iptables_selinux(8)

1iptables_selinux(8)         SELinux Policy iptables        iptables_selinux(8)
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NAME

6       iptables_selinux - Security Enhanced Linux Policy for the iptables pro‐
7       cesses
8

DESCRIPTION

10       Security-Enhanced Linux secures the  iptables  processes  via  flexible
11       mandatory access control.
12
13       The  iptables  processes  execute with the iptables_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
17       For example:
18
19       ps -eZ | grep iptables_t
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21
22

ENTRYPOINTS

24       The iptables_t SELinux type can be entered via the iptables_exec_t file
25       type.
26
27       The default entrypoint paths for the iptables_t domain are the  follow‐
28       ing:
29
30       /sbin/ip6?tables.*,     /sbin/ip6?tables-multi.*,     /sbin/ip6?tables-
31       restore.*,    /usr/sbin/ip6?tables.*,     /usr/sbin/ip6?tables-multi.*,
32       /usr/sbin/ip6?tables-restore.*, /sbin/ipchains.*, /usr/sbin/ipchains.*,
33       /usr/libexec/iptables/iptables.init,                 /usr/libexec/ipta‐
34       bles/ip6tables.init,    /sbin/ipset,   /sbin/ipvsadm,   /sbin/ebtables,
35       /sbin/arptables,          /usr/sbin/ipset,           /usr/sbin/ipvsadm,
36       /usr/libexec/ipset,  /sbin/ipvsadm-save, /usr/sbin/ebtables, /sbin/xta‐
37       bles-multi, /usr/sbin/arptables, /usr/sbin/conntrack,  /sbin/arptables-
38       save, /sbin/ipvsadm-restore, /sbin/ebtables-restore, /usr/sbin/ipvsadm-
39       save,         /sbin/arptables-restore,         /usr/sbin/xtables-multi,
40       /usr/sbin/ipvsadm-restore, /usr/sbin/ebtables-restore
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PROCESS TYPES

43       SELinux defines process types (domains) for each process running on the
44       system
45
46       You can see the context of a process using the -Z option to ps
47
48       Policy governs the access confined processes have  to  files.   SELinux
49       iptables policy is very flexible allowing users to setup their iptables
50       processes in as secure a method as possible.
51
52       The following process types are defined for iptables:
53
54       iptables_t
55
56       Note: semanage permissive -a iptables_t can be used to make the process
57       type  iptables_t permissive. SELinux does not deny access to permissive
58       process types, but the AVC (SELinux denials) messages are still  gener‐
59       ated.
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61

BOOLEANS

63       SELinux  policy  is customizable based on least access required.  ipta‐
64       bles policy is extremely flexible and has several booleans  that  allow
65       you  to manipulate the policy and run iptables with the tightest access
66       possible.
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69
70       If you want to allow users to resolve user passwd entries directly from
71       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
72       gin_nsswitch_use_ldap boolean. Disabled by default.
73
74       setsebool -P authlogin_nsswitch_use_ldap 1
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76
77
78       If you want to allow all daemons the ability to  read/write  terminals,
79       you must turn on the daemons_use_tty boolean. Disabled by default.
80
81       setsebool -P daemons_use_tty 1
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83
84
85       If  you  want  to deny any process from ptracing or debugging any other
86       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
87       default.
88
89       setsebool -P deny_ptrace 1
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91
92
93       If you want to allow dhcpc client applications to execute iptables com‐
94       mands, you must turn on the dhcpc_exec_iptables  boolean.  Disabled  by
95       default.
96
97       setsebool -P dhcpc_exec_iptables 1
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100
101       If  you  want  to  allow  any  process  to mmap any file on system with
102       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
103       ean. Enabled by default.
104
105       setsebool -P domain_can_mmap_files 1
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107
108
109       If  you want to allow all domains write to kmsg_device, while kernel is
110       executed with systemd.log_target=kmsg parameter, you must turn  on  the
111       domain_can_write_kmsg boolean. Disabled by default.
112
113       setsebool -P domain_can_write_kmsg 1
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117       If you want to allow all domains to use other domains file descriptors,
118       you must turn on the domain_fd_use boolean. Enabled by default.
119
120       setsebool -P domain_fd_use 1
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122
123
124       If you want to allow all domains to have the kernel load  modules,  you
125       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
126       default.
127
128       setsebool -P domain_kernel_load_modules 1
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130
131
132       If you want to allow all domains to execute in fips_mode, you must turn
133       on the fips_mode boolean. Enabled by default.
134
135       setsebool -P fips_mode 1
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137
138
139       If you want to enable reading of urandom for all domains, you must turn
140       on the global_ssp boolean. Disabled by default.
141
142       setsebool -P global_ssp 1
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144
145
146       If you want to allow confined applications to run  with  kerberos,  you
147       must turn on the kerberos_enabled boolean. Enabled by default.
148
149       setsebool -P kerberos_enabled 1
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151
152
153       If  you  want  to  allow  system  to run with NIS, you must turn on the
154       nis_enabled boolean. Disabled by default.
155
156       setsebool -P nis_enabled 1
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159
160       If you want to allow confined applications to use nscd  shared  memory,
161       you must turn on the nscd_use_shm boolean. Disabled by default.
162
163       setsebool -P nscd_use_shm 1
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166

