1cobblerd_selinux(8) SELinux Policy cobblerd cobblerd_selinux(8)
2
6 cobblerd_selinux - Security Enhanced Linux Policy for the cobblerd pro‐
7 cesses
8
10 Security-Enhanced Linux secures the cobblerd processes via flexible
11 mandatory access control.
12 The cobblerd processes execute with the cobblerd_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
16 For example:
18 ps -eZ | grep cobblerd_t
20
24 The cobblerd_t SELinux type can be entered via the cobblerd_exec_t file
25 type.
26 The default entrypoint paths for the cobblerd_t domain are the follow‐
28 ing:
29 /usr/bin/cobblerd
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 cobblerd policy is very flexible allowing users to setup their cobblerd
40 processes in as secure a method as possible.
41 The following process types are defined for cobblerd:
43 cobblerd_t
45 Note: semanage permissive -a cobblerd_t can be used to make the process
47 type cobblerd_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
50
53 SELinux policy is customizable based on least access required. cob‐
54 blerd policy is extremely flexible and has several booleans that allow
55 you to manipulate the policy and run cobblerd with the tightest access
56 possible.
57 If you want to determine whether Cobbler can connect to the network
61 using TCP, you must turn on the cobbler_can_network_connect boolean.
62 Disabled by default.
63 setsebool -P cobbler_can_network_connect 1
65 If you want to determine whether Cobbler can access cifs file systems,
69 you must turn on the cobbler_use_cifs boolean. Disabled by default.
70 setsebool -P cobbler_use_cifs 1
72 If you want to determine whether Cobbler can access nfs file systems,
76 you must turn on the cobbler_use_nfs boolean. Disabled by default.
77 setsebool -P cobbler_use_nfs 1
79 If you want to allow users to resolve user passwd entries directly from
83 ldap rather then using a sssd server, you must turn on the authlo‐
84 gin_nsswitch_use_ldap boolean. Disabled by default.
85 setsebool -P authlogin_nsswitch_use_ldap 1
87 If you want to allow all daemons to write corefiles to /, you must turn
91 on the daemons_dump_core boolean. Disabled by default.
92 setsebool -P daemons_dump_core 1
94 If you want to enable cluster mode for daemons, you must turn on the
98 daemons_enable_cluster_mode boolean. Enabled by default.
99 setsebool -P daemons_enable_cluster_mode 1
101 If you want to allow all daemons to use tcp wrappers, you must turn on
105 the daemons_use_tcp_wrapper boolean. Disabled by default.
106 setsebool -P daemons_use_tcp_wrapper 1
108 If you want to allow all daemons the ability to read/write terminals,
112 you must turn on the daemons_use_tty boolean. Disabled by default.
113 setsebool -P daemons_use_tty 1
115 If you want to deny any process from ptracing or debugging any other
119 processes, you must turn on the deny_ptrace boolean. Enabled by
120 default.
121 setsebool -P deny_ptrace 1
123 If you want to allow any process to mmap any file on system with
127 attribute file_type, you must turn on the domain_can_mmap_files bool‐
128 ean. Enabled by default.
129 setsebool -P domain_can_mmap_files 1
131 If you want to allow all domains write to kmsg_device, while kernel is
135 executed with systemd.log_target=kmsg parameter, you must turn on the
136 domain_can_write_kmsg boolean. Disabled by default.
137 setsebool -P domain_can_write_kmsg 1
139 If you want to allow all domains to use other domains file descriptors,
143 you must turn on the domain_fd_use boolean. Enabled by default.
144 setsebool -P domain_fd_use 1
146 If you want to allow all domains to have the kernel load modules, you
150 must turn on the domain_kernel_load_modules boolean. Disabled by
151 default.
152 setsebool -P domain_kernel_load_modules 1
154 If you want to allow all domains to execute in fips_mode, you must turn
158 on the fips_mode boolean. Enabled by default.
159 setsebool -P fips_mode 1
161 If you want to enable reading of urandom for all domains, you must turn
165 on the global_ssp boolean. Disabled by default.
166 setsebool -P global_ssp 1
168 If you want to allow confined applications to run with kerberos, you
172 must turn on the kerberos_enabled boolean. Enabled by default.
