iptables 教程&iptables拒绝端口

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http://www.google.com.hk/search?q=iptables+%E6%95%99%E7%A8%8B&hl=en&safe=active&prmd=ivns&ei=JqusTYSaCYaGvAPf2PDiAw&start=0&sa=N

http://www.google.com.hk/search?hl=en&source=hp&q=iptables%E6%8B%92%E7%BB%9D%E7%AB%AF%E5%8F%A3&aq=f&oq=&aqi=

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http://www.cublog.cn/u2/71462/showart_1001300.html

http://hi.baidu.com/tjhaocai/blog/item/0155a7a290af84a4caefd02c.html/cmtid/df63f70ad6820135b0351d2d

iptables 拒绝端口范围
比如我在iptables中拒绝3000以上的端口号反问我的vsftp
iptables -A INPUT --dport 3001:65535 -j DROP
iptalbes 放过yum端口
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

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