UDPDUMP(1)                                                          UDPDUMP(1)

NAME
       udpdump - Provide a UDP receiver that gets packets from network devices
       (like Aruba routers) and exports them in PCAP format.

SYNOPSIS
       udpdump [ --help ] [ --version ] [ --extcap-interfaces ]
       [ --extcap-dlts ] [ --extcap-interface=<interface> ]
       [ --extcap-config ] [ --capture ] [ --fifo=<path to file or pipe> ]
       [ --port=<port> ] [ --payload=<type> ]

DESCRIPTION
       udpdump 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
       <https://gitlab.com/wireshark/wireshark/-/raw/master/epan/exported_pdu.h>

OPTIONS
       --help
           Print program arguments.

       --version
           Print program version.

       --extcap-interfaces
           List available interfaces.

       --extcap-interface=<interface>
           Use specified interfaces.

       --extcap-dlts
           List DLTs of specified interface.

       --extcap-config
           List configuration options of specified interface.

       --capture
           Start capturing from specified interface save saved it in place
           specified by --fifo.

       --fifo=<path to file or pipe>
           Save captured packet to file or send it through pipe.

       --port=<port>
           Set the listener port. Port 5555 is the default.

       --payload=<type>
           Set the payload of the exported PDU. Default: data.

EXAMPLES
       To see program arguments:

           udpdump --help

       To see program version:

           udpdump --version

       To see interfaces:

           udpdump --extcap-interfaces

       Example output

           interface {value=udpdump}{display=UDP Listener remote capture}

       To see interface DLTs:

           udpdump --extcap-interface=udpdump --extcap-dlts

       Example output

           dlt {number=252}{name=udpdump}{display=Exported PDUs}

       To see interface configuration options:

           udpdump --extcap-interface=udpdump --extcap-config

       Example output

           arg {number=0}{call=--port}{display=Listen port}{type=unsigned}{range=1,65535}{default=5555}{tooltip=The port the receiver listens on}

       To capture:

           udpdump --extcap-interface=randpkt --fifo=/tmp/randpkt.pcapng --capture

           Note

           To stop capturing CTRL+C/kill/terminate the application.

SEE ALSO
       wireshark(1), tshark(1), dumpcap(1), extcap(4)

NOTES
       udpdump is part of the Wireshark distribution.  The latest version of
       Wireshark can be found at  <https://www.wireshark.org>.

       HTML versions of the Wireshark project man pages are available at
       <https://www.wireshark.org/docs/man-pages>.

AUTHORS
       Original Author
       Dario Lombardo <lomato[AT]gmail.com>

                                  2024-10-13                        UDPDUMP(1)