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 configura-
       tion:

       semanage fcontext -a -t samba_share_t "/var/eng(/.*)?"

       This command adds the following entry to /etc/selinux/POLICYTYPE/contexts/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_con-
       tent_t and public_content_rw_t.  These context allow any of the above domains to read the content.  If you want a partic-
       ular domain to write to the public_content_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 boolean.

              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 policy settings.


AUTHOR
       This manual page was written by Dan Walsh <dwalshATredhat.com>.


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



dwalshATredhat.com                                          17 Jan 2005                                          samba_selinux(8)