SELinux/samba
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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 |
| − | + | To make this change permanent (survive a relabel), use the semanage | |
| − | + | command to add the change to file context configuration: | |
| − | /etc/selinux/POLICYTYPE/ | + | 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/ | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | If you | + | SHARING FILES |
| − | + | If you want to share files with multiple domains (Apache, FTP, rsync, | |
| − | boolean. | + | 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 | + | 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. | |
| − | system-config- | + | setsebool -P use_samba_home_dirs 1 |
| − | SELinux | + | |
| + | system-config-selinux is a GUI tool available to customize SELinux pol‐ | ||
| + | icy 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 17 Jan 2005 samba_selinux(8) | dwalsh@redhat.com 17 Jan 2005 samba_selinux(8) | ||
| + | |||
</pre> | </pre> | ||
Revision as of 21:38, 22 November 2011
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 17 Jan 2005 samba_selinux(8)