MANAGED FILES

168       The  SELinux  process type iptables_t can manage files labeled with the
169       following file types.  The paths listed are the default paths for these
170       file types.  Note the processes UID still need to have DAC permissions.
171
172       etc_runtime_t
173
174            /[^/]+
175            /etc/mtab.*
176            /etc/blkid(/.*)?
177            /etc/nologin.*
178            /etc/.fstab.hal..+
179            /halt
180            /fastboot
181            /poweroff
182            /etc/cmtab
183            /forcefsck
184            /.autofsck
185            /.suspended
186            /fsckoptions
187            /var/.updated
188            /etc/.updated
189            /.autorelabel
190            /etc/securetty
191            /etc/nohotplug
192            /etc/killpower
193            /etc/ioctl.save
194            /etc/fstab.REVOKE
195            /etc/network/ifstate
196            /etc/sysconfig/hwconf
197            /etc/ptal/ptal-printd-like
198            /etc/sysconfig/iptables.save
199            /etc/xorg.conf.d/00-system-setup-keyboard.conf
200            /etc/X11/xorg.conf.d/00-system-setup-keyboard.conf
201
202       initrc_tmp_t
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204
205       iptables_lock_t
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207            /var/lock/subsys/iptables
208            /var/lock/subsys/ip6tables
209
210       iptables_tmp_t
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212
213       iptables_var_lib_t
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215            /var/lib/ebtables(/.*)?
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217       iptables_var_run_t
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219            /var/run/xtables.*
220            /var/run/ebtables.*
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222       psad_tmp_t
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224
225       psad_var_log_t
226
227            /var/log/psad(/.*)?
228
229       shorewall_var_lib_t
230
231            /var/lib/shorewall(/.*)?
232            /var/lib/shorewall6(/.*)?
233            /var/lib/shorewall-lite(/.*)?
234
235       system_conf_t
236
237            /ostree/repo(/.*)?
238            /etc/yum.repos.d(/.*)?
239            /etc/sysctl.conf(.old)?
240            /etc/sysconfig/ip6?tables.*
241            /etc/ostree/remotes.d(/.*)?
242            /etc/sysconfig/ipvsadm.*
243            /etc/sysconfig/ebtables.*
244            /etc/sysconfig/system-config-firewall.*
245            /ostree/deploy/rhel-atomic-host/deploy(/.*)?
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247

