Tcpreplay

lastmod 2025-12-08created 2024-12-037 edits

A tool that resends traffic stored in PCAP files to the network.

Replaying PCAP files

You can replay PCAP files to reproduce network traffic.

tcpreplay --intf1=eth0 example.pcap

• --intf1 - The interface to send traffic on.
• --pps - Sets the number of packets to send per second.

See also

• Network Simulator
• pcap
• tcpdump
• scapy
• WireMock - flexible, open source API mocking
• tc (Traffic Control) - Part of the iproute2 package.

Favorite site

• Tcpreplay - Pcap editing and replaying utilities
• Resending packets with TCPReplay
• (Linux) How to resend network pcap packets with tcpreplay, injecting packets
• tcpreplay stream test method