Ubuntu下双网卡配置路由，实现两个网段互联

作者: Automatic  出自:

因为公司的需要，现在又追加了一个网段A：10.4.1.*/16,而公司原有域为B：10.2.1.*/16，为了使两个网段能够通信，本文的目的就在Ubuntu下设置路由

使两个网段可以互相通信。

1、ubuntu机器配置为双网卡，分别连接两个网段。

#router@proxy:/etc/network$ sudo vi interfaces

dd

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).

# The loopback network interface

auto lo

iface lo inet loopback

# The primary network interface

auto eth0

iface eth0 inet static

address 10.2.1.216

netmask 255.255.0.0

network 10.2.0.0

broadcast 10.2.255.255

gateway 10.2.1.218

# dns-* options are implemented by the resolvconf package, if installed

dns-nameservers 211.93.80.129 211.94.65.97 211.98.4.1

auto eth1

iface eth1 inet static

address 10.4.1.216

netmask 255.255.0.0

network 10.4.0.0

broadcast 10.4.255.255

gateway 10.4.1.10

dns-nameservers 211.93.80.129 211.94.65.97

iface dsl-provider inet ppp

provider dsl-provider

2、打开包转发

编辑/etc/sysctl.conf

把

net.ipv4.ip_forward = 0

改成

net.ipv4.ip_forward = 1