- OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-->
-<!-- $Id: Bv9ARM.ch06.html,v 1.265 2010/12/17 01:14:03 tbox Exp $ -->
+<!-- $Id: Bv9ARM.ch06.html,v 1.266 2010/12/19 01:14:07 tbox Exp $ -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<dt><span class="sect1"><a href="Bv9ARM.ch06.html#configuration_file_elements">Configuration File Elements</a></span></dt>
<dd><dl>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#address_match_lists">Address Match Lists</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2574267">Comment Syntax</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2574270">Comment Syntax</a></span></dt>
</dl></dd>
<dt><span class="sect1"><a href="Bv9ARM.ch06.html#Configuration_File_Grammar">Configuration File Grammar</a></span></dt>
<dd><dl>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2574921"><span><strong class="command">acl</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2574924"><span><strong class="command">acl</strong></span> Statement Grammar</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#acl"><span><strong class="command">acl</strong></span> Statement Definition and
Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575111"><span><strong class="command">controls</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575114"><span><strong class="command">controls</strong></span> Statement Grammar</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#controls_statement_definition_and_usage"><span><strong class="command">controls</strong></span> Statement Definition and
Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575402"><span><strong class="command">include</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575419"><span><strong class="command">include</strong></span> Statement Definition and
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575405"><span><strong class="command">include</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575422"><span><strong class="command">include</strong></span> Statement Definition and
Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575443"><span><strong class="command">key</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575466"><span><strong class="command">key</strong></span> Statement Definition and Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575625"><span><strong class="command">logging</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575751"><span><strong class="command">logging</strong></span> Statement Definition and
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575446"><span><strong class="command">key</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575469"><span><strong class="command">key</strong></span> Statement Definition and Usage</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575560"><span><strong class="command">logging</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2575754"><span><strong class="command">logging</strong></span> Statement Definition and
Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2577886"><span><strong class="command">lwres</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2577960"><span><strong class="command">lwres</strong></span> Statement Definition and Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2578024"><span><strong class="command">masters</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2578068"><span><strong class="command">masters</strong></span> Statement Definition and
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2577821"><span><strong class="command">lwres</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2577963"><span><strong class="command">lwres</strong></span> Statement Definition and Usage</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2578027"><span><strong class="command">masters</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2578071"><span><strong class="command">masters</strong></span> Statement Definition and
Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2578083"><span><strong class="command">options</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2578086"><span><strong class="command">options</strong></span> Statement Grammar</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#options"><span><strong class="command">options</strong></span> Statement Definition and
Usage</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#server_statement_grammar"><span><strong class="command">server</strong></span> Statement Grammar</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#server_statement_definition_and_usage"><span><strong class="command">server</strong></span> Statement Definition and
Usage</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#statschannels"><span><strong class="command">statistics-channels</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2588725"><span><strong class="command">statistics-channels</strong></span> Statement Definition and
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2588747"><span><strong class="command">statistics-channels</strong></span> Statement Definition and
Usage</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#trusted-keys"><span><strong class="command">trusted-keys</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2588933"><span><strong class="command">trusted-keys</strong></span> Statement Definition
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2588955"><span><strong class="command">trusted-keys</strong></span> Statement Definition
and Usage</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2589048"><span><strong class="command">managed-keys</strong></span> Statement Grammar</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2589002"><span><strong class="command">managed-keys</strong></span> Statement Grammar</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#managed-keys"><span><strong class="command">managed-keys</strong></span> Statement Definition
