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[1] [2] [3] It accepts as input files produced by packet-capture programs, including tcpdump, Wireshark, and snoop. tcptrace can produce several different types of output containing information on each connection seen, such as elapsed time, bytes and segments sent and received, retransmissions, round trip times , window advertisements, and ...
tcpdump: The Tcpdump team April 7, 2023 / 4.99.4 [13] CLI: BSD License: Free Wireshark (formerly Ethereal) The Wireshark team November 22, 2021 / 4.0.6 [14] Both GNU General Public License: Free Xplico: The Xplico team May 2, 2019 / 1.2.2 [15] Both GNU General Public License: Free
A capture file saved in the format that libpcap, WinPcap, and Npcap use can be read by applications that understand that format, such as tcpdump, Wireshark, CA NetMaster, or Microsoft Network Monitor 3.x. The file format is described by Internet-Draft draft-ietf-opsawg-pcap; [5] the current editors' version of the draft is also available. [6]
Wireshark is very similar to tcpdump, but has a graphical front-end and integrated sorting and filtering options.. Wireshark lets the user put network interface controllers into promiscuous mode (if supported by the network interface controller), so they can see all the traffic visible on that interface including unicast traffic not sent to that network interface controller's MAC address.
tcpdump prints the contents of network packets. It can read packets from a network interface card or from a previously created saved packet file. tcpdump can write packets to standard output or a file. It is also possible to use tcpdump for the specific purpose of intercepting and displaying the communications of another user or computer.
When an item such as a file, e-mail message, voice or video stream is transmitted through the network, it is broken into chunks called packets that can be more efficiently moved through the network than one large block of data. Numerous standards [16] cover the structure of packets, but typically packets are composed of three elements:
That interpreter can also be used when reading a file containing packets captured using pcap. Another user-mode interpreter is uBPF, which supports JIT and eBPF (without cBPF). Its code has been reused to provide eBPF support in non-Linux systems. [6] Microsoft's eBPF on Windows builds on uBPF and the PREVAIL formal verifier.
There are two software suites that are able to communicate with RRCP-capable switches. First is Realtek's own WinSmart utility and Vendor-derived variants from it. Second is the OpenRRCP open-source project. Additionally, tcpdump has an interpreter for RRCP packets.