courier_tcpd_selinux(8)

1courier_tcpd_selinux(8)   SELinux Policy courier_tcpd  courier_tcpd_selinux(8)
2
3
4

NAME

6       courier_tcpd_selinux   -   Security   Enhanced  Linux  Policy  for  the
7       courier_tcpd processes
8

DESCRIPTION

10       Security-Enhanced Linux secures the courier_tcpd processes via flexible
11       mandatory access control.
12
13       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
17       For example:
18
19       ps -eZ | grep courier_tcpd_t
20
21
22

ENTRYPOINTS

24       The    courier_tcpd_t   SELinux   type   can   be   entered   via   the
25       courier_tcpd_exec_t file type.
26
27       The default entrypoint paths for the courier_tcpd_t domain are the fol‐
28       lowing:
29
30       /usr/sbin/couriertcpd
31

PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
35
36       You can see the context of a process using the -Z option to ps
37
38       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
42       The following process types are defined for courier_tcpd:
43
44       courier_tcpd_t
45
46       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
51

BOOLEANS

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
58
59
60       If you want to allow all daemons to write corefiles to /, you must turn
61       on the daemons_dump_core boolean. Disabled by default.
62
63       setsebool -P daemons_dump_core 1
64
65
66
67       If  you  want  to enable cluster mode for daemons, you must turn on the
68       daemons_enable_cluster_mode boolean. Enabled by default.
69
70       setsebool -P daemons_enable_cluster_mode 1
71
72
73
74       If you want to allow all daemons to use tcp wrappers, you must turn  on
75       the daemons_use_tcp_wrapper boolean. Disabled by default.
76
77       setsebool -P daemons_use_tcp_wrapper 1
78
79
80
81       If  you  want to allow all daemons the ability to read/write terminals,
82       you must turn on the daemons_use_tty boolean. Disabled by default.
83
84       setsebool -P daemons_use_tty 1
85
86
87
88       If you want to deny any process from ptracing or  debugging  any  other
89       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
90       default.
91
92       setsebool -P deny_ptrace 1
93
94
95
96       If you want to allow any process  to  mmap  any  file  on  system  with
97       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
98       ean. Enabled by default.
99
100       setsebool -P domain_can_mmap_files 1
101
102
103
104       If you want to allow all domains write to kmsg_device, while kernel  is
105       executed  with  systemd.log_target=kmsg parameter, you must turn on the
106       domain_can_write_kmsg boolean. Disabled by default.
107
108       setsebool -P domain_can_write_kmsg 1
109
110
111
112       If you want to allow all domains to use other domains file descriptors,
113       you must turn on the domain_fd_use boolean. Enabled by default.
114
115       setsebool -P domain_fd_use 1
116
117
118
119       If  you  want to allow all domains to have the kernel load modules, you
120       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
121       default.
122
123       setsebool -P domain_kernel_load_modules 1
124
125
126
127       If you want to allow all domains to execute in fips_mode, you must turn
128       on the fips_mode boolean. Enabled by default.
129
130       setsebool -P fips_mode 1
131
132
133
134       If you want to enable reading of urandom for all domains, you must turn
135       on the global_ssp boolean. Disabled by default.
136
137       setsebool -P global_ssp 1
138
139
140

MANAGED FILES

142       The  SELinux  process type courier_tcpd_t can manage files labeled with
143       the following file types.  The paths listed are the default  paths  for
144       these  file  types.  Note the processes UID still need to have DAC per‐
145       missions.
146
147       cluster_conf_t
148
149            /etc/cluster(/.*)?
150
151       cluster_var_lib_t
152
153            /var/lib/pcsd(/.*)?
154            /var/lib/cluster(/.*)?
155            /var/lib/openais(/.*)?
156            /var/lib/pengine(/.*)?
157            /var/lib/corosync(/.*)?
158            /usr/lib/heartbeat(/.*)?
159            /var/lib/heartbeat(/.*)?
160            /var/lib/pacemaker(/.*)?
161
162       cluster_var_run_t
163
164            /var/run/crm(/.*)?
165            /var/run/cman_.*
166            /var/run/rsctmp(/.*)?
167            /var/run/aisexec.*
168            /var/run/heartbeat(/.*)?
169            /var/run/corosync-qnetd(/.*)?
170            /var/run/corosync-qdevice(/.*)?
171            /var/run/cpglockd.pid
172            /var/run/corosync.pid
173            /var/run/rgmanager.pid
174            /var/run/cluster/rgmanager.sk
175
176       courier_var_lib_t
177
178            /var/lib/courier(/.*)?
179            /var/lib/courier-imap(/.*)?
180
181       courier_var_run_t
182
183            /var/run/courier(/.*)?
184
185       root_t
186
187            /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
188            /
189            /initrd
190
191

FILE CONTEXTS

193       SELinux requires files to have an extended attribute to define the file
194       type.
195
196       You can see the context of a file using the -Z option to ls
197
198       Policy  governs  the  access  confined  processes  have to these files.
199       SELinux courier_tcpd policy is very flexible allowing  users  to  setup
200       their courier_tcpd processes in as secure a method as possible.
201
202       The following file types are defined for courier_tcpd:
203
204
205
206       courier_tcpd_exec_t
207
208       -  Set  files with the courier_tcpd_exec_t type, if you want to transi‐
209       tion an executable to the courier_tcpd_t domain.
210
211
212
213       Note: File context can be temporarily modified with the chcon  command.
214       If  you want to permanently change the file context you need to use the
215       semanage fcontext command.  This will modify the SELinux labeling data‐
216       base.  You will need to use restorecon to apply the labels.
217
218

COMMANDS

220       semanage  fcontext  can also be used to manipulate default file context
221       mappings.
222
223       semanage permissive can also be used to manipulate  whether  or  not  a
224       process type is permissive.
225
226       semanage  module can also be used to enable/disable/install/remove pol‐
227       icy modules.
228
229       semanage boolean can also be used to manipulate the booleans
230
231
232       system-config-selinux is a GUI tool available to customize SELinux pol‐
233       icy settings.
234
235

AUTHOR

237       This manual page was auto-generated using sepolicy manpage .
238
239