tcpdump
The classic command-line packet capture and analysis tool.
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1 more ways to get tcpdump
Package managers
- Homebrew
brew install tcpdump
About tcpdump
tcpdump captures packets from a network interface and prints or saves them, filtering with Berkeley Packet Filter expressions. It is present on essentially every Unix system and its pcap files are readable by every other analysis tool.
Strengths
- Available on practically every Unix system, including embedded ones
- Writes standard pcap files that every other tool can read
Limitations
- Needs elevated privileges to capture
- Output is dense and takes practice to read
Details
- Pricing
- FreeFree and open source under the BSD licence.
- License
- BSD-3-Clause
- Developer
- The Tcpdump Group
- Platforms
- Windows, macOS, Linux, Command line
- How it runs
- Downloadable app
- Best suited for
- The classic command-line packet capture and analysis tool
- Categories
- Network tools
- Last verified
- Added
- Provenance
- Selected from the TechWalrus Resource Hub (Cybersecurity & Pentesting); facts checked against the developer's own pages, 3 sources on file.