netmon Tcpreplay is a suite of utilities for UNIX systems for editing and replaying network traffic which was previously captured by tools like tcpdump and ethereal/wireshark. The goal of tcpreplay is to provide the means for providing reliable and repeatible means for testing a variety of network devices such as switches, router, firewalls, network intrusion detection and prevention systems (IDS and IPS). Enable if you want the jump to byte offset feature via net-libs/libpcapnav Use net-analyzer/tcpdump for packet decoding feature