Thanks Brian.
Simply put Bit-Twist is smaller, do more, medium specific (Ethernet II - IEEE
802.3) suite.
Bittwist (packet generator) does not differs much from tcpreplay program. I
would admit if you say tcpreplay can do everything that bittwist can do. But
bittwist implementation is much simpler and it uses only libpcap library
without libnet dependency.
Its capture file editor, bittwiste, allow you to change most fields in
Ethernet, ARP, IP, ICMP, TCP, and UDP headers and you can specify your own
payload. It is possible for the payload to cover the ICMP, TCP, or UDP header
itself (checksum is corrected automatically). Tcprewrite (part of Tcpreplay
suite) allows you to change src/dst MAC/IP/port only, but, it supports VLAN
frames (Bit-Twist does not).
Bittwistb (bridge) aids the injection of packets from an end host which get
forwarded across different LAN segments. It supports multiple ports (up to 8,
or more if you want it to). Tcpbridge supports only 2.
Simply put, Bit-Twist is created not to compete with any existing similar
projects, i.e. Tcpreplay, but it is here in favor of freedom of choice :) and
also, Bit-Twist is currently being used as a practical teaching material in
Computer Network classes.
Brian Candler <[EMAIL PROTECTED]> wrote: On Sun, Apr 16, 2006 at 08:02:04AM
-0700, Yeow C.H. wrote:
> It is designed to compliment tcpdump, which by itself has done a great
> job
> in capturing network traffic. With Bit-Twist, you can now regenerate the
> captured traffic onto a live network. Packets are generated from saved
> tcpdump
> capture file (trace file).
Interesting - how does it differ from /usr/ports/net-mgmt/tcpreplay ?
Regards,
Brian.
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