Linux下实现IP映射的方法（ip映射Linux）

Linux系统是一款稳定的操作系统，使用得十分广泛，有的时候我们需要实现IP的映射才能访问网络，下面就教大家在Linux系统下实现IP映射的方法。

首先安装vim或vi编辑器输入命令：

sudo apt-get install vim/vi

然后打开系统的路由文件：

sudo vi /etc/sysctl.conf

这里可以看到route_localnet设置为“no”状态，将其设置为“yes”：

# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1
#Controls IP packet forwarding
net.ipv4.conf.default.rp_filter=1
net.ipv4.conf.all.rp_filter=1
#Do not accept source routing
net.ipv4.conf.default.accept_source_route=0
net.ipv4.conf.all.accept_source_route=0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq=0
#Enables source route verification
net.ipv4.conf.default.rp_filter=1

#To accept IPv4 IP Map
net.ipv4.conf.all.route_localnet=1

接着在编辑就行设置IP映射：

# IP address of your router
IPADDR="192.168.20.10"

# Your gateway (your router)
GATEWAY="192.168.20.1"
# subnet mask, 255.255.255.0
NETMASK="255.255.255.0"
# Broadcast address
BROADCAST="192.168.20.255"
# Your network
NETWORK="192.168.20.0"
# Your DNS server, such as 8.8.8.8
DNS1="8.8.8.8"
# Second DNS server, such as 8.8.4.4
DNS2="8.8.4.4"
# The IP you are mapping
MAPPED_IP="192.168.20.99"

最后打开Linux的iptables设置网络桥接：

iptables –t nat –A POSTROUTING –s $NETWORK –j SNAT –to-source $MAPPED_IP

完成以上步骤即可实现Linux中IP映射的操作，这样就能访问网络了。IP映射方法是一个十分有用的技术，在操作的过程中可以借助Linux的强大功能实现我们希望的访问。