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NAME
NAME
samba_selinux - Security Enhanced Linux Policy for Samba
      samba_selinux - Security Enhanced Linux Policy for Samba


DESCRIPTION
DESCRIPTION
Security-Enhanced Linux secures the Samba server via flexible mandatory
      Security-Enhanced Linux secures the Samba server via flexible mandatory
access control.
      access control.


FILE_CONTEXTS
FILE_CONTEXTS
SELinux requires files to have an extended attribute to define the file
      SELinux requires files to have an extended attribute to define the file
type.  Policy  governs the access daemons have to these files.  If you
      type.  Policy  governs the access daemons have to these files.  If you
want to share files other than home directories, those  files  must  be
      want to share files other than home directories, those  files  must  be
labeled samba_share_t.  So if you created a special directory /var/eng,
      labeled samba_share_t.  So if you created a special directory /var/eng,
you would need to label the directory with the chcon tool.
      you would need to label the directory with the chcon tool.


chcon -t samba_share_t /var/eng
      chcon -t samba_share_t /var/eng


If you want to make this permanant, i.e. survive a  relabel,  you must
      To make this change permanent (survive a  relabel)use  the semanage
add an entry to the file_contexts.local file.
      command to add the change to file context configuration:


/etc/selinux/POLICYTYPE/contexts/files/file_contexts.local
      semanage fcontext -a -t samba_share_t "/var/eng(/.*)?"
/var/eng(/.*)? system_u:object_r:samba_share_t
      This  command  adds the following entry to /etc/selinux/POLICYTYPE/con‐
      texts/files/file_contexts.local:
 
      /var/eng(/.*)? system_u:object_r:samba_share_t:s0
 
      Run the restorecon command to apply the changes:
 
      restorecon -R -v /var/eng/


SHARING FILES
SHARING FILES
If you want to share files with multiple domains (Apache,  FTP,  rsync,
      If you want to share files with multiple domains (Apache,  FTP,  rsync,
Samba),  you can set a file context of public_content_t and public_con-
      Samba),  you can set a file context of public_content_t and public_con‐
tent_rw_t.  These context allow any of the above domains  to  read  the
      tent_rw_t.  These context allow any of the above domains  to  read  the
content.  If  you want a particular domain to write to the public_con-
      content.  If  you want a particular domain to write to the public_con‐
tent_rw_t  domain,  you  must  set  the    appropriate    boolean.
      tent_rw_t  domain,  you  must  set  the    appropriate    boolean.
allow_DOMAIN_anon_write.  So for samba you would execute:
      allow_DOMAIN_anon_write.  So for samba you would execute:


setsebool -P allow_smbd_anon_write=1
      setsebool -P allow_smbd_anon_write=1


BOOLEANS
BOOLEANS
SELinux  policy  is customizable based on least access required.  So by
      SELinux  policy  is customizable based on least access required.  So by
default SElinux policy turns off SELinux sharing  of  home  directories
      default SELinux policy turns off SELinux sharing  of  home  directories
and the use of Samba shares from a remote machine as a home directory.
      and the use of Samba shares from a remote machine as a home directory.


If you are setting up this machine as a Samba server and wish to share
      If you are setting up this machine as a Samba server and wish to share
the home directories, you need to set the samba_enable_home_dirs
      the home directories, you need to set the samba_enable_home_dirs bool‐
boolean.
      ean.


setsebool -P samba_enable_home_dirs 1
              setsebool -P samba_enable_home_dirs 1


If you want to use a remote Samba server for the home directories on
      If you want to use a remote Samba server for the home directories on
this machine, you must set the use_samba_home_dirs boolean.
      this machine, you must set the use_samba_home_dirs boolean.


setsebool -P use_samba_home_dirs 1
              setsebool -P use_samba_home_dirs 1


You can disable SELinux protection for the samba daemon by executing:
      system-config-selinux is a GUI tool available to customize SELinux pol‐
 
      icy settings.
setsebool -P smbd_disable_trans 1
service smb restart
 
system-config-securitylevel  is a GUI tool available to customize
SELinux policy settings.


AUTHOR
AUTHOR
This manual page was written by Dan Walsh <dwalsh@redhat.com>.
      This manual page was written by Dan Walsh <dwalsh@redhat.com>.


SEE ALSO
SEE ALSO
selinux(8), samba(7), chcon(1), setsebool(8)
      selinux(8), samba(7), chcon(1), setsebool(8), semanage(8)
 
dwalsh@redhat.com                22 Nov 2011                samba_selinux(8)


dwalsh@redhat.com                17 Jan 2005                samba_selinux(8)


</pre>
</pre>
[[Category:SELinux]]

Latest revision as of 19:01, 15 August 2015

samba_selinux(8)      Samba Selinux Policy documentation      samba_selinux(8)

NAME
       samba_selinux - Security Enhanced Linux Policy for Samba

DESCRIPTION
       Security-Enhanced Linux secures the Samba server via flexible mandatory
       access control.

FILE_CONTEXTS
       SELinux requires files to have an extended attribute to define the file
       type.   Policy  governs the access daemons have to these files.  If you
       want to share files other than home directories, those  files  must  be
       labeled samba_share_t.  So if you created a special directory /var/eng,
       you would need to label the directory with the chcon tool.

       chcon -t samba_share_t /var/eng

       To make this change permanent (survive a  relabel),  use  the  semanage
       command to add the change to file context configuration:

       semanage fcontext -a -t samba_share_t "/var/eng(/.*)?"
       This  command  adds the following entry to /etc/selinux/POLICYTYPE/con‐
       texts/files/file_contexts.local:

       /var/eng(/.*)? system_u:object_r:samba_share_t:s0

       Run the restorecon command to apply the changes:

       restorecon -R -v /var/eng/

SHARING FILES
       If you want to share files with multiple domains (Apache,  FTP,  rsync,
       Samba),  you can set a file context of public_content_t and public_con‐
       tent_rw_t.  These context allow any of the above domains  to  read  the
       content.   If  you want a particular domain to write to the public_con‐
       tent_rw_t   domain,   you   must   set   the    appropriate    boolean.
       allow_DOMAIN_anon_write.  So for samba you would execute:

       setsebool -P allow_smbd_anon_write=1

BOOLEANS
       SELinux  policy  is customizable based on least access required.  So by
       default SELinux policy turns off SELinux sharing  of  home  directories
       and the use of Samba shares from a remote machine as a home directory.

       If  you are setting up this machine as a Samba server and wish to share
       the home directories, you need to set the samba_enable_home_dirs  bool‐
       ean.

              setsebool -P samba_enable_home_dirs 1

       If  you  want  to use a remote Samba server for the home directories on
       this machine, you must set the use_samba_home_dirs boolean.

              setsebool -P use_samba_home_dirs 1

       system-config-selinux is a GUI tool available to customize SELinux pol‐
       icy settings.

AUTHOR
       This manual page was written by Dan Walsh <dwalsh@redhat.com>.

SEE ALSO
       selinux(8), samba(7), chcon(1), setsebool(8), semanage(8)

dwalsh@redhat.com                 22 Nov 2011                 samba_selinux(8)