and Usage</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#view_statement_grammar"><span><strong class="command">view</strong></span> Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2589474"><span><strong class="command">view</strong></span> Statement Definition and Usage</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2589496"><span><strong class="command">view</strong></span> Statement Definition and Usage</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#zone_statement_grammar"><span><strong class="command">zone</strong></span>
Statement Grammar</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2591086"><span><strong class="command">zone</strong></span> Statement Definition and Usage</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2591041"><span><strong class="command">zone</strong></span> Statement Definition and Usage</a></span></dt>
</dl></dd>
-<dt><span class="sect1"><a href="Bv9ARM.ch06.html#id2594087">Zone File</a></span></dt>
+<dt><span class="sect1"><a href="Bv9ARM.ch06.html#id2594041">Zone File</a></span></dt>
<dd><dl>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#types_of_resource_records_and_when_to_use_them">Types of Resource Records and When to Use Them</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2596249">Discussion of MX Records</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2596340">Discussion of MX Records</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#Setting_TTLs">Setting TTLs</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2597001">Inverse Mapping in IPv4</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2597128">Other Zone File Directives</a></span></dt>
-<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2597333"><acronym class="acronym">BIND</acronym> Master File Extension: the <span><strong class="command">$GENERATE</strong></span> Directive</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2597024">Inverse Mapping in IPv4</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2597219">Other Zone File Directives</a></span></dt>
+<dt><span class="sect2"><a href="Bv9ARM.ch06.html#id2597424"><acronym class="acronym">BIND</acronym> Master File Extension: the <span><strong class="command">$GENERATE</strong></span> Directive</a></span></dt>
<dt><span class="sect2"><a href="Bv9ARM.ch06.html#zonefile_format">Additional File Formats</a></span></dt>
</dl></dd>
<dt><span class="sect1"><a href="Bv9ARM.ch06.html#statistics">BIND9 Statistics</a></span></dt>
<a name="address_match_lists"></a>Address Match Lists</h3></div></div></div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2574034"></a>Syntax</h4></div></div></div>
+<a name="id2574037"></a>Syntax</h4></div></div></div>
<pre class="programlisting"><code class="varname">address_match_list</code> = address_match_list_element ;
[<span class="optional"> address_match_list_element; ... </span>]
<code class="varname">address_match_list_element</code> = [<span class="optional"> ! </span>] (ip_address [<span class="optional">/length</span>] |
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2574061"></a>Definition and Usage</h4></div></div></div>
+<a name="id2574065"></a>Definition and Usage</h4></div></div></div>
<p>
Address match lists are primarily used to determine access
control for various server operations. They are also used in
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2574267"></a>Comment Syntax</h3></div></div></div>
+<a name="id2574270"></a>Comment Syntax</h3></div></div></div>
<p>
The <acronym class="acronym">BIND</acronym> 9 comment syntax allows for
comments to appear
</p>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2574282"></a>Syntax</h4></div></div></div>
+<a name="id2574285"></a>Syntax</h4></div></div></div>
<p>
</p>
<pre class="programlisting">/* This is a <acronym class="acronym">BIND</acronym> comment as in C */</pre>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2574312"></a>Definition and Usage</h4></div></div></div>
+<a name="id2574315"></a>Definition and Usage</h4></div></div></div>
<p>
Comments may appear anywhere that whitespace may appear in
a <acronym class="acronym">BIND</acronym> configuration file.
</p>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2574921"></a><span><strong class="command">acl</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2574924"></a><span><strong class="command">acl</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting"><span><strong class="command">acl</strong></span> acl-name {
address_match_list
};
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575111"></a><span><strong class="command">controls</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2575114"></a><span><strong class="command">controls</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting"><span><strong class="command">controls</strong></span> {
[ inet ( ip_addr | * ) [ port ip_port ]
allow { <em class="replaceable"><code> address_match_list </code></em> }
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575402"></a><span><strong class="command">include</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2575405"></a><span><strong class="command">include</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting"><span><strong class="command">include</strong></span> <em class="replaceable"><code>filename</code></em>;</pre>
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575419"></a><span><strong class="command">include</strong></span> Statement Definition and
+<a name="id2575422"></a><span><strong class="command">include</strong></span> Statement Definition and
Usage</h3></div></div></div>
<p>
The <span><strong class="command">include</strong></span> statement inserts the
