Linux 简单的网络配置练习一
有两个网段：网段一 192.168.6.XX
网段二 192.168.7.XX
我们将这两个网段通一段Linux Server 连进来，让它们可以互相访问.
网络分布架构图如下：
1. Linux Route Server 配置:
1)添加网卡 #ifconfig 查看当前最大的网卡号,如eth0
Last login: Fri Aug 14 11:26:16 2009
[root@sql root]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:D6:7B:EF
inet addr:192.168.6.1 Bcast:192.168.6.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:684 errors:0 dropped:0 overruns:0 frame:0
TX packets:220 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:70820 (69.1 Kb) TX bytes:18565 (18.1 Kb)
Interrupt:5 Base address:0x2000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3450 errors:0 dropped:0 overruns:0 frame:0
TX packets:3450 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:235617 (230.0 Kb) TX bytes:235617 (230.0 Kb)
2.修改网卡eth0 的配置信息：vi /etc/sysconfig/network-scripts/ifcfg-eth0
[root@router root]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
BROADCAST=192.168.6.255
IPADDR=192.168.6.2
NETMASK=255.255.255.0
NETWORK=192.168.6.0
ONBOOT=yes
USERCTL=no
PEERDNS=no
TYPE=Ethernet
GATEWAY=192.168.6.2
2. 添加新网卡eth1：vi /etc/sysconfig/network-scripts/ifcfg-eth1
[root@router root]# vi /etc/sysconfig/network-scripts/ifcfg-eth1
# Please read /usr/share/doc/initscripts-*/sysconfig.txt
# for the documentation of these parameters.
USERCTL=no
PEERDNS=yes
TYPE=Ethernet
DEVICE=eth1
HWADDR=00:0c:29:f5:07:d4
BOOTPROTO=none
NETMASK=255.255.255.0
ONBOOT=yes
IPADDR=192.168.7.2
NETWORK=192.168.7.0
BROADCAST=192.168.7.255
添加上新网卡后，运行命令重新装载网卡
# /etc/init.d/network reload
3. 配置route
将192.168.7 网段和192.168.6 网段的都添加进路由
添加网段：
#route add –net 192.168.6.0 /
>netmask 255.255.255.0 dev eth0
#route add –net 192.168.6.0 /
>netmask 255.255.255.0 dev eth0
添加网关
#route add default gw 192.168.6.2
[root@router root]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.7.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.6.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 192.168.6.2 0.0.0.0 UG 0 0 0 eth0
设定完route 后,执行命令echo “1” > /proc/sys/net/ipv4/ip_forward 启动封包转递功能
[root@router root]# echo “1” > /proc/sys/net/ipv4/ip_forward
4. PC上的网设定
如：192.168.7 网段的设定
192.168.6 网段的设定
测试：在192.168.6.11这台电脑上 ping 另一个网段的ip: 192.168.7.11
–测试成功–
经历一种身体下了地狱，眼睛进入天堂，灵魂归入故里。
