diff --git a/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml b/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml
index 16c64690ed..d3f07d269e 100644
--- a/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml
@@ -2265,6 +2265,12 @@ options    IPV6FIREWALL_DEFAULT_TO_ACCEPT</programlisting>
 
 	<programlisting>net.inet.ip.fw.verbose_limit=5</programlisting>
       </warning>
+
+      <para>If your machine is acting as a gateway, i.e. providing
+	Network Address Translation (NAT) via &man.natd.8;, please
+	refer to <xref linkend="network-natd"> for information
+	regarding the required <filename>/etc/rc.conf</filename>
+	options.</para>
     </sect2>
 
     <sect2 id="firewalls-ipfw-cmd">