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iptables - [RI] chain rule num rule-specification[option]
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iptables -D chain rule num[option]
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 192.168.5.100 prac1
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 192.168.5.20 rac2
 192.168.5.200 prac2
 10.20.0.20 vrac2
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[root@srv /]# more /proc/cpuinfo | grep "model name"
model name    : Intel(R) Xeon(R) CPU          X3220 @ 2.40GHz
model name  &n ......

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