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

[Yeow C.H.]

For those who are interested with this libpcap based networking suite,  please do check out Bit-Twist 0.7, development release here:
  1. http://bittwist.sourceforge.net/ (Bit-Twist homepage)
  2. http://sourceforge.net/projects/bittwist/ (SF.net project page)
  
    Bit-Twist is a simple and powerful libpcap-based Ethernet II (IEEE 802.3) 
    packet generator that comes complete with a comprehensive pcap capture file 
    editor and a multiport link speed capability Ethernet bridge! 
     
    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). 
     
    Bit-Twist also comes with a comprehensive trace file editor to allow you to 
    change the contents of a trace file. You can also append your own payload to 
    each packet in the trace file (IP/TCP/UDP/ICMP header checksum is corrected 
    automatically). 
     
    Although packet generator is generally useful for simulating networking traffic, 
    testing firewall/IDS/IPS, or troubleshooting various network problems, Bit-Twist 
    (together with tcpdump) has also proven itself to be useful for educational  
    purposes especially in Computer Network classes. As with most of the existing 
    packet generators, this is not immediately trivial (e.g. many times, they are  
    complex, huge, and overloaded with features). Bit-Twist prevails here with its 
    simplicity in its implementation, usage, and deployment which helps cut the  
    learning curve of students' and general users alike. 
     
    Currently, Bit-Twist compiles on *BSD and Linux and it works under Ethernet II 
    (802.3) network with a MTU of up to 1500 bytes on 10Mbps (10Base-T Ethernet) or 100Mbps (Fast Ethernet) link speed.
  
		
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