squid_selinux(8)

1squid_selinux(8)             SELinux Policy squid             squid_selinux(8)
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NAME

6       squid_selinux - Security Enhanced Linux Policy for the squid processes
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DESCRIPTION

9       Security-Enhanced Linux secures the squid processes via flexible manda‐
10       tory access control.
11
12       The squid processes execute with the  squid_t  SELinux  type.  You  can
13       check  if  you have these processes running by executing the ps command
14       with the -Z qualifier.
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16       For example:
17
18       ps -eZ | grep squid_t
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20
21

ENTRYPOINTS

23       The squid_t SELinux type can be entered via the squid_exec_t file type.
24
25       The default entrypoint paths for the squid_t domain are the following:
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27       /usr/sbin/squid, /usr/libexec/squid/cache_swap.sh
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PROCESS TYPES

30       SELinux defines process types (domains) for each process running on the
31       system
32
33       You can see the context of a process using the -Z option to ps
34
35       Policy  governs  the  access confined processes have to files.  SELinux
36       squid policy is very flexible allowing users to setup their squid  pro‐
37       cesses in as secure a method as possible.
38
39       The following process types are defined for squid:
40
41       squid_t, squid_cron_t, squid_script_t
42
43       Note:  semanage  permissive  -a squid_t can be used to make the process
44       type squid_t permissive. SELinux does not  deny  access  to  permissive
45       process  types, but the AVC (SELinux denials) messages are still gener‐
46       ated.
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48

BOOLEANS

50       SELinux policy is customizable based on least access  required.   squid
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run squid with the tightest access possible.
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54
55
56       If you want to determine whether squid can connect to  all  TCP  ports,
57       you must turn on the squid_connect_any boolean. Enabled by default.
58
59       setsebool -P squid_connect_any 1
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62
63       If  you want to determine whether squid can run as a transparent proxy,
64       you must turn on the squid_use_tproxy boolean. Disabled by default.
65
66       setsebool -P squid_use_tproxy 1
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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 to write corefiles to /, you must turn
79       on the daemons_dump_core boolean. Disabled by default.
80
81       setsebool -P daemons_dump_core 1
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84
85       If  you  want  to enable cluster mode for daemons, you must turn on the
86       daemons_enable_cluster_mode boolean. Enabled by default.
87
88       setsebool -P daemons_enable_cluster_mode 1
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91
92       If you want to allow all daemons to use tcp wrappers, you must turn  on
93       the daemons_use_tcp_wrapper boolean. Disabled by default.
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95       setsebool -P daemons_use_tcp_wrapper 1
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98
99       If  you  want to allow all daemons the ability to read/write terminals,
100       you must turn on the daemons_use_tty boolean. Disabled by default.
101
102       setsebool -P daemons_use_tty 1
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104
105
106       If you want to deny any process from ptracing or  debugging  any  other
107       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
108       default.
109
110       setsebool -P deny_ptrace 1
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113
114       If you want to allow any process  to  mmap  any  file  on  system  with
115       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
116       ean. Enabled by default.
117
118       setsebool -P domain_can_mmap_files 1
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121
122       If you want to allow all domains write to kmsg_device, while kernel  is
123       executed  with  systemd.log_target=kmsg parameter, you must turn on the
124       domain_can_write_kmsg boolean. Disabled by default.
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126       setsebool -P domain_can_write_kmsg 1
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129
130       If you want to allow all domains to use other domains file descriptors,
131       you must turn on the domain_fd_use boolean. Enabled by default.
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133       setsebool -P domain_fd_use 1
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135
136
137       If  you  want to allow all domains to have the kernel load modules, you
138       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
139       default.
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141       setsebool -P domain_kernel_load_modules 1
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144
145       If you want to allow all domains to execute in fips_mode, you must turn
146       on the fips_mode boolean. Enabled by default.
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148       setsebool -P fips_mode 1
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151
152       If you want to enable reading of urandom for all domains, you must turn
153       on the global_ssp boolean. Disabled by default.
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155       setsebool -P global_ssp 1
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157
158
159       If  you  want  to allow confined applications to run with kerberos, you
160       must turn on the kerberos_enabled boolean. Enabled by default.
161
162       setsebool -P kerberos_enabled 1
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165
166       If you want to allow system to run with  NIS,  you  must  turn  on  the
167       nis_enabled boolean. Disabled by default.
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169       setsebool -P nis_enabled 1
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172
173       If  you  want to allow confined applications to use nscd shared memory,
174       you must turn on the nscd_use_shm boolean. Disabled by default.
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176       setsebool -P nscd_use_shm 1
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179

