<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Tools to analyse DNS traffic</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="PowerDNS manual"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="About PowerDNS.COM BV, 'the company'"
HREF="powerdns-company-faq.html"><LINK
REL="NEXT"
TITLE="Backends in detail"
HREF="backends-detail.html"></HEAD
><BODY
CLASS="CHAPTER"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>PowerDNS manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="powerdns-company-faq.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="backends-detail.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="ANALYSIS"
></A
>Chapter 19. Tools to analyse DNS traffic</H1
><P
> DNS is highly mission critical, it is therefore necessary to be able to study and compare DNS traffic. Since 2.9.18, PowerDNS comes
with three tools to aid in analysis:
<DIV
CLASS="WARNING"
><P
></P
><TABLE
CLASS="WARNING"
WIDTH="100%"
BORDER="0"
><TR
><TD
WIDTH="25"
ALIGN="CENTER"
VALIGN="TOP"
><IMG
SRC="../images/warning.gif"
HSPACE="5"
ALT="Warning"></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><P
> As of 2.9.18 these tools are somewhat rough - they have no help messages for example. They do work though.
</P
></TD
></TR
></TABLE
></DIV
>
<P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>dnsreplay pcapfile [ipaddress] [port number]</DT
><DD
><P
> This program takes recorded questions and answers and replays them to a specified nameserver and reporting afterwards
which percentage of answers matched, were worse or better.
</P
></DD
><DT
>dnswasher pcapfile output</DT
><DD
><P
> Anonymises recorded traffic, making sure it only contains DNS, and that the originating IP addresses of queries are stripped, which may
allow you to send traces to our company or mailing list without violating obligations towards your customers or privacy laws.
</P
></DD
><DT
>dnsscope pcapfile</DT
><DD
><P
> Calculates statistics without replaying traffic
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="powerdns-company-faq.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="backends-detail.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>About PowerDNS.COM BV, 'the company'</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
> </TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Backends in detail</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
