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<samba:parameter name="hosts allow"
context="S"
type="list"
basic="1" advanced="1" print="1" developer="1"
xmlns:samba="http://samba.org/common">
<synonym>allow hosts</synonym>
<description>
<para>A synonym for this parameter is <parameter moreinfo="none">allow
hosts</parameter>.</para>
<para>This parameter is a comma, space, or tab delimited
set of hosts which are permitted to access a service.</para>
<para>If specified in the [global] section then it will
apply to all services, regardless of whether the individual
service has a different setting.</para>
<para>You can specify the hosts by name or IP number. For
example, you could restrict access to only the hosts on a
Class C subnet with something like <command moreinfo="none">allow hosts = 150.203.5.
</command>. The full syntax of the list is described in the man
page <filename moreinfo="none">hosts_access(5)</filename>. Note that this man
page may not be present on your system, so a brief description will
be given here also.</para>
<para>Note that the localhost address 127.0.0.1 will always
be allowed access unless specifically denied by a <link linkend="HOSTSDENY">
<parameter moreinfo="none">hosts deny</parameter></link> option.</para>
<para>You can also specify hosts by network/netmask pairs and
by netgroup names if your system supports netgroups. The
<emphasis>EXCEPT</emphasis> keyword can also be used to limit a
wildcard list. The following examples may provide some help:</para>
<para>Example 1: allow all IPs in 150.203.*.*; except one</para>
<para><command moreinfo="none">hosts allow = 150.203. EXCEPT 150.203.6.66</command></para>
<para>Example 2: allow hosts that match the given network/netmask</para>
<para><command moreinfo="none">hosts allow = 150.203.15.0/255.255.255.0</command></para>
<para>Example 3: allow a couple of hosts</para>
<para><command moreinfo="none">hosts allow = lapland, arvidsjaur</command></para>
<para>Example 4: allow only hosts in NIS netgroup "foonet", but
deny access from one particular host</para>
<para><command moreinfo="none">hosts allow = @foonet</command></para>
<para><command moreinfo="none">hosts deny = pirate</command></para>
<note><para>Note that access still requires suitable user-level passwords.</para></note>
<para>See <citerefentry><refentrytitle>testparm</refentrytitle>
<manvolnum>1</manvolnum></citerefentry> for a way of testing your host access
to see if it does what you expect.</para>
</description>
<value type="example">150.203.5. myhost.mynet.edu.au</value>
<value type="default"><comment>none (i.e., all hosts permitted access)</comment></value>
</samba:parameter>
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