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+<samba:parameter name="bind interfaces only"
+ type="boolean"
+ context="G"
+ xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+<description>
+ <para>This global parameter allows the Samba admin
+ to limit what interfaces on a machine will serve SMB requests. It
+ affects file service <citerefentry><refentrytitle>smbd</refentrytitle>
+ <manvolnum>8</manvolnum></citerefentry> and name service <citerefentry><refentrytitle>nmbd</refentrytitle>
+ <manvolnum>8</manvolnum></citerefentry> in a slightly different ways.</para>
+
+ <para>
+ For name service it causes <command moreinfo="none">nmbd</command> to bind to ports 137 and 138 on the
+ interfaces listed in the <smbconfoption name="interfaces"/> parameter. <command moreinfo="none">nmbd</command>
+ also binds to the &quot;all addresses&quot; interface (0.0.0.0) on ports 137 and 138 for the purposes of
+ reading broadcast messages. If this option is not set then <command moreinfo="none">nmbd</command> will
+ service name requests on all of these sockets. If <smbconfoption name="bind interfaces only"/> is set then
+ <command moreinfo="none">nmbd</command> will check the source address of any packets coming in on the
+ broadcast sockets and discard any that don't match the broadcast addresses of the interfaces in the
+ <smbconfoption name="interfaces"/> parameter list. As unicast packets are received on the other sockets it
+ allows <command moreinfo="none">nmbd</command> to refuse to serve names to machines that send packets that
+ arrive through any interfaces not listed in the <smbconfoption name="interfaces"/> list. IP Source address
+ spoofing does defeat this simple check, however, so it must not be used seriously as a security feature for
+ <command moreinfo="none">nmbd</command>.
+ </para>
+
+ <para>
+ For file service it causes <citerefentry><refentrytitle>smbd</refentrytitle>
+ <manvolnum>8</manvolnum></citerefentry> to bind only to the interface list given in the <smbconfoption
+ name="interfaces"/> parameter. This restricts the networks that <command moreinfo="none">smbd</command> will
+ serve, to packets coming in on those interfaces. Note that you should not use this parameter for machines that
+ are serving PPP or other intermittent or non-broadcast network interfaces as it will not cope with
+ non-permanent interfaces.
+ </para>
+
+ <para>
+ If <smbconfoption name="bind interfaces only"/> is set and the network address
+ <emphasis>127.0.0.1</emphasis> is not added to the <smbconfoption name="interfaces"/> parameter list
+ <citerefentry><refentrytitle>smbpasswd</refentrytitle> <manvolnum>8</manvolnum></citerefentry> may not
+ work as expected due to the reasons covered below.
+ </para>
+
+ <para>
+ To change a users SMB password, the <command moreinfo="none">smbpasswd</command> by default connects to the
+ <emphasis>localhost - 127.0.0.1</emphasis> address as an SMB client to issue the password change request. If
+ <smbconfoption name="bind interfaces only"/> is set then unless the network address
+ <emphasis>127.0.0.1</emphasis> is added to the <smbconfoption name="interfaces"/> parameter list then <command
+ moreinfo="none"> smbpasswd</command> will fail to connect in it's default mode. <command
+ moreinfo="none">smbpasswd</command> can be forced to use the primary IP interface of the local host by using
+ its <citerefentry><refentrytitle>smbpasswd</refentrytitle> <manvolnum>8</manvolnum></citerefentry> <parameter
+ moreinfo="none">-r <replaceable>remote machine</replaceable></parameter> parameter, with <replaceable>remote
+ machine</replaceable> set to the IP name of the primary interface of the local host.
+ </para>
+
+</description>
+<value type="default">no</value>
+</samba:parameter>