centos防火牆指令碼編寫

1、清空防火牆規則

iptables -f

iptables -l -n

vim aa.sh

#!/bin/bash

echo
"1)放行埠
2)封鎖埠
3)放行ip
4)封鎖ip"
awk(
)read -ep "請輸入你的操作：" name
case $name in
1)while true
doread -ep "請輸入要放行的埠:" duan
echo
"正在放行...."
iptables -i input -p tcp --dport $duan
-j accept
sleep 3
echo
"放行規則新增成功"
awkdone;;
2)while true
doread -ep "請輸入要放行的埠:" duan
echo
"正在放行...."
iptables -i input -p tcp -dport $duan
-j drop
sleep 3
echo
"放行規則新增成功"
awkdone;;
3)while true
doread -ep "請輸入要封鎖的ip位址": ip
echo
"正在放行...."
iptables -i input -s $ip
-j accept
sleep 3
echo
"放行規則新增成功"
awkdone;;
4)while true
doread -ep "請輸入要封鎖的ip位址": ip
echo
"正在封鎖...."
iptables -i input -s $ip
-j drop
sleep 3
echo
"封鎖成功"
awkdone;;
*)echo
"輸入有誤，退出指令碼"
exit
esac

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