mscan_selinux(8)

1mscan_selinux(8)             SELinux Policy mscan             mscan_selinux(8)
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NAME

6       mscan_selinux - Security Enhanced Linux Policy for the mscan processes
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DESCRIPTION

9       Security-Enhanced Linux secures the mscan processes via flexible manda‐
10       tory access control.
11
12       The mscan processes execute with the  mscan_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 mscan_t
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ENTRYPOINTS

23       The mscan_t SELinux type can be entered via the mscan_exec_t file type.
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25       The default entrypoint paths for the mscan_t domain are the following:
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27       /usr/sbin/MailScanner
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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       mscan policy is very flexible allowing users to setup their mscan  pro‐
37       cesses in as secure a method as possible.
38
39       The following process types are defined for mscan:
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41       mscan_t
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43       Note:  semanage  permissive  -a mscan_t can be used to make the process
44       type mscan_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.   mscan
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run mscan with the tightest access possible.
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56       If you want to allow users to resolve user passwd entries directly from
57       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
58       gin_nsswitch_use_ldap boolean. Disabled by default.
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60       setsebool -P authlogin_nsswitch_use_ldap 1
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64       If you want to allow all daemons to write corefiles to /, you must turn
65       on the daemons_dump_core boolean. Disabled by default.
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67       setsebool -P daemons_dump_core 1
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71       If  you  want  to enable cluster mode for daemons, you must turn on the
72       daemons_enable_cluster_mode boolean. Enabled by default.
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74       setsebool -P daemons_enable_cluster_mode 1
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78       If you want to allow all daemons to use tcp wrappers, you must turn  on
79       the daemons_use_tcp_wrapper boolean. Disabled by default.
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81       setsebool -P daemons_use_tcp_wrapper 1
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85       If  you  want to allow all daemons the ability to read/write terminals,
86       you must turn on the daemons_use_tty boolean. Disabled by default.
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88       setsebool -P daemons_use_tty 1
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92       If you want to deny any process from ptracing or  debugging  any  other
93       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
94       default.
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96       setsebool -P deny_ptrace 1
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100       If you want to allow any process  to  mmap  any  file  on  system  with
101       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
102       ean. Enabled by default.
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104       setsebool -P domain_can_mmap_files 1
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108       If you want to allow all domains write to kmsg_device, while kernel  is
109       executed  with  systemd.log_target=kmsg parameter, you must turn on the
110       domain_can_write_kmsg boolean. Disabled by default.
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112       setsebool -P domain_can_write_kmsg 1
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116       If you want to allow all domains to use other domains file descriptors,
117       you must turn on the domain_fd_use boolean. Enabled by default.
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119       setsebool -P domain_fd_use 1
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122
123       If  you  want to allow all domains to have the kernel load modules, you
124       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
125       default.
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127       setsebool -P domain_kernel_load_modules 1
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130
131       If you want to allow all domains to execute in fips_mode, you must turn
132       on the fips_mode boolean. Enabled by default.
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134       setsebool -P fips_mode 1
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138       If you want to enable reading of urandom for all domains, you must turn
139       on the global_ssp boolean. Disabled by default.
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141       setsebool -P global_ssp 1
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145       If  you  want  to allow confined applications to run with kerberos, you
146       must turn on the kerberos_enabled boolean. Enabled by default.
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148       setsebool -P kerberos_enabled 1
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152       If you want to allow system to run with  NIS,  you  must  turn  on  the
153       nis_enabled boolean. Disabled by default.
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155       setsebool -P nis_enabled 1
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159       If  you  want to allow confined applications to use nscd shared memory,
160       you must turn on the nscd_use_shm boolean. Disabled by default.
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162       setsebool -P nscd_use_shm 1
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MANAGED FILES

