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                # iptables 常用規則 ****** >[info] #### 基本規則 ~~~ iptables -I INPUT -p tcp --dport 22 -j ACCEPT #允許22端口,即shell連接 iptables -I INPUT -p tcp --dport 80 -j ACCEPT #允許80端口,即網頁連接 iptables -I INPUT -p icmp -j ACCEPT #控制報文協議(Internet Control Message Protocol) iptables -I INPUT -i lo -j ACCEPT #允許回環,即本地可以訪問自己 iptables -I INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT #本機可以訪問其它主機 iptables -A INPUT -j REJECT #除以上規則,其它全拒絕 ~~~ >[info] #### 允許某ip訪問 ~~~ iptables -I INPUT -s 192.168.1.100 -j ACCEPT #單個IP可訪問 iptables -I INPUT -s 192.168.1.0/24 ~~~ >[info] #### 允許
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