Re: Libpcap based: packet generator + capture file editor + bridge for IEEE802.3 on FreeBSD


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).

I haven't tried either one of these, but will note that my favorite
program in this space - if one wants to hack interactively - is
"netdude", which is available from sourceforge. FWIW.

allman



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