PORT TYPES

181       SELinux defines port types to represent TCP and UDP ports.
182
183       You can see the types associated with a port  by  using  the  following
184       command:
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186       semanage port -l
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188
189       Policy  governs  the  access  confined  processes  have to these ports.
190       SELinux squid policy is very flexible allowing  users  to  setup  their
191       squid processes in as secure a method as possible.
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193       The following port types are defined for squid:
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195
196       squid_port_t
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200       Default Defined Ports:
201                 tcp 3128,3401,4827
202                 udp 3401,4827
203

MANAGED FILES

205       The SELinux process type squid_t can manage files labeled with the fol‐
206       lowing file types.  The paths listed are the default  paths  for  these
207       file types.  Note the processes UID still need to have DAC permissions.
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209       cluster_conf_t
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211            /etc/cluster(/.*)?
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213       cluster_var_lib_t
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215            /var/lib/pcsd(/.*)?
216            /var/lib/cluster(/.*)?
217            /var/lib/openais(/.*)?
218            /var/lib/pengine(/.*)?
219            /var/lib/corosync(/.*)?
220            /usr/lib/heartbeat(/.*)?
221            /var/lib/heartbeat(/.*)?
222            /var/lib/pacemaker(/.*)?
223
224       cluster_var_run_t
225
226            /var/run/crm(/.*)?
227            /var/run/cman_.*
228            /var/run/rsctmp(/.*)?
229            /var/run/aisexec.*
230            /var/run/heartbeat(/.*)?
231            /var/run/corosync-qnetd(/.*)?
232            /var/run/corosync-qdevice(/.*)?
233            /var/run/cpglockd.pid
234            /var/run/corosync.pid
235            /var/run/rgmanager.pid
236            /var/run/cluster/rgmanager.sk
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238       faillog_t
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240            /var/log/btmp.*
241            /var/log/faillog.*
242            /var/log/tallylog.*
243            /var/run/faillock(/.*)?
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245       krb5_host_rcache_t
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247            /var/cache/krb5rcache(/.*)?
248            /var/tmp/nfs_0
249            /var/tmp/DNS_25
250            /var/tmp/host_0
251            /var/tmp/imap_0
252            /var/tmp/HTTP_23
253            /var/tmp/HTTP_48
254            /var/tmp/ldap_55
255            /var/tmp/ldap_487
256            /var/tmp/ldapmap1_0
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258       root_t
259
260            /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
261            /
262            /initrd
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264       security_t
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266            /selinux
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268       squid_cache_t
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270            /var/squidGuard(/.*)?
271            /var/lib/ssl_db(/.*)?
272            /var/lightsquid(/.*)?
273            /var/cache/squid(/.*)?
274            /var/spool/squid(/.*)?
275            /etc/squid/ssl_db(/.*)?
276
277       squid_log_t
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279            /var/log/squid(/.*)?
280            /var/log/squidGuard(/.*)?
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282       squid_tmp_t
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285       squid_tmpfs_t
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287
288       squid_var_run_t
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290            /var/run/squid.*
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FILE CONTEXTS

