Tcpreplay 4.0.5

A practical and handy suite of tools specially designed to help you edit and replay captured network traffic onto your network
Tcpreplay is a lightweight suite of utilities written by Aaron Turner specially for UNIX operations systems and which enables you to use previously captured traffic in the libcap format in order to test various network devices.

What is more, Tcpreplay helps you classify traffic as client or server and rewrite Layer 2, 3 or 4 headers and replay the traffic back onto the network through other devices such as firewalls, routers, IPS's and NIDS. On top of that, Tcpreplay comes with support for both single and dual NIC modes for testing inline devices and sniffing.

To start using Tcpreplay, you shoult run tcpprep against a pcap file in order to generate a cache file capable to split the traffic between client and server. This is useful if you need to test an inline device. You can also use tcprewrite to edit the packets and tcpreplay to replay the pcap onto the network to perform the test.

last updated on:
September 11th, 2014, 3:40 GMT
file size:
2.1 MB
developed by:
Aaron Turner
license type:
operating system(s):
Mac OS X
binary format:
Universal Binary
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1 Screenshot
Tcpreplay - This is a tcreplay sample test along with the usage message displayed by tcpreplay when being run from a Terminal window.
What's New in version 4.0.4
  • Number of packets inaccurate when using --netmap method (#76)
  • Unexpected packet counts with --loop and --cachefile enabled (#75)
  • Improved error messages when interface is a file (#74)
  • Missing interfaces with --listnics option (#67)
read full changelog

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