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diff --git a/docs-xml/manpages/traffic_learner.7.xml b/docs-xml/manpages/traffic_learner.7.xml new file mode 100644 index 0000000..b921035 --- /dev/null +++ b/docs-xml/manpages/traffic_learner.7.xml @@ -0,0 +1,199 @@ +<?xml version="1.0" encoding="iso-8859-1"?> +<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc"> +<refentry id="traffic_learner.7"> + +<refmeta> + <refentrytitle>traffic_learner</refentrytitle> + <manvolnum>7</manvolnum> + <refmiscinfo class="source">Samba</refmiscinfo> + <refmiscinfo class="manual">User Commands</refmiscinfo> + <refmiscinfo class="version">&doc.version;</refmiscinfo> +</refmeta> + + +<refnamediv> + <refname>traffic_learner</refname> + <refpurpose>Samba tool to assist with traffic generation. + </refpurpose> +</refnamediv> + +<refsynopsisdiv> + <cmdsynopsis> + <command>traffic_learner</command> + <arg choice="req">-o OUTPUT_FILE ...</arg> + <arg choice="opt">-h</arg> + <arg choice="opt">--dns-mode {inline|count}</arg> + <arg choice="opt">SUMMARY_FILE</arg> + <arg choice="opt">SUMMARY_FILE ...</arg> + </cmdsynopsis> +</refsynopsisdiv> + +<refsect1> + <title>DESCRIPTION</title> + <para>This tool is part of the <citerefentry><refentrytitle>samba</refentrytitle> + <manvolnum>7</manvolnum></citerefentry> suite.</para> + + <para>This tool assists with generation of Samba traffic. + It takes a traffic-summary file (produced by + <command>traffic_summary.pl</command>) as input and produces a + traffic-model file that can be used by <command>traffic_replay</command> + for traffic generation.</para> + + <para>The model file summarizes the types of traffic ('conversations' + between a host and a Samba DC) that occur on a network. The model file + describes the traffic in a way that allows it to be scaled so that + either more (or fewer) packets get sent, and the packets can be sent at + a faster (or slower) rate than that seen in the network.</para> +</refsect1> + +<refsect1> + <title>OPTIONS</title> + + <variablelist> + + <varlistentry> + <term>-h|--help</term> + <listitem><para> + Print a summary of command line options. + </para></listitem> + </varlistentry> + + <varlistentry> + <term>SUMMARY_FILE</term> + <listitem><para> + File containing a network traffic-summary. The traffic-summary file + should be generated by <command>traffic_summary.pl</command> from a + packet capture of actual network traffic. + More than one file can be specified, in which case the traffic will + be combined into a single traffic-model. If no SUMMARY_FILE is + specified, this tool will read the traffic-summary from STDIN, i.e. + you can pipe the output from traffic_summary.pl directly to this tool. + </para></listitem> + </varlistentry> + + <varlistentry> + <term>-o|--out OUTPUT_FILE</term> + <listitem><para> + The traffic-model that is produced will be written to this file. The + OUTPUT_FILE can then be passed to <command>traffic_replay</command> + to generate (and manipulate) Samba network traffic. + </para></listitem> + </varlistentry> + + <varlistentry> + <term>--dns-mode [inline|count]</term> + <listitem><para> + How DNS traffic should be handled by the model. + </para></listitem> + </varlistentry> + + </variablelist> +</refsect1> + +<refsect1> + <title>EXAMPLES</title> + + <para>To take a traffic-summary file and produce a traffic-model + file, use:</para> + + <para><command>traffic_learner traffic-summary.txt + -o traffic-model.txt</command></para> + + <para>To generate a traffic-model from a packet capture, you can + pipe the traffic summary to STDIN using:</para> + + <para><command>tshark -r capture.pcapng -T pdml | + traffic_summary.pl | traffic_learner -o traffic-model.txt</command></para> +</refsect1> + +<refsect1> + <title>OUTPUT FILE FORMAT</title> + + <para>The output model file describes a Markov model estimating the + probability of a packet occurring given the last two packets.</para> + + <para>The count of each continuation after a pair of + successive packets is stored, and the ratios of these counts + is used to calculate probabilities for the next packet. + </para> + + <para>The model is stored in JSON format, and also contains + information about the packet rate and DNS traffic rate.</para> + + +<refsect2> + <title>Example ngram listing</title> + <para>The following listing shows a contrived example of a single ngram entry. + </para> + + <programlisting> + "ngrams": { + "ldap:0\tdcerpc:11": { + "lsarpc:77": 1, + "ldap:2": 370, + "ldap:3": 62, + "wait:3": 2, + "-": 1 + }, <lineannotation>[...]</lineannotation> + } + </programlisting> + <para> This counts the observed continuations after an ldap + packet with opcode 0 (a bind) followed by a dcerpc packet with + opcode 11 (also a bind). The most common next packet is + "<code>ldap:2</code>" which is an unbind, so this is the most + likely packet type to be selected in replay. At the other + extreme, lsarpc opcode 77 (lookup names) has been seen only + once, and it is unlikely but possible that this will be + selected in replay. + </para> + <para> There are two special packet types here. + "<code>wait:3</code>" refers to a temporary pause in the + conversation, where the "<code>3</code>" pseudo-opcode indicates + the length of the wait on an exponential scale. That is, a + "<code>wait:4</code>" pause would be about 2.7 times longer that + a "<code>wait:3</code>", which in turn would be similarly longer + than a "<code>wait:2</code>". + </para> + + <para>The other special packet is "-", which represents the + limit of the conversation. In the example, this indicates that + one observed conversation ended after this particular ngram. + This special opcode is also used at the beginning of + conversations, which are indicated by the ngram "<code>-\t-</code>". + </para> + + +</refsect2> +</refsect1> + +<refsect1> + <title>VERSION</title> + + <para>This man page is complete for version &doc.version; of the Samba + suite.</para> +</refsect1> + +<refsect1> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>traffic_replay</refentrytitle><manvolnum>7</manvolnum> + </citerefentry>. + </para> +</refsect1> + +<refsect1> + <title>AUTHOR</title> + + <para>The original Samba software and related utilities + were created by Andrew Tridgell. Samba is now developed + by the Samba Team as an Open Source project similar + to the way the Linux kernel is developed.</para> + + <para>The traffic_learner tool was developed by the Samba team at + Catalyst IT Ltd.</para> + + <para>The traffic_learner manpage was written by Tim Beale.</para> +</refsect1> + +</refentry> |