telnetd_selinux(8)

1telnetd_selinux(8)          SELinux Policy telnetd          telnetd_selinux(8)
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NAME

6       telnetd_selinux  -  Security Enhanced Linux Policy for the telnetd pro‐
7       cesses
8

DESCRIPTION

10       Security-Enhanced Linux secures  the  telnetd  processes  via  flexible
11       mandatory access control.
12
13       The  telnetd processes execute with the telnetd_t SELinux type. You can
14       check if you have these processes running by executing the  ps  command
15       with the -Z qualifier.
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17       For example:
18
19       ps -eZ | grep telnetd_t
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21
22

ENTRYPOINTS

24       The  telnetd_t  SELinux type can be entered via the telnetd_exec_t file
25       type.
26
27       The default entrypoint paths for the telnetd_t domain are  the  follow‐
28       ing:
29
30       /usr/sbin/in.telnetd, /usr/kerberos/sbin/telnetd
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       telnetd  policy  is very flexible allowing users to setup their telnetd
40       processes in as secure a method as possible.
41
42       The following process types are defined for telnetd:
43
44       telnetd_t
45
46       Note: semanage permissive -a telnetd_t can be used to make the  process
47       type  telnetd_t  permissive. SELinux does not deny access to permissive
48       process types, but the AVC (SELinux denials) messages are still  gener‐
49       ated.
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51

BOOLEANS

53       SELinux policy is customizable based on least access required.  telnetd
54       policy is extremely flexible and has several booleans that allow you to
55       manipulate  the  policy and run telnetd with the tightest access possi‐
56       ble.
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59
60       If you want to allow all domains to execute in fips_mode, you must turn
61       on the fips_mode boolean. Enabled by default.
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63       setsebool -P fips_mode 1
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67       If  you  want  to allow confined applications to run with kerberos, you
68       must turn on the kerberos_enabled boolean. Enabled by default.
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70       setsebool -P kerberos_enabled 1
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74       If you want to support NFS home  directories,  you  must  turn  on  the
75       use_nfs_home_dirs boolean. Disabled by default.
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77       setsebool -P use_nfs_home_dirs 1
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81       If  you  want  to  support SAMBA home directories, you must turn on the
82       use_samba_home_dirs boolean. Disabled by default.
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84       setsebool -P use_samba_home_dirs 1
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PORT TYPES

89       SELinux defines port types to represent TCP and UDP ports.
90
91       You can see the types associated with a port  by  using  the  following
92       command:
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94       semanage port -l
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96
97       Policy  governs  the  access  confined  processes  have to these ports.
98       SELinux telnetd policy is very flexible allowing users to  setup  their
99       telnetd processes in as secure a method as possible.
100
101       The following port types are defined for telnetd:
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103
104       telnetd_port_t
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108       Default Defined Ports:
109                 tcp 23
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MANAGED FILES

