mknod /dev/hitbox c 62 0

mknod /dev/nistnet c 62 1

chown root /dev/hitbox

chown root /dev/nistnet

mknod /dev/mungebox c 63 0

chown root /dev/mungebox

mknod /dev/spybox c 64 0

chown root /dev/spybox

modprobe nistnet可以将这个放到/etc/rc.local中，以便重启后继续可以使用例如：[root@nist-01 ~]# more /etc/rc.local

#!/bin/sh

#

# This script will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't

# want to do the full Sys V style init stuff.touch /var/lock/subsys/local

/etc/init.d/Load.Nistnet

mknod /dev/hitbox c 62 0

mknod /dev/nistnet c 62 1

chown root /dev/hitbox

chown root /dev/nistnet

mknod /dev/mungebox c 63 0

chown root /dev/mungebox

mknod /dev/spybox c 64 0

chown root /dev/spybox

modprobe nistnet【使用】延迟命令使用：[root@nist-01 2.6.9-42.ELsmp]# cnistnet -G

Emulator is: Off

Average processed packet overhead 0 usec

Average unprocessed packet overhead 0 usec

Average hash tries 0

[root@nist-01 2.6.9-42.ELsmp]# cnistnet -a 0.0.0.0 0.0.0.0 --delay 80 0

addnistnet: 0.0.0.0:0 to 0.0.0.0:0 (prot 0 cos 0),

delay 80.000000 (sigma 0.000000 corr 0.000000),

bandwidth 0, drop 0.000000 (corr 0.000000),

dup 0.000000 (corr 0.000000),

drdmin 0, drdmax 0, drdcongest 0

[root@nist-01 2.6.9-42.ELsmp]# cnistnet -u

[root@nist-01 2.6.9-42.ELsmp]# cnistnet -G

Emulator is: On

Average processed packet overhead 3 usec

Average unprocessed packet overhead 0 usec

Average hash tries 0说明，参数80表示延迟80ms，0表示浮动区间加入想实现网段-网段的延迟，可以将一端改为特定的网段(默认以0为mask)，比如目的是192.168.1.0/24网段的包全部延迟 30mscnistnet -u -a 0.0.0.0 192.168.1.0 --delay 30 0注意，这里如果源也要固定到一个网段，比如想要192.168.2.0/24到192.168.1.0/24, 这样子的话就没法做了cnistnet -u -a 192.168.2.0 192.168.1.0 --delay 30 0这样是不起作用的，只有在一端是0.0.0.0的时候，nistnet才会认为是在处理网段。【效果】