tcpdump
| tcpdump | |
|---|---|
 | |
%22%3E%3Ctext%20x%3D%2250%25%22%20y%3D%2250%25%22%20text-anchor%3D%22middle%22%20dominant-baseline%3D%22middle%22%20fill%3D%22%2354595d%22%20font-size%3D%2216%22%20font-family%3D%22sans-serif%22%3Etcpdump%20console%20output%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fsvg%3E) tcpdump console output | |
| Developer | The Tcpdump team |
| Release | 1988 |
| Stable release | 4.99.6 
/ 30 December 2025 |
| Written in | C |
| Operating system | Linux (including Android and embedded distribution such as OpenWrt), Solaris, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, macOS, and additional *NIX systems, Windows, AmigaOS 4 |
| Type | Packet analyzer |
| License | BSD license |
| Website | www |
| Repository | tcpdump on GitHub |
tcpdump is a data-network packet analyzer computer program that runs under a command line interface. It allows the user to display TCP/IP and other packets being transmitted or received over a network to which the computer is attached. Distributed under the BSD license, tcpdump is free software.
Tcpdump works on most Unix-like operating systems: Linux (including Android and embedded distribution such as OpenWrt), Solaris, FreeBSD, DragonFly BSD, NetBSD, OpenBSD, macOS, HP-UX 11i, and AIX. In those systems, tcpdump uses the libpcap library to capture packets. The port of tcpdump for Windows is called WinDump; it uses WinPcap, the Windows version of libpcap.