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575443"></a><span><strong class="command">key</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2575446"></a><span><strong class="command">key</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting"><span><strong class="command">key</strong></span> <em class="replaceable"><code>key_id</code></em> {
algorithm <em class="replaceable"><code>string</code></em>;
secret <em class="replaceable"><code>string</code></em>;
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575466"></a><span><strong class="command">key</strong></span> Statement Definition and Usage</h3></div></div></div>
+<a name="id2575469"></a><span><strong class="command">key</strong></span> Statement Definition and Usage</h3></div></div></div>
<p>
The <span><strong class="command">key</strong></span> statement defines a shared
secret key for use with TSIG (see <a href="Bv9ARM.ch04.html#tsig" title="TSIG">the section called “TSIG”</a>)
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575625"></a><span><strong class="command">logging</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2575560"></a><span><strong class="command">logging</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting"><span><strong class="command">logging</strong></span> {
[ <span><strong class="command">channel</strong></span> <em class="replaceable"><code>channel_name</code></em> {
( <span><strong class="command">file</strong></span> <em class="replaceable"><code>path_name</code></em>
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2575751"></a><span><strong class="command">logging</strong></span> Statement Definition and
+<a name="id2575754"></a><span><strong class="command">logging</strong></span> Statement Definition and
Usage</h3></div></div></div>
<p>
The <span><strong class="command">logging</strong></span> statement configures a
</p>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2575872"></a>The <span><strong class="command">channel</strong></span> Phrase</h4></div></div></div>
+<a name="id2575875"></a>The <span><strong class="command">channel</strong></span> Phrase</h4></div></div></div>
<p>
All log output goes to one or more <span class="emphasis"><em>channels</em></span>;
you can make as many of them as you want.
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2577230"></a>The <span><strong class="command">query-errors</strong></span> Category</h4></div></div></div>
+<a name="id2577234"></a>The <span><strong class="command">query-errors</strong></span> Category</h4></div></div></div>
<p>
The <span><strong class="command">query-errors</strong></span> category is
specifically intended for debugging purposes: To identify
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2577886"></a><span><strong class="command">lwres</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2577821"></a><span><strong class="command">lwres</strong></span> Statement Grammar</h3></div></div></div>
<p>
This is the grammar of the <span><strong class="command">lwres</strong></span>
statement in the <code class="filename">named.conf</code> file:
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2577960"></a><span><strong class="command">lwres</strong></span> Statement Definition and Usage</h3></div></div></div>
+<a name="id2577963"></a><span><strong class="command">lwres</strong></span> Statement Definition and Usage</h3></div></div></div>
<p>
The <span><strong class="command">lwres</strong></span> statement configures the
name
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2578024"></a><span><strong class="command">masters</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2578027"></a><span><strong class="command">masters</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting">
<span><strong class="command">masters</strong></span> <em class="replaceable"><code>name</code></em> [<span class="optional">port <em class="replaceable"><code>ip_port</code></em></span>] { ( <em class="replaceable"><code>masters_list</code></em> |
<em class="replaceable"><code>ip_addr</code></em> [<span class="optional">port <em class="replaceable"><code>ip_port</code></em></span>] [<span class="optional">key <em class="replaceable"><code>key</code></em></span>] ) ; [<span class="optional">...</span>] };
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2578068"></a><span><strong class="command">masters</strong></span> Statement Definition and
+<a name="id2578071"></a><span><strong class="command">masters</strong></span> Statement Definition and
Usage</h3></div></div></div>
<p><span><strong class="command">masters</strong></span>
lists allow for a common set of masters to be easily used by
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2578083"></a><span><strong class="command">options</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2578086"></a><span><strong class="command">options</strong></span> Statement Grammar</h3></div></div></div>
<p>
This is the grammar of the <span><strong class="command">options</strong></span>
statement in the <code class="filename">named.conf</code> file:
[<span class="optional"> key-directory <em class="replaceable"><code>path_name</code></em>; </span>]
[<span class="optional"> managed-keys-directory <em class="replaceable"><code>path_name</code></em>; </span>]
[<span class="optional"> named-xfer <em class="replaceable"><code>path_name</code></em>; </span>]
+ [<span class="optional"> tkey-gssapi-keytab <em class="replaceable"><code>path_name</code></em>; </span>]
[<span class="optional"> tkey-gssapi-credential <em class="replaceable"><code>principal</code></em>; </span>]
[<span class="optional"> tkey-domain <em class="replaceable"><code>domainname</code></em>; </span>]
[<span class="optional"> tkey-dhkey <em class="replaceable"><code>key_name</code></em> <em class="replaceable"><code>key_tag</code></em>; </span>]
<span><strong class="command">named-xfer</strong></span> program is needed;
its functionality is built into the name server.
