source: branches/samba-3.3.x/docs-xml/smbdotconf/security/hostsallow.xml

Last change on this file was 217, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.3.0 level docs-xml (psmedley's port)

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1<samba:parameter name="hosts allow"
2 context="S"
3 type="list"
4 basic="1" advanced="1" print="1" developer="1"
5 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
6<synonym>allow hosts</synonym>
7<description>
8 <para>A synonym for this parameter is <smbconfoption name="allow hosts"/>.</para>
9
10 <para>This parameter is a comma, space, or tab delimited
11 set of hosts which are permitted to access a service.</para>
12
13 <para>If specified in the [global] section then it will
14 apply to all services, regardless of whether the individual
15 service has a different setting.</para>
16
17 <para>You can specify the hosts by name or IP number. For
18 example, you could restrict access to only the hosts on a
19 Class C subnet with something like <command>allow hosts = 150.203.5.</command>.
20 The full syntax of the list is described in the man
21 page <filename>hosts_access(5)</filename>. Note that this man
22 page may not be present on your system, so a brief description will
23 be given here also.</para>
24
25 <para>Note that the localhost address 127.0.0.1 will always
26 be allowed access unless specifically denied by a <smbconfoption name="hosts deny"/> option.</para>
27
28 <para>You can also specify hosts by network/netmask pairs and
29 by netgroup names if your system supports netgroups. The
30 <emphasis>EXCEPT</emphasis> keyword can also be used to limit a
31 wildcard list. The following examples may provide some help:</para>
32
33<para>Example 1: allow all IPs in 150.203.*.*; except one</para>
34
35 <para><command moreinfo="none">hosts allow = 150.203. EXCEPT 150.203.6.66</command></para>
36
37 <para>Example 2: allow hosts that match the given network/netmask</para>
38
39 <para><command moreinfo="none">hosts allow = 150.203.15.0/255.255.255.0</command></para>
40
41 <para>Example 3: allow a couple of hosts</para>
42
43 <para><command moreinfo="none">hosts allow = lapland, arvidsjaur</command></para>
44
45 <para>Example 4: allow only hosts in NIS netgroup &quot;foonet&quot;, but
46 deny access from one particular host</para>
47
48 <para><command moreinfo="none">hosts allow = @foonet</command></para>
49
50 <para><command moreinfo="none">hosts deny = pirate</command></para>
51
52 <note><para>Note that access still requires suitable user-level passwords.</para></note>
53
54 <para>See <citerefentry><refentrytitle>testparm</refentrytitle>
55 <manvolnum>1</manvolnum></citerefentry> for a way of testing your host access
56 to see if it does what you expect.</para>
57
58
59</description>
60
61<value type="example">150.203.5. myhost.mynet.edu.au</value>
62<value type="default"><comment>none (i.e., all hosts permitted access)</comment></value>
63</samba:parameter>
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