shell 脚本实现ip和端口的封锁和放行

!/bin/bashecho \"1.放行的端口2.封锁的端口3.放行ip4.封锁ip\"read -ep \"请选择你的操作:\" menucase menu in1)while true;doread -ep \"请输入要放行的端口:\" portiptables -I INPUT -p tcp --dport port -j ACCEPTiptables -I INPUT -p tcp --dport port -j ACCEPTecho \"port放行成功\"breakdone;;2)while true;doread -ep \"请输入要封锁的端口:\" portiptables -I INPUT -p tcp --dport port -j REJECTiptables -I INPUT -p tcp --dport port -j REJECTecho \"port封锁成功\"breakdone;;3)while true;doread -ep \"请输入要放行ip:\" ipiptables -I INPUT -s ip -j ACCEPTecho \"ip放行成功\"breakdone;;4)while true;doread -ep \"请输入要封锁的ip:\" ipiptables -I INPUT -s ip -j DROPecho \"$ip封锁成功\"breakdone;;*)echo \"输入有误！！！\"esac