Wireless Internet router bridging program

Scenarios

condition:

First, we have an Internet access Wi-Fi, we assume for the wifi.

Now we have two routers A and B, two servers SA and SB, connected to a router on each server.

aims:

By connecting a computer to the A, we can log on to the server SA, and the Internet in SA.

Open A router configuration page, I used here is tplink,

Setup Mode

Click Next, then we choose it to be bridged wifi

Open the list wifi, wifi connection that we want

Then set the name and the secret encryption key, click Next, you might see, it is because you choose to use that wifi is 13 channels, so you need to put your router is set to channel 13

OK, modified to channel 13

And then click Next, enter the router password

Prompted to restart

After waiting for the reboot is complete, the router A landing page management

A bridge to router wifi, configuration.

Next, configure the LAN Server A

SA has four Ethernet ports, we assume that the fourth network port is dhcp,

A SA through the network cable and the fourth port is connected to the network, the first three port bridge in a bridge network to br0.

xxx@hostname:~$ ifconfig
br0       Link encap:Ethernet  HWaddr 00:e0:4c:68:35:cb  
          inet addr:192.168.10.10  Bcast:192.168.10.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

p1p1      Link encap:Ethernet  HWaddr 00:e0:4c:68:35:cb  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Memory:d0800000-d081ffff 

p2p1      Link encap:Ethernet  HWaddr 00:e0:4c:68:35:cc  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Memory:d0700000-d071ffff 

p3p1      Link encap:Ethernet  HWaddr 00:e0:4c:68:35:cd  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Memory:d0600000-d061ffff 

p4p1      Link encap:Ethernet  HWaddr 00:e0:4c:68:35:ca  
          inet addr:192.168.1.199  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::2e0:4cff:fe68:35ca/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1137 errors:0 dropped:66 overruns:0 frame:0
          TX packets:471 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:505826 (505.8 KB)  TX bytes:44957 (44.9 KB)
          Memory:d0900000-d091ffff

我们看到第四个网口分到的IP为192.168.1.199

接下来设置网卡

sudo vi /etc/network/interfaces,以下是我的配置文件，这台机器有四个网口，p1p1，p2p1 , p3p1 ，p4p1，

其中前三个桥接为一个网桥br0，p4p1则设置成了固定IP 192.168.1.199，

并且配置文件中p4p1的网关要设置成和wifi的网关一致，我这里是192.168.199.1

文件内容：

# 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 br0
iface lo inet loopback

                                                                                                                                                                                 
iface p1p1 inet manual
iface p2p1 inet manual
iface p3p1 inet manual
#iface p4p1 inet manual
auto p4p1
iface p4p1 inet static
address 192.168.1.199
gateway 192.168.1.1
netmask 255.255.255.0


# Bridge setup
iface br0 inet static
bridge_ports p1p1 p2p1 p3p1
        address 192.168.10.10
        broadcast 192.168.10.255
        netmask 255.255.255.0
        gateway 192.168.10.1

然后，我们重启服务器，使网络配置生效。

我们通过电脑连接到A，然后再远程到服务器SA上，然后尝试看看能不能上网。

xxx@hostname:~$ ping www.baidu.com
PING www.a.shifen.com (39.156.66.18) 56(84) bytes of data.
64 bytes from 39.156.66.18: icmp_seq=1 ttl=52 time=14.5 ms
64 bytes from 39.156.66.18: icmp_seq=2 ttl=52 time=11.5 ms
64 bytes from 39.156.66.18: icmp_seq=3 ttl=52 time=61.6 ms
64 bytes from 39.156.66.18: icmp_seq=4 ttl=52 time=153 ms
64 bytes from 39.156.66.18: icmp_seq=5 ttl=52 time=38.4 ms
64 bytes from 39.156.66.18: icmp_seq=6 ttl=52 time=135 ms
^C
--- www.a.shifen.com ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5005ms
rtt min/avg/max/mdev = 11.505/69.104/153.322/55.871 ms

Wireless Internet router bridging program

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