</p></dd>
+<dt><span class="term"><span><strong class="command">tkey-gssapi-keytab</strong></span></span></dt>
+<dd><p>
+ The KRB5 keytab file to use for GSS-TSIG updates. If
+ this option is set and tkey-gssapi-credential is not
+ set, then updates will be allowed with any key
+ matching a principal in the specified keytab.
+ </p></dd>
<dt><span class="term"><span><strong class="command">tkey-gssapi-credential</strong></span></span></dt>
<dd><p>
The security credential with which the server should
authenticate keys requested by the GSS-TSIG protocol.
Currently only Kerberos 5 authentication is available
- and the credential is a Kerberos principal which
- the server can acquire through the default system
- key file, normally <code class="filename">/etc/krb5.keytab</code>.
- Normally this principal is of the form
- "<strong class="userinput"><code>DNS/</code></strong><code class="varname">server.domain</code>".
- To use GSS-TSIG, <span><strong class="command">tkey-domain</strong></span>
- must also be set.
+ and the credential is a Kerberos principal which the
+ server can acquire through the default system key
+ file, normally <code class="filename">/etc/krb5.keytab</code>.
+ The location keytab file can be overridden using the
+ tkey-gssapi-keytab option. Normally this principal is
+ of the form "<strong class="userinput"><code>DNS/</code></strong><code class="varname">server.domain</code>".
+ To use GSS-TSIG, <span><strong class="command">tkey-domain</strong></span> must
+ also be set if a specific keytab is not set with
+ tkey-gssapi-keytab.
</p></dd>
<dt><span class="term"><span><strong class="command">tkey-domain</strong></span></span></dt>
<dd><p>
should be the server's domain name, or an otherwise
non-existent subdomain like
"_tkey.<code class="varname">domainname</code>". If you are
- using GSS-TSIG, this variable must be defined.
+ using GSS-TSIG, this variable must be defined, unless
+ you specify a specific keytab using tkey-gssapi-keytab.
</p></dd>
<dt><span class="term"><span><strong class="command">tkey-dhkey</strong></span></span></dt>
<dd><p>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2583384"></a>Forwarding</h4></div></div></div>
+<a name="id2583406"></a>Forwarding</h4></div></div></div>
<p>
The forwarding facility can be used to create a large site-wide
cache on a few servers, reducing traffic over links to external
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2583443"></a>Dual-stack Servers</h4></div></div></div>
+<a name="id2583533"></a>Dual-stack Servers</h4></div></div></div>
<p>
Dual-stack servers are used as servers of last resort to work
around
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2584038"></a>Interfaces</h4></div></div></div>
+<a name="id2584129"></a>Interfaces</h4></div></div></div>
<p>
The interfaces and ports that the server will answer queries
from may be specified using the <span><strong class="command">listen-on</strong></span> option. <span><strong class="command">listen-on</strong></span> takes
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2585309"></a>UDP Port Lists</h4></div></div></div>
+<a name="id2585264"></a>UDP Port Lists</h4></div></div></div>
<p>
<span><strong class="command">use-v4-udp-ports</strong></span>,
<span><strong class="command">avoid-v4-udp-ports</strong></span>,
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2585369"></a>Operating System Resource Limits</h4></div></div></div>
+<a name="id2585323"></a>Operating System Resource Limits</h4></div></div></div>
<p>
The server's usage of many system resources can be limited.
