iptables交互配置脚本【Linux运维之道之脚本案例】

整个脚本是利用控制流（循环语句）实现一个交互的效果，再利用判断和read来实现配置

虽然有200多行代码，细看其实结构很清晰明了，一看就懂！

不过，为了能拿上台面加了很多字体颜色，不止是为了交互体验，也为了让关键字或者提示更加醒目。

同样可以用此结构来实现其他service的配置，个人感觉交互式的配置更直观、更简洁明了，我写了几个类似的交互配置的脚本都经常在工作中使用

代码奉上,后面附个运行截图:

#!/bin/bash

while [ "1" == "1" ]

do

clear

echo "———————-menu————————"

echo -e "\033[49;32;1m(1) 重启\033[49;35;1miptables\033[0m "

echo -e "\033[49;32;1m(2) 添加\033[49;35;1miptables\033[49;32;1m规则\033[0m "

echo -e "\033[49;32;1m(3) 删除\033[49;35;1miptables\033[49;32;1m规则\033[0m "

echo -e "\033[49;32;1m(4) 关闭\033[49;35;1miptables\033[0m "

echo -e "\033[49;32;1m(5) 保存\033[49;35;1miptables\033[49;32;1m规则(输完ACL后要记得保存和查看)\033[0m "

echo -e "\033[49;32;1m(6) 查看\033[49;35;1miptables\033[49;32;1m状态\033[0m "

echo -e "\033[49;32;1m(7) 添加\033[49;35;1miptables\033[49;32;1m控制列表\033[0m "

echo -e "\033[49;32;1m(0) 退出脚本\033[0m "

echo "————————————————————"

echo -en "\033[49;31;1m 请输入数字0-7:  \033[0m"

read num

if [[ "${num}" =~ "^$" ]];

then

echo -e "\033[49;31;5m 请输入0-7中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${num}" =~ "^[a-zA-Z]+$" ]];

then

echo -e "\033[49;31;5m 请输入0-7中的数字!或者Ctrl+C退出! \033[0m"

else

#if [ ${num} -lt 0 -o ${num} -gt 7 ]

if [[ "${num}" =~ "[8-9]" ]];

then

echo -e "\033[49;31;5m 请输入0-7中的数字!或者Ctrl+C退出! \033[0m"

else

if [ "${num}" == "1" ]

then

service iptables restart&

else

if [ "${num}" == "2" ]

#######################################################

then

while [ "1" == "1" ]

do

clear

echo "———————-add ACL———————"

echo -e "\033[49;32;1m(1) 针对源\033[49;35;1mIP\033[49;32;1m放行添加\033[0m "

echo -e "\033[49;32;1m(2) 针对服务器\033[49;35;1m端口\033[49;32;1m放行添加 \033[0m "

echo -e "\033[49;32;1m(3) 针对有\033[49;35;1mIP和端口\033[49;32;1m的规则添加\033[49;35;1m（这里要参数IP和端口 例如:1.1.1.1/255.255.0.0 80）\033[0m "

echo -e "\033[49;32;1m(4) 自定义完整语句添加 \033[0m "

echo -e "\033[49;32;1m(0) 返回上一级 \033[0m "

echo "——————————————————————"

echo -en "\033[49;31;1m 请输入数字0-4: \033[0m"

read aclnum

if [[ "${aclnum}" =~ "^$" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${aclnum}" =~ "^[a-zA-Z]+$" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${aclnum}" =~ "[5-9]" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

elif [ "${aclnum}" == "1" ]

then

read ip

iptables -A INPUT -s ${ip} -p tcp -j ACCEPT

service iptables save

elif [ "${aclnum}" == "2" ]

then

read port

iptables -A INPUT -p tcp -s 0/0 --dport ${port} -j ACCEPT

service iptables save

elif [ "${aclnum}" == "3" ]

then

read ip port

iptables -A INPUT -p tcp -s ${ip} --dport ${port} -j ACCEPT

service iptables save

elif [ "${aclnum}" == "4" ]

then

read addacl

`${addacl}`

service iptables save

else

break

fi

fi

fi

echo -n "是否想继续添加,回车或Y继续，按N返回上一级！: [y/n]:"

