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.
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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:
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18       ps -eZ | grep squid_t
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ENTRYPOINTS

23       The squid_t SELinux type can be entered via the squid_exec_t file type.
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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
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33       You can see the context of a process using the -Z option to ps
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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:
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41       squid_t, squid_cron_t, squid_script_t
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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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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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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.
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59       setsebool -P squid_connect_any 1
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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.
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66       setsebool -P squid_use_tproxy 1
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70       If you want to allow all domains to execute in fips_mode, you must turn
71       on the fips_mode boolean. Enabled by default.
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73       setsebool -P fips_mode 1
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77       If  you  want  to allow confined applications to run with kerberos, you
78       must turn on the kerberos_enabled boolean. Enabled by default.
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80       setsebool -P kerberos_enabled 1
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PORT TYPES

85       SELinux defines port types to represent TCP and UDP ports.
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87       You can see the types associated with a port  by  using  the  following
88       command:
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90       semanage port -l
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93       Policy  governs  the  access  confined  processes  have to these ports.
94       SELinux squid policy is very flexible allowing  users  to  setup  their
95       squid processes in as secure a method as possible.
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97       The following port types are defined for squid:
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100       squid_port_t
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104       Default Defined Ports:
105                 tcp 3128,3401,4827
106                 udp 3401,4827
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MANAGED FILES

109       The SELinux process type squid_t can manage files labeled with the fol‐
110       lowing file types.  The paths listed are the default  paths  for  these
111       file types.  Note the processes UID still need to have DAC permissions.
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113       cluster_conf_t
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115            /etc/cluster(/.*)?
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117       cluster_var_lib_t
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119            /var/lib/pcsd(/.*)?
120            /var/lib/cluster(/.*)?
121            /var/lib/openais(/.*)?
122            /var/lib/pengine(/.*)?
123            /var/lib/corosync(/.*)?
124            /usr/lib/heartbeat(/.*)?
125            /var/lib/heartbeat(/.*)?
126            /var/lib/pacemaker(/.*)?
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128       cluster_var_run_t
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130            /var/run/crm(/.*)?
131            /var/run/cman_.*
132            /var/run/rsctmp(/.*)?
133            /var/run/aisexec.*
134            /var/run/heartbeat(/.*)?
135            /var/run/pcsd-ruby.socket
136            /var/run/corosync-qnetd(/.*)?
137            /var/run/corosync-qdevice(/.*)?
138            /var/run/corosync.pid
139            /var/run/cpglockd.pid
140            /var/run/rgmanager.pid
141            /var/run/cluster/rgmanager.sk
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143       faillog_t
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145            /var/log/btmp.*
146            /var/log/faillog.*
147            /var/log/tallylog.*
148            /var/run/faillock(/.*)?
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150       krb5_host_rcache_t
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152            /var/tmp/krb5_0.rcache2
153            /var/cache/krb5rcache(/.*)?
154            /var/tmp/nfs_0
155            /var/tmp/DNS_25
156            /var/tmp/host_0
157            /var/tmp/imap_0
158            /var/tmp/HTTP_23
159            /var/tmp/HTTP_48
160            /var/tmp/ldap_55
161            /var/tmp/ldap_487
162            /var/tmp/ldapmap1_0
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164       root_t
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166            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
167            /
168            /initrd
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170       security_t
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172            /selinux
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174       squid_cache_t
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176            /var/lib/ssl_db(/.*)?
177            /var/lightsquid(/.*)?
178            /var/squidGuard(/.*)?
179            /var/cache/squid(/.*)?
180            /var/spool/squid(/.*)?
181            /etc/squid/ssl_db(/.*)?
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183       squid_log_t
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185            /var/log/squid(/.*)?
186            /var/log/squidGuard(/.*)?
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188       squid_tmp_t
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191       squid_tmpfs_t
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193            /dev/shm/squid-*
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195       squid_var_run_t
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197            /var/run/squid.*
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FILE CONTEXTS