294       SELinux requires files to have an extended attribute to define the file
295       type.
296
297       You can see the context of a file using the -Z option to ls
298
299       Policy governs the access  confined  processes  have  to  these  files.
300       SELinux  squid  policy  is  very flexible allowing users to setup their
301       squid processes in as secure a method as possible.
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303       EQUIVALENCE DIRECTORIES
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305
306       squid policy stores data with multiple  different  file  context  types
307       under  the  /var/log/squid  directory.   If you would like to store the
308       data in a different directory you can use the semanage command to  cre‐
309       ate an equivalence mapping.  If you wanted to store this data under the
310       /srv dirctory you would execute the following command:
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312       semanage fcontext -a -e /var/log/squid /srv/squid
313       restorecon -R -v /srv/squid
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315       STANDARD FILE CONTEXT
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317       SELinux defines the file context types for the squid, if you wanted  to
318       store  files  with  these types in a diffent paths, you need to execute
319       the semanage command  to  sepecify  alternate  labeling  and  then  use
320       restorecon to put the labels on disk.
321
322       semanage fcontext -a -t squid_var_run_t '/srv/mysquid_content(/.*)?'
323       restorecon -R -v /srv/mysquid_content
324
325       Note:  SELinux  often  uses  regular expressions to specify labels that
326       match multiple files.
327
328       The following file types are defined for squid:
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331
332       squid_cache_t
333
334       - Set files with the squid_cache_t type, if you want to store the files
335       under the /var/cache directory.
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337
338       Paths:
339            /var/squidGuard(/.*)?,      /var/lib/ssl_db(/.*)?,     /var/light‐
340            squid(/.*)?,    /var/cache/squid(/.*)?,    /var/spool/squid(/.*)?,
341            /etc/squid/ssl_db(/.*)?
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343
344       squid_conf_t
345
346       -  Set files with the squid_conf_t type, if you want to treat the files
347       as squid configuration data, usually stored under the /etc directory.
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349
350       Paths:
351            /etc/squid(/.*)?, /etc/lightsquid(/.*)?, /usr/share/squid(/.*)?
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353
354       squid_content_t
355
356       - Set files with the squid_content_t type, if you  want  to  treat  the
357       files as squid content.
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361       squid_cron_exec_t
362
363       -  Set files with the squid_cron_exec_t type, if you want to transition
364       an executable to the squid_cron_t domain.
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368       squid_exec_t
369
370       - Set files with the squid_exec_t type, if you want  to  transition  an
371       executable to the squid_t domain.
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373
374       Paths:
375            /usr/sbin/squid, /usr/libexec/squid/cache_swap.sh
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377
378       squid_htaccess_t
379
380       -  Set  files  with the squid_htaccess_t type, if you want to treat the
381       file as a squid access file.
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384
385       squid_initrc_exec_t
386
387       - Set files with the squid_initrc_exec_t type, if you want  to  transi‐
388       tion an executable to the squid_initrc_t domain.
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390
391
392       squid_log_t
393
394       - Set files with the squid_log_t type, if you want to treat the data as
395       squid log data, usually stored under the /var/log directory.
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397
398       Paths:
399            /var/log/squid(/.*)?, /var/log/squidGuard(/.*)?
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401
402       squid_ra_content_t
403
404       - Set files with the squid_ra_content_t type, if you want to treat  the
405       files as squid  read/append content.
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407
408
409       squid_rw_content_t
410
411       -  Set files with the squid_rw_content_t type, if you want to treat the
412       files as squid read/write content.
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414
415
416       squid_script_exec_t
417
418       - Set files with the squid_script_exec_t type, if you want  to  transi‐
419       tion an executable to the squid_script_t domain.
420
421
422       Paths:
423            /usr/share/lightsquid/cgi(/.*)?, /usr/lib/squid/cachemgr.cgi
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425
426       squid_tmp_t
427
428       -  Set files with the squid_tmp_t type, if you want to store squid tem‐
429       porary files in the /tmp directories.
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431
432
433       squid_tmpfs_t
434
435       - Set files with the squid_tmpfs_t type, if you  want  to  store  squid
436       files on a tmpfs file system.
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438
439
440       squid_var_run_t
441
442       -  Set  files  with  the squid_var_run_t type, if you want to store the
443       squid files under the /run or /var/run directory.
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445
446
447       Note: File context can be temporarily modified with the chcon  command.
448       If  you want to permanently change the file context you need to use the
449       semanage fcontext command.  This will modify the SELinux labeling data‐
450       base.  You will need to use restorecon to apply the labels.
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452

COMMANDS

454       semanage  fcontext  can also be used to manipulate default file context
455       mappings.
456
457       semanage permissive can also be used to manipulate  whether  or  not  a
458       process type is permissive.
459
460       semanage  module can also be used to enable/disable/install/remove pol‐
461       icy modules.
462
463       semanage port can also be used to manipulate the port definitions
464
465       semanage boolean can also be used to manipulate the booleans
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467
468       system-config-selinux is a GUI tool available to customize SELinux pol‐
469       icy settings.
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471

AUTHOR

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