read contine

if [ "${contine}" == "n" -o "${contine}" == "N" ]

then

break

fi

done

#######################################################

else

if [ "${num}" == "3" ]

then

while [ "1" == "1" ]

do

clear

echo "———————delete ACL———————-"

echo -e "\033[49;32;1m(1) 针对源\033[49;35;1mIP\033[49;32;1m删除\033[0m "

echo -e "\033[49;32;1m(2) 针对服务器\033[49;35;1m端口\033[49;32;1m删除 \033[0m "

echo -e "\033[49;32;1m(3) 针对有\033[49;35;1mIP和端口\033[49;32;1m的规则删除\033[49;35;1m（这里要参数IP和端口 例如:1.1.1.1/255.255.0.0 80）\033[0m "

echo -e "\033[49;32;1m(4) 自定义完整语句删除 \033[0m "

echo -e "\033[49;32;1m(0) 返回上一级 \033[0m "

echo "————————————————-"

echo -en "\033[49;31;1m 请输入数字0-4: \033[0m"

read aclnum

if [[ "${aclnum}" =~ "^$" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${aclnum}" =~ "^[a-zA-Z]+$" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${aclnum}" =~ "[5-9]" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

elif [ "${aclnum}" == "1" ]

then

read ip

iptables -D INPUT -s ${ip} -p tcp  -j ACCEPT

service iptables save

elif [ "${aclnum}" == "2" ]

then

read port

iptables -D INPUT -p tcp -s 0/0 --dport ${port} -j ACCEPT

service iptables save

elif [ "${aclnum}" == "3" ]

then

read ip port

iptables -D INPUT -p tcp -s ${ip} --dport ${port} -j ACCEPT

service iptables save

elif [ "${aclnum}" == "4" ]

then

read deleteacl

`${deleteacl}`

service iptables save

else

break

fi

fi

fi

echo -n "是否想继续删除,回车或Y继续，按N返回上一级！: [y/n]:"

read contine

if [ "${contine}" == "n" -o "${contine}" == "N" ]

then

break

fi

done

###################################################################

else

if [ "${num}" == "4" ]

then

echo -e "`service iptables stop&` "

else

if [ "${num}" == "5" ]

then

echo -e "`service iptables save&`"

else

if [ "${num}" == "6" ]

then

echo -e "`service iptables status&`"

else

##################################################################

if [ "${num}" == "7" ]

then

while [ "1" == "1" ]

do

clear

echo "———————list ACL———————-"

echo -e "\033[49;32;1m(1) 看当前正在使用的规则集 \033[0m "

echo -e "\033[49;32;1m(2) 查看每个策略或每条规则、每条链的简单流量统计\033[0m "

echo -e "\033[49;32;1m(3) 查看NAT表 \033[0m "

echo -e "\033[49;32;1m(4) 自定义查看 \033[0m "

echo -e "\033[49;32;1m(0) 退回上一级\033[0m "

echo "————————————————-"

echo -en "\033[49;31;1m 请输入数字0-4: \033[0m"

read aclnum

if [[ "${aclnum}" =~ "^$" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${aclnum}" =~ "^[a-zA-Z]+$" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

else

if [[ "${aclnum}" =~ "[5-9]" ]];

then

echo -e "\033[49;31;5m 请输入0-4中的数字!或者Ctrl+C退出! \033[0m"

elif [ "${aclnum}" == "1" ]

then

iptables -L

elif [ "${aclnum}" == "2" ]

then

iptables -L -n -v

elif [ "${aclnum}" == "3" ]

then

iptables -L -t nat

elif [ "${aclnum}" == "4" ]

then

read listacl

`${listacl}`

else

break

fi

fi

fi

echo -n "是否想继续查看,回车或Y继续，按N返回上一级！: [y/n]:"

read contine

if [ "${contine}" == "n" -o "${contine}" == "N" ]

then

break

fi

done

################################################

else

exit

fi

fi

fi

fi

fi

fi

fi

fi

fi

fi

echo -n "按回车或者Y返回上一级，按N退出程序！[y/n]:"

read contine

if [ "${contine}" == "n" -o "${contine}" == "N" ]

then

exit

fi

done