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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="generator" content="Asciidoctor 2.0.20"> <title>udpdump(1)</title> <link rel="stylesheet" href="./ws.css"> </head> <body class="manpage"> <div id="header"> <h1>udpdump(1) Manual Page</h1> <h2 id="_name">NAME</h2> <div class="sectionbody"> <p>udpdump - Provide a UDP receiver that gets packets from network devices (like Aruba routers) and exports them in PCAP format.</p> </div> </div> <div id="content"> <div class="sect1"> <h2 id="_synopsis">SYNOPSIS</h2> <div class="sectionbody"> <div class="paragraph"> <p><span class="nowrap"><strong>udpdump</strong></span> <span class="nowrap">[ <strong>--help</strong> ]</span> <span class="nowrap">[ <strong>--version</strong> ]</span> <span class="nowrap">[ <strong>--extcap-interfaces</strong> ]</span> <span class="nowrap">[ <strong>--extcap-dlts</strong> ]</span> <span class="nowrap">[ <strong>--extcap-interface</strong>=<interface> ]</span> <span class="nowrap">[ <strong>--extcap-config</strong> ]</span> <span class="nowrap">[ <strong>--capture</strong> ]</span> <span class="nowrap">[ <strong>--fifo</strong>=<path to file or pipe> ]</span> <span class="nowrap">[ <strong>--port</strong>=<port> ]</span> <span class="nowrap">[ <strong>--payload</strong>=<type> ]</span></p> </div> </div> </div> <div class="sect1"> <h2 id="_description">DESCRIPTION</h2> <div class="sectionbody"> <div class="paragraph"> <p><strong>udpdump</strong> is a extcap tool that provides a UDP receiver that listens for exported datagrams coming from any source (like Aruba routers) and exports them in PCAP format. This provides the user two basic functionalities: the first one is to have a listener that prevents the localhost to send back an ICMP port-unreachable packet. The second one is to strip out the lower layers (layer 2, IP, UDP) that are useless (are used just as export vector). The format of the exported datagrams are EXPORTED_PDU, as specified in <a href="https://gitlab.com/wireshark/wireshark/-/raw/master/epan/exported_pdu.h" class="bare">https://gitlab.com/wireshark/wireshark/-/raw/master/epan/exported_pdu.h</a></p> </div> </div> </div> <div class="sect1"> <h2 id="_options">OPTIONS</h2> <div class="sectionbody"> <div class="dlist"> <dl> <dt class="hdlist1">--help</dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Print program arguments.</p> </div> </div> </div> </dd> <dt class="hdlist1">--version</dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Print program version.</p> </div> </div> </div> </dd> <dt class="hdlist1">--extcap-interfaces</dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>List available interfaces.</p> </div> </div> </div> </dd> <dt class="hdlist1">--extcap-interface=<interface></dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Use specified interfaces.</p> </div> </div> </div> </dd> <dt class="hdlist1">--extcap-dlts</dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>List DLTs of specified interface.</p> </div> </div> </div> </dd> <dt class="hdlist1">--extcap-config</dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>List configuration options of specified interface.</p> </div> </div> </div> </dd> <dt class="hdlist1">--capture</dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Start capturing from specified interface save saved it in place specified by --fifo.</p> </div> </div> </div> </dd> <dt class="hdlist1">--fifo=<path to file or pipe></dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Save captured packet to file or send it through pipe.</p> </div> </div> </div> </dd> <dt class="hdlist1">--port=<port></dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Set the listener port. Port 5555 is the default.</p> </div> </div> </div> </dd> <dt class="hdlist1">--payload=<type></dt> <dd> <div class="openblock"> <div class="content"> <div class="paragraph"> <p>Set the payload of the exported PDU. Default: data.</p> </div> </div> </div> </dd> </dl> </div> </div> </div> <div class="sect1"> <h2 id="_examples">EXAMPLES</h2> <div class="sectionbody"> <div class="paragraph"> <p>To see program arguments:</p> </div> <div class="literalblock"> <div class="content"> <pre>udpdump --help</pre> </div> </div> <div class="paragraph"> <p>To see program version:</p> </div> <div class="literalblock"> <div class="content"> <pre>udpdump --version</pre> </div> </div> <div class="paragraph"> <p>To see interfaces:</p> </div> <div class="literalblock"> <div class="content"> <pre>udpdump --extcap-interfaces</pre> </div> </div> <div class="literalblock"> <div class="title">Example output</div> <div class="content"> <pre>interface {value=udpdump}{display=UDP Listener remote capture}</pre> </div> </div> <div class="paragraph"> <p>To see interface DLTs:</p> </div> <div class="literalblock"> <div class="content"> <pre>udpdump --extcap-interface=udpdump --extcap-dlts</pre> </div> </div> <div class="literalblock"> <div class="title">Example output</div> <div class="content"> <pre>dlt {number=252}{name=udpdump}{display=Exported PDUs}</pre> </div> </div> <div class="paragraph"> <p>To see interface configuration options:</p> </div> <div class="literalblock"> <div class="content"> <pre>udpdump --extcap-interface=udpdump --extcap-config</pre> </div> </div> <div class="literalblock"> <div class="title">Example output</div> <div class="content"> <pre>arg {number=0}{call=--port}{display=Listen port}{type=unsigned}{range=1,65535}{default=5555}{tooltip=The port the receiver listens on}</pre> </div> </div> <div class="paragraph"> <p>To capture:</p> </div> <div class="literalblock"> <div class="content"> <pre>udpdump --extcap-interface=randpkt --fifo=/tmp/randpkt.pcapng --capture</pre> </div> </div> <div class="admonitionblock note"> <table> <tr> <td class="icon"> <div class="title">Note</div> </td> <td class="content"> To stop capturing CTRL+C/kill/terminate the application. </td> </tr> </table> </div> </div> </div> <div class="sect1"> <h2 id="_see_also">SEE ALSO</h2> <div class="sectionbody"> <div class="paragraph"> <p><a href="wireshark.html">wireshark</a>(1), <a href="tshark.html">tshark</a>(1), <a href="dumpcap.html">dumpcap</a>(1), <a href="extcap.html">extcap</a>(4)</p> </div> </div> </div> <div class="sect1"> <h2 id="_notes">NOTES</h2> <div class="sectionbody"> <div class="paragraph"> <p><strong>udpdump</strong> is part of the <strong>Wireshark</strong> distribution. The latest version of <strong>Wireshark</strong> can be found at <a href="https://www.wireshark.org" class="bare">https://www.wireshark.org</a>.</p> </div> <div class="paragraph"> <p>HTML versions of the Wireshark project man pages are available at <a href="https://www.wireshark.org/docs/man-pages" class="bare">https://www.wireshark.org/docs/man-pages</a>.</p> </div> </div> </div> <div class="sect1"> <h2 id="_authors">AUTHORS</h2> <div class="sectionbody"> <div class="paragraph"> <div class="title">Original Author</div> <p>Dario Lombardo <lomato[AT]gmail.com></p> </div> </div> </div> </div> </body> </html>