Last updated on November 17, 2020 by Dan Nanni
tcpreplay
is a suite of command-line utilities that are used to replay previously captured packet dumps in a real network. In order to use tcpreplay
, you first need to capture live network traffic using packet capture tools such as tcpdump, rewrite TCP/IP packet headers of the captured packets appropriately (usually MAC and IP addresses), and then re-inject the packets on to any arbitrary network under consideration.
tcpreplay
is useful when you are testing network devices and middleware, such as routers, switches, firewalls and intrusion detection/prevention systems, because it allows you to test the devices under a controlled environment using reproducible scenarios.
If you would like to install tcpreplay
on Linux, you can refer to the following distro-specific instructions.
tcpreplay
on Ubuntu or Debian$ sudo apt-get install tcpreplay
tcpreplay
on Fedora$ sudo yum install tcpreplay
tcpreplay
on CentOS/RHEL 5tcpreplay
using yum
.
$ sudo yum install tcpreplay
tcpreplay
on CentOS/RHEL 6 and higherYou need to build tcpreplay
from the source and install it manually as follows.
$ sudo yum groupinstall "Development Tools" $ sudo yum install libpcap-devel $ wget http://downloads.sourceforge.net/project/tcpreplay/tcpreplay/3.4.4/tcpreplay-3.4.4.tar.gz $ tar xvfvz tcpreplay-3.4.4.tar.gz $ cd tcpreplay-3.4.4 $ ./configure --enable-dynamic-link $ make $ sudo make install
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