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diff --git a/doc/manual/conntrack-tools.tmpl b/doc/manual/conntrack-tools.tmpl
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+++ b/doc/manual/conntrack-tools.tmpl
@@ -592,29 +592,6 @@ Sync {
</sect3>
-<sect3 id="sync-iptables-filtering">
-<title>Filtering Connection tracking events with iptables</title>
-
- <para>Since Linux kernel &gt;= 2.6.34, iptables provides the
- <emphasis>CT</emphasis> iptables target that allows to reduce the
- amount of Connection Tracking events that are delivered to user-space.
- The following example shows how to only generate the
- <emphasis>assured</emphasis> event:</para>
-
- <programlisting>
- # iptables -I PREROUTING -t raw -j CT --ctevents assured
- </programlisting>
-
- <note><title>Assured flows</title>
- <para>One flow is assured if the firewall has seen traffic for it in
- both directions.</para>
- </note>
-
- <para>Reducing the amount of events generated helps to reduce CPU
- consumption in the active firewall.</para>
-
-</sect3>
-
</sect2>
<sect2 id="sync-trouble"><title>Troubleshooting</title>