201       SELinux requires files to have an extended attribute to define the file
202       type.
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204       You can see the context of a file using the -Z option to ls
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206       Policy governs the access  confined  processes  have  to  these  files.
207       SELinux  squid  policy  is  very flexible allowing users to setup their
208       squid processes in as secure a method as possible.
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210       EQUIVALENCE DIRECTORIES
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212
213       squid policy stores data with multiple different file context types un‐
214       der  the /var/log/squid directory.  If you would like to store the data
215       in a different directory you can use the semanage command to create  an
216       equivalence  mapping.   If you wanted to store this data under the /srv
217       directory you would execute the following command:
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219       semanage fcontext -a -e /var/log/squid /srv/squid
220       restorecon -R -v /srv/squid
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222       STANDARD FILE CONTEXT
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224       SELinux defines the file context types for the squid, if you wanted  to
225       store  files  with  these types in a diffent paths, you need to execute
226       the semanage command to specify alternate labeling  and  then  use  re‐
227       storecon to put the labels on disk.
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229       semanage fcontext -a -t squid_ra_content_t '/srv/mysquid_content(/.*)?'
230       restorecon -R -v /srv/mysquid_content
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232       Note:  SELinux  often  uses  regular expressions to specify labels that
233       match multiple files.
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235       The following file types are defined for squid:
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239       squid_cache_t
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241       - Set files with the squid_cache_t type, if you want to store the files
242       under the /var/cache directory.
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245       Paths:
246            /var/lib/ssl_db(/.*)?,      /var/lightsquid(/.*)?,     /var/squid‐
247            Guard(/.*)?,    /var/cache/squid(/.*)?,    /var/spool/squid(/.*)?,
248            /etc/squid/ssl_db(/.*)?
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251       squid_conf_t
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253       -  Set files with the squid_conf_t type, if you want to treat the files
254       as squid configuration data, usually stored under the /etc directory.
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257       Paths:
258            /etc/squid(/.*)?, /etc/lightsquid(/.*)?, /usr/share/squid(/.*)?
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261       squid_content_t
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263       - Set files with the squid_content_t type, if you  want  to  treat  the
264       files as squid content.
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268       squid_cron_exec_t
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270       -  Set files with the squid_cron_exec_t type, if you want to transition
271       an executable to the squid_cron_t domain.
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275       squid_exec_t
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277       - Set files with the squid_exec_t type, if you want  to  transition  an
278       executable to the squid_t domain.
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281       Paths:
282            /usr/sbin/squid, /usr/libexec/squid/cache_swap.sh
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285       squid_htaccess_t
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287       -  Set  files  with the squid_htaccess_t type, if you want to treat the
288       file as a squid access file.
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292       squid_initrc_exec_t
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294       - Set files with the squid_initrc_exec_t type, if you want  to  transi‐
295       tion an executable to the squid_initrc_t domain.
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299       squid_log_t
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301       - Set files with the squid_log_t type, if you want to treat the data as
302       squid log data, usually stored under the /var/log directory.
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304
305       Paths:
306            /var/log/squid(/.*)?, /var/log/squidGuard(/.*)?
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308
309       squid_ra_content_t
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311       - Set files with the squid_ra_content_t type, if you want to treat  the
312       files as squid read/append content.
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316       squid_rw_content_t
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318       -  Set files with the squid_rw_content_t type, if you want to treat the
319       files as squid read/write content.
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323       squid_script_exec_t
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325       - Set files with the squid_script_exec_t type, if you want  to  transi‐
326       tion an executable to the squid_script_t domain.
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328
329       Paths:
330            /usr/share/lightsquid/cgi(/.*)?, /usr/lib/squid/cachemgr.cgi
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332
333       squid_tmp_t
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335       -  Set files with the squid_tmp_t type, if you want to store squid tem‐
336       porary files in the /tmp directories.
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340       squid_tmpfs_t
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342       - Set files with the squid_tmpfs_t type, if you  want  to  store  squid
343       files on a tmpfs file system.
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347       squid_var_run_t
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349       -  Set  files  with  the squid_var_run_t type, if you want to store the
350       squid files under the /run or /var/run directory.
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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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COMMANDS

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

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