master processes via flexi‐
11 ble mandatory access control.
12 The postfix_master processes execute with the postfix_master_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_master_t
20
24 The postfix_master_t SELinux type can be entered via the postfix_mas‐
25 ter_exec_t file type.
26 The default entrypoint paths for the postfix_master_t domain are the
28 following:
29 /usr/sbin/postcat, /usr/sbin/postfix, /usr/sbin/postlog,
31 /usr/sbin/postkick, /usr/sbin/postlock, /usr/sbin/postalias,
32 /usr/sbin/postsuper, /usr/libexec/postfix/master
33
35 SELinux defines process types (domains) for each process running on the
36 system
37 You can see the context of a process using the -Z option to ps
39 Policy governs the access confined processes have to files. SELinux
41 postfix_master policy is very flexible allowing users to setup their
42 postfix_master processes in as secure a method as possible.
43 The following process types are defined for postfix_master:
45 postfix_master_t
47 Note: semanage permissive -a postfix_master_t can be used to make the
49 process type postfix_master_t permissive. SELinux does not deny access
50 to permissive process types, but the AVC (SELinux denials) messages are
51 still generated.
52
55 SELinux policy is customizable based on least access required. post‐
56 fix_master policy is extremely flexible and has several booleans that
57 allow you to manipulate the policy and run postfix_master with the
58 tightest access possible.
59 If you want to allow all domains to execute in fips_mode, you must turn
63 on the fips_mode boolean. Enabled by default.
64 setsebool -P fips_mode 1
66
70 The SELinux process type postfix_master_t can manage files labeled with
71 the following file types. The paths listed are the default paths for
72 these file types. Note the processes UID still need to have DAC per‐
73 missions.
74 cluster_conf_t
76 /etc/cluster(/.*)?
78 cluster_var_lib_t
80 /var/lib/pcsd(/.*)?
82 /var/lib/cluster(/.*)?
83 /var/lib/openais(/.*)?
84 /var/lib/pengine(/.*)?
85 /var/lib/corosync(/.*)?
86 /usr/lib/heartbeat(/.*)?
87 /var/lib/heartbeat(/.*)?
88 /var/lib/pacemaker(/.*)?
89 cluster_var_run_t
91 /var/run/crm(/.*)?
93 /var/run/cman_.*
94 /var/run/rsctmp(/.*)?
95 /var/run/aisexec.*
96 /var/run/heartbeat(/.*)?
97 /var/run/pcsd-ruby.socket
98 /var/run/corosync-qnetd(/.*)?
99 /var/run/corosync-qdevice(/.*)?
100 /var/run/corosync.pid
101 /var/run/cpglockd.pid
102 /var/run/rgmanager.pid
103 /var/run/cluster/rgmanager.sk
104 krb5_host_rcache_t
106 /var/tmp/krb5_0.rcache2
108 /var/cache/krb5rcache(/.*)?
109 /var/tmp/nfs_0
110 /var/tmp/DNS_25
111 /var/tmp/host_0
112 /var/tmp/imap_0
113 /var/tmp/HTTP_23
114 /var/tmp/HTTP_48
115 /var/tmp/ldap_55
116 /var/tmp/ldap_487
117 /var/tmp/ldapmap1_0
118 mailman_data_t
120 /etc/mailman.*
122 /var/lib/mailman(/.*)?
123 /var/spool/mailman.*
124 postfix_data_t
126 /var/lib/postfix.*
128 postfix_private_t
130 /var/spool/postfix/private(/.*)?
132 postfix_prng_t
134 /etc/postfix/prng_exch
136 postfix_spool_t
138 /var/spool/postfix.*
140 /var/spool/postfix/defer(/.*)?
141 /var/spool/postfix/flush(/.*)?
142 /var/spool/postfix/deferred(/.*)?
143 /var/spool/postfix/maildrop(/.*)?
144 postfix_var_run_t
146 /var/spool/postfix/pid/.*
148 root_t
150 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
152 /
153 /initrd
154
157 SELinux requires files to have an extended attribute to define the file
158 type.
159 You can see the context of a file using the -Z option to ls
161 Policy governs the access confined processes have to these files.
163 SELinux postfix_master policy is very flexible allowing users to setup
164 their postfix_master processes in as secure a method as possible.
165 The following file types are defined for postfix_master:
167 postfix_master_exec_t
171 - Set files with the postfix_master_exec_t type, if you want to transi‐
173 tion an executable to the postfix_master_t domain.
174 Paths:
177 /usr/sbin/postcat, /usr/sbin/postfix, /usr/sbin/postlog,
178 /usr/sbin/postkick, /usr/sbin/postlock, /usr/sbin/postalias,
179 /usr/sbin/postsuper, /usr/libexec/postfix/master
180 Note: File context can be temporarily modified with the chcon command.
183 If you want to permanently change the file context you need to use the
184 semanage fcontext command. This will modify the SELinux labeling data‐
185 base. You will need to use restorecon to apply the labels.
186
189 semanage fcontext can also be used to manipulate default file context
190 mappings.
191 semanage permissive can also be used to manipulate whether or not a
193 process type is permissive.
194 semanage module can also be used to enable/disable/install/remove pol‐
196 icy modules.
197 semanage boolean can also be used to manipulate the booleans
199 system-config-selinux is a GUI tool available to customize SELinux pol‐
202 icy settings.
203
206 This manual page was auto-generated using sepolicy manpage .
207
210 selinux(8), postfix_master(8), semanage(8), restorecon(8), chcon(1),
211 sepolicy(8), setsebool(8)
212postfix_master 23-02-03 postfix_master_selinux(8)