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= ] [ --extcap-config ] [ --capture ] [ --fifo= ] [ --port= ] [ --payload= ] 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 OPTIONS --help Print program arguments. --version Print program version. --extcap-interfaces List available interfaces. --extcap-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= Save captured packet to file or send it through pipe. --port= Set the listener port. Port 5555 is the default. --payload= 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 . HTML versions of the Wireshark project man pages are available at . AUTHORS Original Author Dario Lombardo 2024-11-30 UDPDUMP(1)