iptables路由转发

JDSH0224

已于 2024-02-21 16:16:04 修改

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分类专栏： allwinner 文章标签：服务器网络运维

于 2024-02-21 08:20:19 首次发布

本文链接：https://blog.youkuaiyun.com/chenliang0224/article/details/136202337

版权

#!/bin/sh

echo "start clear iptables table v1.3"



iptables -t nat -F                        
iptables -F INPUT
iptables -F OUTPUT
iptables -F FORWARD

echo "start config ip forward"
echo 1 > /proc/sys/net/ipv4/ip_forward

#set -x

echo "start const iptables"


function configRouteForward()
{
	DNAT_ETH=$1
	DNAT_ADDR=$2
	DNAT_PORT=$5
	DNAT_FORWARD_ADDR=$4
	DNAT_FORWARD_PORT=$3
	SNAT_ETH=$6
	SNAT_ADDR=$7
	SNAT_NETMASK=$8
	
	echo "Config route forward: 
			DNAT_ETH=${DNAT_ETH} 
			DNAT_ADDR=${DNAT_ADDR} 
			DNAT_PORT=${DNAT_PORT} 
			DNAT_FORWARD_ADDR=${DNAT_FORWARD_ADDR} 
			DNAT_FORWARD_PORT=${DNAT_FORWARD_PORT} 
			SNAT_ETH=${SNAT_ETH} 
			SNAT_ADDR=${SNAT_ADDR} 
			SNAT_NETMASK=${SNAT_NETMASK}"
	
	set -x
	iptables -t nat -A PREROUTING -i $DNAT_ETH -d $DNAT_ADDR -p tcp --dport $DNAT_FORWARD_PORT -j DNAT --to $SNAT_ADDR:$DNAT_PORT
	iptables -t nat -A POSTROUTING -o $SNAT_ETH -