Scaled values are allowed when specifying resource limits. For
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2585655"></a>Periodic Task Intervals</h4></div></div></div>
+<a name="id2585746"></a>Periodic Task Intervals</h4></div></div></div>
<div class="variablelist"><dl>
<dt><span class="term"><span><strong class="command">cleaning-interval</strong></span></span></dt>
<dd><p>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2587836"></a>Content Filtering</h4></div></div></div>
+<a name="id2587927"></a>Content Filtering</h4></div></div></div>
<p>
<acronym class="acronym">BIND</acronym> 9 provides the ability to filter
out DNS responses from external DNS servers containing
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2588725"></a><span><strong class="command">statistics-channels</strong></span> Statement Definition and
+<a name="id2588747"></a><span><strong class="command">statistics-channels</strong></span> Statement Definition and
Usage</h3></div></div></div>
<p>
The <span><strong class="command">statistics-channels</strong></span> statement
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2588933"></a><span><strong class="command">trusted-keys</strong></span> Statement Definition
+<a name="id2588955"></a><span><strong class="command">trusted-keys</strong></span> Statement Definition
and Usage</h3></div></div></div>
<p>
The <span><strong class="command">trusted-keys</strong></span> statement defines
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2589048"></a><span><strong class="command">managed-keys</strong></span> Statement Grammar</h3></div></div></div>
+<a name="id2589002"></a><span><strong class="command">managed-keys</strong></span> Statement Grammar</h3></div></div></div>
<pre class="programlisting"><span><strong class="command">managed-keys</strong></span> {
<em class="replaceable"><code>string</code></em> initial-key <em class="replaceable"><code>number</code></em> <em class="replaceable"><code>number</code></em> <em class="replaceable"><code>number</code></em> <em class="replaceable"><code>string</code></em> ;
[<span class="optional"> <em class="replaceable"><code>string</code></em> initial-key <em class="replaceable"><code>number</code></em> <em class="replaceable"><code>number</code></em> <em class="replaceable"><code>number</code></em> <em class="replaceable"><code>string</code></em> ; [<span class="optional">...</span>]</span>]
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2589474"></a><span><strong class="command">view</strong></span> Statement Definition and Usage</h3></div></div></div>
+<a name="id2589496"></a><span><strong class="command">view</strong></span> Statement Definition and Usage</h3></div></div></div>
<p>
The <span><strong class="command">view</strong></span> statement is a powerful
feature
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2591086"></a><span><strong class="command">zone</strong></span> Statement Definition and Usage</h3></div></div></div>
+<a name="id2591041"></a><span><strong class="command">zone</strong></span> Statement Definition and Usage</h3></div></div></div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2591094"></a>Zone Types</h4></div></div></div>
+<a name="id2591048"></a>Zone Types</h4></div></div></div>
<div class="informaltable"><table border="1">
<colgroup>
<col>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2591502"></a>Class</h4></div></div></div>
+<a name="id2591525"></a>Class</h4></div></div></div>
<p>
The zone's name may optionally be followed by a class. If
a class is not specified, class <code class="literal">IN</code> (for <code class="varname">Internet</code>),
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2591536"></a>Zone Options</h4></div></div></div>
+<a name="id2591626"></a>Zone Options</h4></div></div></div>
<div class="variablelist"><dl>
<dt><span class="term"><span><strong class="command">allow-notify</strong></span></span></dt>
<dd><p>
</div>
<div class="sect1" lang="en">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
-<a name="id2594087"></a>Zone File</h2></div></div></div>
+<a name="id2594041"></a>Zone File</h2></div></div></div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
<a name="types_of_resource_records_and_when_to_use_them"></a>Types of Resource Records and When to Use Them</h3></div></div></div>
</p>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2594105"></a>Resource Records</h4></div></div></div>
+<a name="id2594059"></a>Resource Records</h4></div></div></div>
<p>
A domain name identifies a node. Each node has a set of
resource information, which may be empty. The set of resource
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2595729"></a>Textual expression of RRs</h4></div></div></div>
+<a name="id2595751"></a>Textual expression of RRs</h4></div></div></div>
<p>
RRs are represented in binary form in the packets of the DNS
protocol, and are usually represented in highly encoded form
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2596249"></a>Discussion of MX Records</h3></div></div></div>
+<a name="id2596340"></a>Discussion of MX Records</h3></div></div></div>
<p>
As described above, domain servers store information as a
series of resource records, each of which contains a particular
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2597001"></a>Inverse Mapping in IPv4</h3></div></div></div>
+<a name="id2597024"></a>Inverse Mapping in IPv4</h3></div></div></div>
<p>
Reverse name resolution (that is, translation from IP address
to name) is achieved by means of the <span class="emphasis"><em>in-addr.arpa</em></span> domain
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2597128"></a>Other Zone File Directives</h3></div></div></div>
+<a name="id2597219"></a>Other Zone File Directives</h3></div></div></div>
<p>
The Master File Format was initially defined in RFC 1035 and
has subsequently been extended. While the Master File Format
</p>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2597150"></a>The <span><strong class="command">@</strong></span> (at-sign)</h4></div></div></div>
+<a name="id2597241"></a>The <span><strong class="command">@</strong></span> (at-sign)</h4></div></div></div>
<p>
When used in the label (or name) field, the asperand or
at-sign (@) symbol represents the current origin.