173 setsebool -P kerberos_enabled 1
175 If you want to allow system to run with NIS, you must turn on the
179 nis_enabled boolean. Disabled by default.
180 setsebool -P nis_enabled 1
182 If you want to allow confined applications to use nscd shared memory,
186 you must turn on the nscd_use_shm boolean. Disabled by default.
187 setsebool -P nscd_use_shm 1
189
193 SELinux defines port types to represent TCP and UDP ports.
194 You can see the types associated with a port by using the following
196 command:
197 semanage port -l
199 Policy governs the access confined processes have to these ports.
202 SELinux cobblerd policy is very flexible allowing users to setup their
203 cobblerd processes in as secure a method as possible.
204 The following port types are defined for cobblerd:
206 cobbler_port_t
209 Default Defined Ports:
213 tcp 25151
214
216 The SELinux process type cobblerd_t can manage files labeled with the
217 following file types. The paths listed are the default paths for these
218 file types. Note the processes UID still need to have DAC permissions.
219 cifs_t
221 cluster_conf_t
224 /etc/cluster(/.*)?
226 cluster_var_lib_t
228 /var/lib/pcsd(/.*)?
230 /var/lib/cluster(/.*)?
231 /var/lib/openais(/.*)?
232 /var/lib/pengine(/.*)?
233 /var/lib/corosync(/.*)?
234 /usr/lib/heartbeat(/.*)?
235 /var/lib/heartbeat(/.*)?
236 /var/lib/pacemaker(/.*)?
237 cluster_var_run_t
239 /var/run/crm(/.*)?
241 /var/run/cman_.*
242 /var/run/rsctmp(/.*)?
243 /var/run/aisexec.*
244 /var/run/heartbeat(/.*)?
245 /var/run/corosync-qnetd(/.*)?
246 /var/run/corosync-qdevice(/.*)?
247 /var/run/cpglockd.pid
248 /var/run/corosync.pid
249 /var/run/rgmanager.pid
250 /var/run/cluster/rgmanager.sk
251 cobbler_tmp_t
253 cobbler_var_lib_t
256 /var/lib/cobbler(/.*)?
258 /var/www/cobbler(/.*)?
259 /var/cache/cobbler(/.*)?
260 /var/lib/tftpboot/etc(/.*)?
261 /var/lib/tftpboot/ppc(/.*)?
262 /var/lib/tftpboot/boot(/.*)?
263 /var/lib/tftpboot/grub(/.*)?
264 /var/lib/tftpboot/s390x(/.*)?
265 /var/lib/tftpboot/images(/.*)?
266 /var/lib/tftpboot/aarch64(/.*)?
267 /var/lib/tftpboot/images2(/.*)?
268 /var/lib/tftpboot/pxelinux.cfg(/.*)?
269 /var/lib/tftpboot/yaboot
270 /var/lib/tftpboot/memdisk
271 /var/lib/tftpboot/menu.c32
272 /var/lib/tftpboot/pxelinux.0
273 dhcp_etc_t
275 /etc/dhcpc.*
277 /etc/dhcp3?(/.*)?
278 /etc/dhcpd(6)?.conf
279 /etc/dhcp3?/dhclient.*
280 /etc/dhclient.*conf
281 /etc/dhcp/dhcpd(6)?.conf
282 /etc/dhclient-script
283 dnsmasq_etc_t
285 /etc/dnsmasq.d(/.*)?
287 /etc/dnsmasq.conf
288 named_conf_t
290 /etc/rndc.*
292 /etc/unbound(/.*)?
293 /var/named/chroot(/.*)?
294 /etc/named.rfc1912.zones
295 /var/named/chroot/etc/named.rfc1912.zones
296 /etc/named.conf
297 /var/named/named.ca
298 /etc/named.root.hints
299 /var/named/chroot/etc/named.conf
300 /etc/named.caching-nameserver.conf
301 /var/named/chroot/var/named/named.ca
302 /var/named/chroot/etc/named.root.hints
303 /var/named/chroot/etc/named.caching-nameserver.conf
304 named_zone_t
306 /var/named(/.*)?
