<chapter id="analysis"><title>Tools to analyse DNS traffic</title>
<para>
DNS is highly mission critical, it is therefore necessary to be able to study and compare DNS traffic. Since version 2.9.18, PowerDNS comes
- with three tools to aid in analysis:
- <warning>
- <para>
- As of 2.9.18 these tools are somewhat rough - they have no help messages for example. They do work though.
- </para>
- </warning>
+ with various tools to aid in analysis. These tools are best documented by their manpages, and their --help output.
<variablelist>
<varlistentry>
<term>dnsreplay pcapfile [ipaddress] [port number]</term>
<term>dnsscope pcapfile</term>
<listitem>
<para>
- Calculates statistics without replaying traffic
+ Calculates statistics without replaying traffic.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>dnsbulktest</term>
+ <listitem>
+ <para>
+ Send out thousands of queries in parallel from Alexa top list to stress out resolvers.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>dnsdist</term>
+ <listitem>
+ <para>
+ Simple but high performance UDP and TCP DNS load balancer/distributor.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>dnstcpbench</term>
+ <listitem>
+ <para>
+ Stress out DNS servers with TCP based queries, as read from a file.
</para>
</listitem>
</varlistentry>