FILE CONTEXTS

249       SELinux requires files to have an extended attribute to define the file
250       type.
251
252       You can see the context of a file using the -Z option to ls
253
254       Policy governs the access  confined  processes  have  to  these  files.
255       SELinux  iptables policy is very flexible allowing users to setup their
256       iptables processes in as secure a method as possible.
257
258       STANDARD FILE CONTEXT
259
260       SELinux defines the file context types for the iptables, if you  wanted
261       to store files with these types in a diffent paths, you need to execute
262       the semanage command  to  sepecify  alternate  labeling  and  then  use
263       restorecon to put the labels on disk.
264
265       semanage   fcontext   -a  -t  iptables_var_run_t  '/srv/myiptables_con‐
266       tent(/.*)?'
267       restorecon -R -v /srv/myiptables_content
268
269       Note: SELinux often uses regular expressions  to  specify  labels  that
270       match multiple files.
271
272       The following file types are defined for iptables:
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275
276       iptables_exec_t
277
278       - Set files with the iptables_exec_t type, if you want to transition an
279       executable to the iptables_t domain.
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281
282       Paths:
283            /sbin/ip6?tables.*,  /sbin/ip6?tables-multi.*,   /sbin/ip6?tables-
284            restore.*,  /usr/sbin/ip6?tables.*,  /usr/sbin/ip6?tables-multi.*,
285            /usr/sbin/ip6?tables-restore.*,                  /sbin/ipchains.*,
286            /usr/sbin/ipchains.*,         /usr/libexec/iptables/iptables.init,
287            /usr/libexec/iptables/ip6tables.init, /sbin/ipset,  /sbin/ipvsadm,
288            /sbin/ebtables,          /sbin/arptables,         /usr/sbin/ipset,
289            /usr/sbin/ipvsadm,     /usr/libexec/ipset,     /sbin/ipvsadm-save,
290            /usr/sbin/ebtables,    /sbin/xtables-multi,   /usr/sbin/arptables,
291            /usr/sbin/conntrack, /sbin/arptables-save,  /sbin/ipvsadm-restore,
292            /sbin/ebtables-restore,  /usr/sbin/ipvsadm-save,  /sbin/arptables-
293            restore,    /usr/sbin/xtables-multi,    /usr/sbin/ipvsadm-restore,
294            /usr/sbin/ebtables-restore
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296
297       iptables_initrc_exec_t
298
299       -  Set files with the iptables_initrc_exec_t type, if you want to tran‐
300       sition an executable to the iptables_initrc_t domain.
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302
303       Paths:
304            /etc/rc.d/init.d/ip6?tables, /etc/rc.d/init.d/ebtables
305
306
307       iptables_lock_t
308
309       - Set files with the iptables_lock_t type, if you  want  to  treat  the
310       files as iptables lock data, stored under the /var/lock directory
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312
313       Paths:
314            /var/lock/subsys/iptables, /var/lock/subsys/ip6tables
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316
317       iptables_tmp_t
318
319       - Set files with the iptables_tmp_t type, if you want to store iptables
320       temporary files in the /tmp directories.
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323
324       iptables_unit_file_t
325
326       - Set files with the iptables_unit_file_t type, if you  want  to  treat
327       the files as iptables unit content.
328
329
330       Paths:
331            /usr/lib/systemd/system/ppp.*,    /usr/lib/systemd/system/ipset.*,
332            /usr/lib/systemd/system/vsftpd.*,            /usr/lib/systemd/sys‐
333            tem/proftpd.*,  /usr/lib/systemd/system/iptables.*,  /usr/lib/sys‐
334            temd/system/arptables.*, /usr/lib/systemd/system/ip6tables.*
335
336
337       iptables_var_lib_t
338
339       - Set files with the iptables_var_lib_t type, if you want to store  the
340       iptables files under the /var/lib directory.
341
342
343
344       iptables_var_run_t
345
346       -  Set files with the iptables_var_run_t type, if you want to store the
347       iptables files under the /run or /var/run directory.
348
349
350       Paths:
351            /var/run/xtables.*, /var/run/ebtables.*
352
353
354       Note: File context can be temporarily modified with the chcon  command.
355       If  you want to permanently change the file context you need to use the
356       semanage fcontext command.  This will modify the SELinux labeling data‐
357       base.  You will need to use restorecon to apply the labels.
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359

COMMANDS

361       semanage  fcontext  can also be used to manipulate default file context
362       mappings.
363
364       semanage permissive can also be used to manipulate  whether  or  not  a
365       process type is permissive.
366
367       semanage  module can also be used to enable/disable/install/remove pol‐
368       icy modules.
369
370       semanage boolean can also be used to manipulate the booleans
371
372
373       system-config-selinux is a GUI tool available to customize SELinux pol‐
374       icy settings.
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376

AUTHOR

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