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2597166"></a>The <span><strong class="command">$ORIGIN</strong></span> Directive</h4></div></div></div>
+<a name="id2597257"></a>The <span><strong class="command">$ORIGIN</strong></span> Directive</h4></div></div></div>
<p>
Syntax: <span><strong class="command">$ORIGIN</strong></span>
<em class="replaceable"><code>domain-name</code></em>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2597227"></a>The <span><strong class="command">$INCLUDE</strong></span> Directive</h4></div></div></div>
+<a name="id2597318"></a>The <span><strong class="command">$INCLUDE</strong></span> Directive</h4></div></div></div>
<p>
Syntax: <span><strong class="command">$INCLUDE</strong></span>
<em class="replaceable"><code>filename</code></em>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2597297"></a>The <span><strong class="command">$TTL</strong></span> Directive</h4></div></div></div>
+<a name="id2597387"></a>The <span><strong class="command">$TTL</strong></span> Directive</h4></div></div></div>
<p>
Syntax: <span><strong class="command">$TTL</strong></span>
<em class="replaceable"><code>default-ttl</code></em>
</div>
<div class="sect2" lang="en">
<div class="titlepage"><div><div><h3 class="title">
-<a name="id2597333"></a><acronym class="acronym">BIND</acronym> Master File Extension: the <span><strong class="command">$GENERATE</strong></span> Directive</h3></div></div></div>
+<a name="id2597424"></a><acronym class="acronym">BIND</acronym> Master File Extension: the <span><strong class="command">$GENERATE</strong></span> Directive</h3></div></div></div>
<p>
Syntax: <span><strong class="command">$GENERATE</strong></span>
<em class="replaceable"><code>range</code></em>
</p>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2598423"></a>Name Server Statistics Counters</h4></div></div></div>
+<a name="id2598445"></a>Name Server Statistics Counters</h4></div></div></div>
<div class="informaltable"><table border="1">
<colgroup>
<col>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2599896"></a>Zone Maintenance Statistics Counters</h4></div></div></div>
+<a name="id2599987"></a>Zone Maintenance Statistics Counters</h4></div></div></div>
<div class="informaltable"><table border="1">
<colgroup>
<col>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2600279"></a>Resolver Statistics Counters</h4></div></div></div>
+<a name="id2600370"></a>Resolver Statistics Counters</h4></div></div></div>
<div class="informaltable"><table border="1">
<colgroup>
<col>
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2601369"></a>Socket I/O Statistics Counters</h4></div></div></div>
+<a name="id2601460"></a>Socket I/O Statistics Counters</h4></div></div></div>
<p>
Socket I/O statistics counters are defined per socket
types, which are
</div>
<div class="sect3" lang="en">
<div class="titlepage"><div><div><h4 class="title">
-<a name="id2601811"></a>Compatibility with <span class="emphasis"><em>BIND</em></span> 8 Counters</h4></div></div></div>
+<a name="id2601901"></a>Compatibility with <span class="emphasis"><em>BIND</em></span> 8 Counters</h4></div></div></div>
<p>
Most statistics counters that were available
in <span><strong class="command">BIND</strong></span> 8 are also supported in