112       The  SELinux  process  type telnetd_t can manage files labeled with the
113       following file types.  The paths listed are the default paths for these
114       file types.  Note the processes UID still need to have DAC permissions.
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116       cluster_conf_t
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118            /etc/cluster(/.*)?
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120       cluster_var_lib_t
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122            /var/lib/pcsd(/.*)?
123            /var/lib/cluster(/.*)?
124            /var/lib/openais(/.*)?
125            /var/lib/pengine(/.*)?
126            /var/lib/corosync(/.*)?
127            /usr/lib/heartbeat(/.*)?
128            /var/lib/heartbeat(/.*)?
129            /var/lib/pacemaker(/.*)?
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131       cluster_var_run_t
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133            /var/run/crm(/.*)?
134            /var/run/cman_.*
135            /var/run/rsctmp(/.*)?
136            /var/run/aisexec.*
137            /var/run/heartbeat(/.*)?
138            /var/run/pcsd-ruby.socket
139            /var/run/corosync-qnetd(/.*)?
140            /var/run/corosync-qdevice(/.*)?
141            /var/run/corosync.pid
142            /var/run/cpglockd.pid
143            /var/run/rgmanager.pid
144            /var/run/cluster/rgmanager.sk
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146       initrc_var_run_t
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148            /var/run/utmp
149            /var/run/random-seed
150            /var/run/runlevel.dir
151            /var/run/setmixer_flag
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153       krb5_host_rcache_t
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155            /var/tmp/krb5_0.rcache2
156            /var/cache/krb5rcache(/.*)?
157            /var/tmp/nfs_0
158            /var/tmp/DNS_25
159            /var/tmp/host_0
160            /var/tmp/imap_0
161            /var/tmp/HTTP_23
162            /var/tmp/HTTP_48
163            /var/tmp/ldap_55
164            /var/tmp/ldap_487
165            /var/tmp/ldapmap1_0
166
167       root_t
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169            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
170            /
171            /initrd
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173       security_t
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175            /selinux
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177       telnetd_tmp_t
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180       telnetd_var_run_t
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182
183       user_tmp_t
184
185            /dev/shm/mono.*
186            /var/run/user/[^/]+
187            /tmp/.ICE-unix(/.*)?
188            /tmp/.X11-unix(/.*)?
189            /dev/shm/pulse-shm.*
190            /tmp/.X0-lock
191            /var/run/user
192            /tmp/hsperfdata_root
193            /var/tmp/hsperfdata_root
194            /home/[^/]+/tmp
195            /home/[^/]+/.tmp
196            /var/run/user/[0-9]+
197            /tmp/gconfd-[^/]+
198
199       wtmp_t
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201            /var/log/wtmp.*
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FILE CONTEXTS

205       SELinux requires files to have an extended attribute to define the file
206       type.
207
208       You can see the context of a file using the -Z option to ls
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210       Policy governs the access  confined  processes  have  to  these  files.
211       SELinux  telnetd  policy is very flexible allowing users to setup their
212       telnetd processes in as secure a method as possible.
213
214       STANDARD FILE CONTEXT
215
216       SELinux defines the file context types for the telnetd, if  you  wanted
217       to store files with these types in a diffent paths, you need to execute
218       the semanage command to specify alternate labeling  and  then  use  re‐
219       storecon to put the labels on disk.
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221       semanage   fcontext   -a   -t   telnetd_var_run_t  '/srv/mytelnetd_con‐
222       tent(/.*)?'
223       restorecon -R -v /srv/mytelnetd_content
224
225       Note: SELinux often uses regular expressions  to  specify  labels  that
226       match multiple files.
227
228       The following file types are defined for telnetd:
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232       telnetd_exec_t
233
234       -  Set files with the telnetd_exec_t type, if you want to transition an
235       executable to the telnetd_t domain.
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237
238       Paths:
239            /usr/sbin/in.telnetd, /usr/kerberos/sbin/telnetd
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241
242       telnetd_keytab_t
243
244       - Set files with the telnetd_keytab_t type, if you want  to  treat  the
245       files as kerberos keytab files.
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249       telnetd_tmp_t
250
251       -  Set  files with the telnetd_tmp_t type, if you want to store telnetd
252       temporary files in the /tmp directories.
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256       telnetd_var_run_t
257
258       - Set files with the telnetd_var_run_t type, if you want to  store  the
259       telnetd files under the /run or /var/run directory.
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262
263       Note:  File context can be temporarily modified with the chcon command.
264       If you want to permanently change the file context you need to use  the
265       semanage fcontext command.  This will modify the SELinux labeling data‐
266       base.  You will need to use restorecon to apply the labels.
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COMMANDS

270       semanage fcontext can also be used to manipulate default  file  context
271       mappings.
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273       semanage  permissive  can  also  be used to manipulate whether or not a
274       process type is permissive.
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276       semanage module can also be used to enable/disable/install/remove  pol‐
277       icy modules.
278
279       semanage port can also be used to manipulate the port definitions
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281       semanage boolean can also be used to manipulate the booleans
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283
284       system-config-selinux is a GUI tool available to customize SELinux pol‐
285       icy settings.
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AUTHOR

289       This manual page was auto-generated using sepolicy manpage .
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