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98.

sudo chgrp -R sysadmin /srv/samba/share/

99.

sudo setfacl -R -m g:qa:rx /srv/samba/share/

100.

The <application>setfacl</application> command above gives <emphasis>execute</emphasis> permissions to all files in the <filename>/srv/samba/share</filename> directory, which may or may not be desirable.

101.

A Windows client will show that the new file permissions are implemented. See the <application>acl</application> and <application>setfacl</application> man pages for more information on POSIX ACLs.

102.

Samba AppArmor Profile

103.

<phrase>Kubuntu</phrase> comes with the <application>AppArmor</application> security module, which provides mandatory access controls. The default AppArmor profile for Samba will need to be adapted to the proper configuration. For more details on using AppArmor, please refer to the<ulink url="https://help.ubuntu.com/community/AppArmor"> wiki</ulink>

104.

There are default AppArmor profiles for <filename>/usr/sbin/smbd</filename> and <filename>/usr/sbin/nmbd</filename>, the Samba daemon binaries, as part of the <application>apparmor-profiles</application> packages. To install the package, from a terminal prompt, enter:

105.

sudo apt-get install apparmor-profiles

106.

This package contains profiles for several other binaries.

107.

By default the profiles for <application>smbd</application> and <application>nmbd</application> are in <emphasis>complain</emphasis> mode, allowing Samba to work without modifying the profile, and only logging errors. To place the <application>smbd</application> profile into <emphasis>enforce</emphasis> mode, and have Samba work as expected, the profile will need to be modified to reflect any directories that are shared.