1sshd_keygen_selinux(8) SELinux Policy sshd_keygen sshd_keygen_selinux(8)
2
6 sshd_keygen_selinux - Security Enhanced Linux Policy for the sshd_key‐
7 gen processes
8
10 Security-Enhanced Linux secures the sshd_keygen processes via flexible
11 mandatory access control.
12 The sshd_keygen processes execute with the sshd_keygen_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16 For example:
18 ps -eZ | grep sshd_keygen_t
20
24 The sshd_keygen_t SELinux type can be entered via the sshd_key‐
25 gen_exec_t file type.
26 The default entrypoint paths for the sshd_keygen_t domain are the fol‐
28 lowing:
29 /usr/sbin/sshd-keygen
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 sshd_keygen policy is very flexible allowing users to setup their
40 sshd_keygen processes in as secure a method as possible.
41 The following process types are defined for sshd_keygen:
43 sshd_keygen_t
45 Note: semanage permissive -a sshd_keygen_t can be used to make the
47 process type sshd_keygen_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 sshd_keygen policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run sshd_keygen with the tight‐
56 est access possible.
57 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
63 setsebool -P authlogin_nsswitch_use_ldap 1
65 If you want to allow all daemons to write corefiles to /, you must turn
69 on the daemons_dump_core boolean. Disabled by default.
70 setsebool -P daemons_dump_core 1
72 If you want to enable cluster mode for daemons, you must turn on the
76 daemons_enable_cluster_mode boolean. Enabled by default.
77 setsebool -P daemons_enable_cluster_mode 1
79 If you want to allow all daemons to use tcp wrappers, you must turn on
83 the daemons_use_tcp_wrapper boolean. Disabled by default.
84 setsebool -P daemons_use_tcp_wrapper 1
86 If you want to allow all daemons the ability to read/write terminals,
90 you must turn on the daemons_use_tty boolean. Disabled by default.
91 setsebool -P daemons_use_tty 1
93 If you want to deny any process from ptracing or debugging any other
97 processes, you must turn on the deny_ptrace boolean. Enabled by
98 default.
99 setsebool -P deny_ptrace 1
101 If you want to allow any process to mmap any file on system with
105 attribute file_type, you must turn on the domain_can_mmap_files bool‐
106 ean. Enabled by default.
107 setsebool -P domain_can_mmap_files 1
109 If you want to allow all domains write to kmsg_device, while kernel is
113 executed with systemd.log_target=kmsg parameter, you must turn on the
114 domain_can_write_kmsg boolean. Disabled by default.
115 setsebool -P domain_can_write_kmsg 1
117 If you want to allow all domains to use other domains file descriptors,
121 you must turn on the domain_fd_use boolean. Enabled by default.
122 setsebool -P domain_fd_use 1
124 If you want to allow all domains to have the kernel load modules, you
128 must turn on the domain_kernel_load_modules boolean. Disabled by
129 default.
130 setsebool -P domain_kernel_load_modules 1
132 If you want to allow all domains to execute in fips_mode, you must turn
136 on the fips_mode boolean. Enabled by default.
137 setsebool -P fips_mode 1
139 If you want to enable reading of urandom for all domains, you must turn
143 on the global_ssp boolean. Disabled by default.
144 setsebool -P global_ssp 1
146 If you want to allow confined applications to run with kerberos, you
150 must turn on the kerberos_enabled boolean. Enabled by default.
151 setsebool -P kerberos_enabled 1
153 If you want to allow system to run with NIS, you must turn on the
157 nis_enabled boolean. Disabled by default.
158 setsebool -P nis_enabled 1
160 If you want to allow confined applications to use nscd shared memory,
164 you must turn on the nscd_use_shm boolean. Disabled by default.
165 setsebool -P nscd_use_shm 1
167
171 The SELinux process type sshd_keygen_t can manage files labeled with
172 the following file types. The paths listed are the default paths for
173 these file types. Note the processes UID still need to have DAC per‐
174 missions.
175 cluster_conf_t
177 /etc/cluster(/.*)?
179 cluster_var_lib_t
181 /var/lib/pcsd(/.*)?
183 /var/lib/cluster(/.*)?
184 /var/lib/openais(/.*)?
185 /var/lib/pengine(/.*)?
186 /var/lib/corosync(/.*)?
187 /usr/lib/heartbeat(/.*)?
188 /var/lib/heartbeat(/.*)?
189 /var/lib/pacemaker(/.*)?
190 cluster_var_run_t
192 /var/run/crm(/.*)?
194 /var/run/cman_.*
195 /var/run/rsctmp(/.*)?
196 /var/run/aisexec.*
197 /var/run/heartbeat(/.*)?
198 /var/run/corosync-qnetd(/.*)?
199 /var/run/corosync-qdevice(/.*)?
200 /var/run/cpglockd.pid
201 /var/run/corosync.pid
202 /var/run/rgmanager.pid
203 /var/run/cluster/rgmanager.sk
204 root_t
206 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
208 /
209 /initrd
210 sshd_key_t
212 /etc/ssh/ssh_host.*_key
214 /etc/ssh/ssh_host.*_key.pub
215 /etc/ssh/primes
216
219 SELinux requires files to have an extended attribute to define the file
220 type.
221 You can see the context of a file using the -Z option to ls
223 Policy governs the access confined processes have to these files.
225 SELinux sshd_keygen policy is very flexible allowing users to setup
226 their sshd_keygen processes in as secure a method as possible.
227 STANDARD FILE CONTEXT
229 SELinux defines the file context types for the sshd_keygen, if you
231 wanted to store files with these types in a diffent paths, you need to
232 execute the semanage command to sepecify alternate labeling and then
233 use restorecon to put the labels on disk.
234 semanage fcontext -a -t sshd_keygen_unit_file_t '/srv/mysshd_key‐
236 gen_content(/.*)?'
237 restorecon -R -v /srv/mysshd_keygen_content
238 Note: SELinux often uses regular expressions to specify labels that
240 match multiple files.
241 The following file types are defined for sshd_keygen:
243 sshd_keygen_exec_t
247 - Set files with the sshd_keygen_exec_t type, if you want to transition
249 an executable to the sshd_keygen_t domain.
250 sshd_keygen_unit_file_t
254 - Set files with the sshd_keygen_unit_file_t type, if you want to treat
256 the files as sshd keygen unit content.
257 Note: File context can be temporarily modified with the chcon command.
261 If you want to permanently change the file context you need to use the
262 semanage fcontext command. This will modify the SELinux labeling data‐
263 base. You will need to use restorecon to apply the labels.
264
267 semanage fcontext can also be used to manipulate default file context
268 mappings.
269 semanage permissive can also be used to manipulate whether or not a
271 process type is permissive.
272 semanage module can also be used to enable/disable/install/remove pol‐
274 icy modules.
275 semanage boolean can also be used to manipulate the booleans
277 system-config-selinux is a GUI tool available to customize SELinux pol‐
280 icy settings.
281
284 This manual page was auto-generated using sepolicy manpage .
285
288 selinux(8), sshd_keygen(8), semanage(8), restorecon(8), chcon(1),
289 sepolicy(8) , setsebool(8)
290sshd_keygen 19-04-25 sshd_keygen_selinux(8)