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HomeOperation and MaintenanceLinux Operation and MaintenanceHow to add iptables firewall rules in linux

How to add iptables firewall rules in linux

May 24, 2023 pm 06:34 PM
linuxiptables

iptables设置

 *filter
:input drop [0:0]
:forward accept [0:0]
:output accept [49061:9992130]
-a input -i lo -j accept   不开启会有很多服务无法使用,开启回环地址
-a input -p icmp -j accept   允许icmp包通过,也就是允许别人ping自己
-a input -m state --state related,established -j accept
-a input -p tcp -m tcp --dport 21 -j accept
-a input -p tcp -m tcp --dport 25 -j accept
-a input -p tcp -m tcp --dport 80 -j accept
-a input -p tcp -m tcp --dport 110 -j accept
-a input -p tcp -m tcp --dport 8080 -j accept
-a input -p tcp -m tcp --dport 10337 -j accept 这是我自己的ssh连接端口
 -a input -j reject --reject-with icmp-host-prohibited
commit

注释:使用的时候要把规则后的中文注释去掉,上面也可以写成多端口方式

-a input -p tcp -m multiport --dports 21,25,80,110,3306,8080,10337 -j accept

Linux有哪些版本

Linux的版本有:Deepin、UbuntuKylin、Manjaro、LinuxMint、Ubuntu等版本。其中Deepin是国内发展最好的Linux发行版之一;UbuntuKylin是基于Ubuntu的衍生发行版;Manjaro是基于Arch的Linux发行版;LinuxMint默认的Cinnamon桌面类似Windows XP简单易用;Ubuntu则是以桌面应用为主的Linux操作系统。

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