Tcpreplay
A suite of command-line tools for editing captured network traffic and replaying it onto a network.
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1 more ways to get Tcpreplay
Package managers
- Homebrew
brew install tcpreplay
About Tcpreplay
Tcpreplay takes a pcap file captured with tools such as tcpdump or Wireshark, optionally rewrites its Layer 2 to 4 headers, and sends it back onto the wire. Traffic can be replayed at its original timing, at a fixed rate in packets per second or Mbps, or as fast as the hardware allows.
The suite contains six command-line tools and can rewrite MAC and IP addresses, ports, VLAN tags and checksums. It is used to test firewalls, IDS and IPS systems and NetFlow equipment against realistic, repeatable traffic.
Strengths
- Replays captures at original timing, a set rate or line rate
- Rewrites addresses, ports, VLAN tags and checksums
- Documentation with quickstart and task-based guides
Limitations
- Command-line only, with no graphical interface
- Requires existing packet captures to work from
Details
- Pricing
- FreeFree and open source under the GPLv3.
- License
- GPL-3.0
- Developer
- AppNeta
- Platforms
- Command line
- How it runs
- Downloadable app
- Account
- Not required
- Works offline
- Yes
- Best suited for
- Testing network devices and security appliances with repeatable real traffic
- Categories
- Network tools, Developer tools
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Tcpreplay as an alternative
Listings that name Tcpreplay as an alternative.
hping3
Packet crafting tool for TCP/IP testing and probing.
Tcpreplay replays and rewrites existing packet captures at set rates under GPL-3.0, rather than building packets from scratch, so you need captures to start from.
Similar software
Related functionality, not necessarily a direct replacement.
tcpdump
The classic command-line packet capture and analysis tool.
Wireshark
The network protocol analyser: capture traffic and read it packet by packet, with dissectors for hundreds of protocols.
Packet Sender
A utility for sending and receiving TCP, UDP, SSL and DTLS packets to test network services.
iPerf3
Measures how fast a network link really is between two machines you control, which a speed test cannot.
Flent
Network benchmarking tool that runs repeatable tests with netperf and iperf and plots the results.