167       The SELinux process type mscan_t can manage files labeled with the fol‐
168       lowing  file  types.   The paths listed are the default paths for these
169       file types.  Note the processes UID still need to have DAC permissions.
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171       antivirus_var_run_t
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173            /var/run/clamd.*
174            /var/run/clamav.*
175            /var/run/amavis(d)?(/.*)?
176            /var/run/amavis(d)?/clamd.pid
177            /var/run/amavisd-snmp-subagent.pid
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179       cluster_conf_t
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181            /etc/cluster(/.*)?
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183       cluster_var_lib_t
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185            /var/lib/pcsd(/.*)?
186            /var/lib/cluster(/.*)?
187            /var/lib/openais(/.*)?
188            /var/lib/pengine(/.*)?
189            /var/lib/corosync(/.*)?
190            /usr/lib/heartbeat(/.*)?
191            /var/lib/heartbeat(/.*)?
192            /var/lib/pacemaker(/.*)?
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194       cluster_var_run_t
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196            /var/run/crm(/.*)?
197            /var/run/cman_.*
198            /var/run/rsctmp(/.*)?
199            /var/run/aisexec.*
200            /var/run/heartbeat(/.*)?
201            /var/run/corosync-qnetd(/.*)?
202            /var/run/corosync-qdevice(/.*)?
203            /var/run/cpglockd.pid
204            /var/run/corosync.pid
205            /var/run/rgmanager.pid
206            /var/run/cluster/rgmanager.sk
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208       mqueue_spool_t
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210            /var/spool/(client)?mqueue(/.*)?
211            /var/spool/mqueue.in(/.*)?
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213       mscan_spool_t
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215            /var/spool/MailScanner(/.*)?
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217       mscan_tmp_t
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220       mscan_var_run_t
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222            /var/run/MailScanner.pid
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224       root_t
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226            /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
227            /
228            /initrd
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FILE CONTEXTS

232       SELinux requires files to have an extended attribute to define the file
233       type.
234
235       You can see the context of a file using the -Z option to ls
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237       Policy  governs  the  access  confined  processes  have to these files.
238       SELinux mscan policy is very flexible allowing  users  to  setup  their
239       mscan processes in as secure a method as possible.
240
241       STANDARD FILE CONTEXT
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243       SELinux  defines the file context types for the mscan, if you wanted to
244       store files with these types in a diffent paths, you  need  to  execute
245       the  semanage  command  to  sepecify  alternate  labeling  and then use
246       restorecon to put the labels on disk.
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248       semanage fcontext -a -t mscan_var_run_t '/srv/mymscan_content(/.*)?'
249       restorecon -R -v /srv/mymscan_content
250
251       Note: SELinux often uses regular expressions  to  specify  labels  that
252       match multiple files.
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254       The following file types are defined for mscan:
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258       mscan_etc_t
259
260       - Set files with the mscan_etc_t type, if you want to store mscan files
261       in the /etc directories.
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263
264       Paths:
265            /etc/MailScanner(/.*)?,  /etc/sysconfig/MailScanner,  /etc/syscon‐
266            fig/update_spamassassin
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268
269       mscan_exec_t
270
271       -  Set  files  with the mscan_exec_t type, if you want to transition an
272       executable to the mscan_t domain.
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276       mscan_initrc_exec_t
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278       - Set files with the mscan_initrc_exec_t type, if you want  to  transi‐
279       tion an executable to the mscan_initrc_t domain.
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283       mscan_spool_t
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285       - Set files with the mscan_spool_t type, if you want to store the mscan
286       files under the /var/spool directory.
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290       mscan_tmp_t
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292       - Set files with the mscan_tmp_t type, if you want to store mscan  tem‐
293       porary files in the /tmp directories.
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297       mscan_var_run_t
298
299       -  Set  files  with  the mscan_var_run_t type, if you want to store the
300       mscan files under the /run or /var/run directory.
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304       Note: File context can be temporarily modified with the chcon  command.
305       If  you want to permanently change the file context you need to use the
306       semanage fcontext command.  This will modify the SELinux labeling data‐
307       base.  You will need to use restorecon to apply the labels.
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COMMANDS

311       semanage  fcontext  can also be used to manipulate default file context
312       mappings.
313
314       semanage permissive can also be used to manipulate  whether  or  not  a
315       process type is permissive.
316
317       semanage  module can also be used to enable/disable/install/remove pol‐
318       icy modules.
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320       semanage boolean can also be used to manipulate the booleans
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322
323       system-config-selinux is a GUI tool available to customize SELinux pol‐
324       icy settings.
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AUTHOR

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