308 /var/named/chroot/var/named(/.*)?
309 net_conf_t
311 /etc/hosts[^/]*
313 /etc/yp.conf.*
314 /etc/denyhosts.*
315 /etc/hosts.deny.*
316 /etc/resolv.conf.*
317 /etc/.resolv.conf.*
318 /etc/resolv-secure.conf.*
319 /var/run/systemd/network(/.*)?
320 /etc/sysconfig/networking(/.*)?
321 /etc/sysconfig/network-scripts(/.*)?
322 /etc/sysconfig/network-scripts/.*resolv.conf
323 /var/run/NetworkManager/resolv.conf.*
324 /etc/ethers
325 /etc/ntp.conf
326 /var/run/systemd/resolve/resolv.conf
327 nfs_t
329 public_content_rw_t
332 /var/spool/abrt-upload(/.*)?
334 root_t
336 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
338 /
339 /initrd
340 rsync_etc_t
342 /etc/rsyncd.conf
344 systemd_passwd_var_run_t
346 /var/run/systemd/ask-password(/.*)?
348 /var/run/systemd/ask-password-block(/.*)?
349 tftpd_etc_t
351 /etc/(x)?inetd.d/tftp
353
356 SELinux requires files to have an extended attribute to define the file
357 type.
358 You can see the context of a file using the -Z option to ls
360 Policy governs the access confined processes have to these files.
362 SELinux cobblerd policy is very flexible allowing users to setup their
363 cobblerd processes in as secure a method as possible.
364 The following file types are defined for cobblerd:
366 cobblerd_exec_t
370 - Set files with the cobblerd_exec_t type, if you want to transition an
372 executable to the cobblerd_t domain.
373 cobblerd_initrc_exec_t
377 - Set files with the cobblerd_initrc_exec_t type, if you want to tran‐
379 sition an executable to the cobblerd_initrc_t domain.
380 Note: File context can be temporarily modified with the chcon command.
384 If you want to permanently change the file context you need to use the
385 semanage fcontext command. This will modify the SELinux labeling data‐
386 base. You will need to use restorecon to apply the labels.
387
390 If you want to share files with multiple domains (Apache, FTP, rsync,
391 Samba), you can set a file context of public_content_t and public_con‐
392 tent_rw_t. These context allow any of the above domains to read the
393 content. If you want a particular domain to write to the public_con‐
394 tent_rw_t domain, you must set the appropriate boolean.
395 Allow cobblerd servers to read the /var/cobblerd directory by adding
397 the public_content_t file type to the directory and by restoring the
398 file type.
399 semanage fcontext -a -t public_content_t "/var/cobblerd(/.*)?"
401 restorecon -F -R -v /var/cobblerd
402 Allow cobblerd servers to read and write /var/cobblerd/incoming by
404 adding the public_content_rw_t type to the directory and by restoring
405 the file type. You also need to turn on the cobblerd_anon_write bool‐
406 ean.
407 semanage fcontext -a -t public_content_rw_t "/var/cobblerd/incom‐
409 ing(/.*)?"
410 restorecon -F -R -v /var/cobblerd/incoming
411 setsebool -P cobblerd_anon_write 1
412 If you want to determine whether Cobbler can modify public files used
415 for public file transfer services., you must turn on the cob‐
416 bler_anon_write boolean.
417 setsebool -P cobbler_anon_write 1
419
422 semanage fcontext can also be used to manipulate default file context
423 mappings.
424 semanage permissive can also be used to manipulate whether or not a
426 process type is permissive.
427 semanage module can also be used to enable/disable/install/remove pol‐
429 icy modules.
430 semanage port can also be used to manipulate the port definitions
432 semanage boolean can also be used to manipulate the booleans
434 system-config-selinux is a GUI tool available to customize SELinux pol‐
437 icy settings.
438
441 This manual page was auto-generated using sepolicy manpage .
442
445 selinux(8), cobblerd(8), semanage(8), restorecon(8), chcon(1), sepol‐
446 icy(8) , setsebool(8)
447cobblerd 19-04-25 cobblerd_selinux(8)