1courier_tcpd_selinux(8) SELinux Policy courier_tcpd courier_tcpd_selinux(8)
2
6 courier_tcpd_selinux - Security Enhanced Linux Policy for the
7 courier_tcpd processes
8
10 Security-Enhanced Linux secures the courier_tcpd processes via flexible
11 mandatory access control.
12 The courier_tcpd processes execute with the courier_tcpd_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 courier_tcpd_t
20
24 The courier_tcpd_t SELinux type can be entered via the
25 courier_tcpd_exec_t file type.
26 The default entrypoint paths for the courier_tcpd_t domain are the fol‐
28 lowing:
29 /usr/sbin/couriertcpd
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 courier_tcpd policy is very flexible allowing users to setup their
40 courier_tcpd processes in as secure a method as possible.
41 The following process types are defined for courier_tcpd:
43 courier_tcpd_t
45 Note: semanage permissive -a courier_tcpd_t can be used to make the
47 process type courier_tcpd_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.
54 courier_tcpd policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run courier_tcpd with the tight‐
56 est access possible.
57 If you want to dontaudit all daemons scheduling requests (setsched,
61 sys_nice), you must turn on the daemons_dontaudit_scheduling boolean.
62 Enabled by default.
63 setsebool -P daemons_dontaudit_scheduling 1
65 If you want to allow all domains to execute in fips_mode, you must turn
69 on the fips_mode boolean. Enabled by default.
70 setsebool -P fips_mode 1
72
76 The SELinux process type courier_tcpd_t can manage files labeled with
77 the following file types. The paths listed are the default paths for
78 these file types. Note the processes UID still need to have DAC per‐
79 missions.
80 cluster_conf_t
82 /etc/cluster(/.*)?
84 cluster_var_lib_t
86 /var/lib/pcsd(/.*)?
88 /var/lib/cluster(/.*)?
89 /var/lib/openais(/.*)?
90 /var/lib/pengine(/.*)?
91 /var/lib/corosync(/.*)?
92 /usr/lib/heartbeat(/.*)?
93 /var/lib/heartbeat(/.*)?
94 /var/lib/pacemaker(/.*)?
95 cluster_var_run_t
97 /var/run/crm(/.*)?
99 /var/run/cman_.*
100 /var/run/rsctmp(/.*)?
101 /var/run/aisexec.*
102 /var/run/heartbeat(/.*)?
103 /var/run/pcsd-ruby.socket
104 /var/run/corosync-qnetd(/.*)?
105 /var/run/corosync-qdevice(/.*)?
106 /var/run/corosync.pid
107 /var/run/cpglockd.pid
108 /var/run/rgmanager.pid
109 /var/run/cluster/rgmanager.sk
110 courier_var_lib_t
112 /var/lib/courier(/.*)?
114 /var/lib/courier-imap(/.*)?
115 courier_var_run_t
117 /var/run/courier(/.*)?
119 root_t
121 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
123 /
124 /initrd
125
128 SELinux requires files to have an extended attribute to define the file
129 type.
130 You can see the context of a file using the -Z option to ls
132 Policy governs the access confined processes have to these files.
134 SELinux courier_tcpd policy is very flexible allowing users to setup
135 their courier_tcpd processes in as secure a method as possible.
136 STANDARD FILE CONTEXT
138 SELinux defines the file context types for the courier_tcpd, if you
140 wanted to store files with these types in a different paths, you need
141 to execute the semanage command to specify alternate labeling and then
142 use restorecon to put the labels on disk.
143 semanage fcontext -a -t courier_tcpd_exec_t '/srv/courier_tcpd/con‐
145 tent(/.*)?'
146 restorecon -R -v /srv/mycourier_tcpd_content
147 Note: SELinux often uses regular expressions to specify labels that
149 match multiple files.
150 The following file types are defined for courier_tcpd:
152 courier_tcpd_exec_t
156 - Set files with the courier_tcpd_exec_t type, if you want to transi‐
158 tion an executable to the courier_tcpd_t domain.
159 Note: File context can be temporarily modified with the chcon command.
163 If you want to permanently change the file context you need to use the
164 semanage fcontext command. This will modify the SELinux labeling data‐
165 base. You will need to use restorecon to apply the labels.
166
169 semanage fcontext can also be used to manipulate default file context
170 mappings.
171 semanage permissive can also be used to manipulate whether or not a
173 process type is permissive.
174 semanage module can also be used to enable/disable/install/remove pol‐
176 icy modules.
177 semanage boolean can also be used to manipulate the booleans
179 system-config-selinux is a GUI tool available to customize SELinux pol‐
182 icy settings.
183
186 This manual page was auto-generated using sepolicy manpage .
187
190 selinux(8), courier_tcpd(8), semanage(8), restorecon(8), chcon(1), se‐
191 policy(8), setsebool(8)
192courier_tcpd 23-10-20 courier_tcpd_selinux(8)