How to use Linux as a PPPOE server (1)

In many environments, we all need to use Linux as PPPOE servers. In contrast to Windows, Linux emphasizes the use of command lines. Therefore, we will use the structure of the network topology to analyze the usage of the command code involved in Linux PPPOE server.

Network Topology 1

We can see that there is no difference in the network topology between using Linux as a PPPOE server and using routeros as a PPPOE server, we use the Eth1 Nic to connect to the Internet and set the IP address, subnet mask, and Gateway: 10.70.10.15/255.255.0.0 10.70.0.1). For the sake of security, the Eth0 Nic does not set the IP address or other information ).

Linux network settings

For PPPOE servers in Linux, although you can also set IP addresses for NICs in the graphic interface, but to ensure the accuracy and reliability of nic ip addresses and other information, you must set the IP addresses in the corresponding files, we need to set two NICs this time. The edited files are as follows:

 
 

  
  
[root@localhost network-scripts]# pwd  
  
  
/etc/sysconfig/network-scripts  
  
  
[root@localhost network-scripts]# more ifcfg-eth0  
  
  
TYPE="Ethernet" 
  
  
BOOTPROTO="static" 
  
  
IPADDR="0.0.0.0" 
  
  
DEVICE="lan" 
  
  
HWADDR="00:0C:29:33:69:86" 
  
  
ONBOOT="yes" 
  
  
NETMASK="0.0.0.0" 
  
  
[root@localhost network-scripts]# more ifcfg-eth1  
  
  
TYPE="Ethernet" 
  
  
BOOTPROTO="static" 
  
  
IPADDR="10.70.10.11" 
  
  
DEVICE="wan" 
  
  
HWADDR="00:0C:29:33:69:90" 
  
  
ONBOOT="yes" 
  
  
NETMASK="255.255.0.0" 
  
  
GATEWAY="10.70.0.1" 
 
 

Linux PPPOE server settings process, we focus on look at the ifcfg-eth1 configuration files, which ONBOOT = "yes" is a must, can ensure that the system starts the network card automatically connected to the network, the gateway information is manually added to ensure that there is a gateway can access the external network, as long as the ifcfg-eth0 file to ensure that the ONBOOT = "yes" can be, of course, like in routeros, we define the Internet port name as wan and the Intranet port name as lan.