1 服务端

(1) 安装pppoe，安装完成后，会有pppoe-server命令

yum install rp-pppoe

安装完成后，会在动在/etc/ppp目录下生成pppoe-server-options文件。

(2) 修改服务配置文件

vi /etc/ppp/pppoe-server-options
# PPP options for the PPPoE server
# LIC: GPL
#  认证方式为chap, 还可以配置为pap方式
# win7密码是加密的，可能不支持pap，所以测试最好是chap
require-chap
login
lcp-echo-interval 10
lcp-echo-failure 2

(3) 修改配置文件 /etc/ppp/options

vi /etc/ppp/options
# local    # local for chap
auth       # auth for chap
lock        # lock for chap

(4) 添加账户

(a) 若采用chap认证方式

vi /etc/ppp/chap-secrets
# Secrets for authentication using CHAP
# client        server  secret                  IP addresses
"test"          *       "12345678"                   *

(b) 若采用pap认证方式

vi /etc/ppp/pap-secrets
# Secrets for authentication using PAP
# client        server  secret                  IP addresses
"test"          *       "12345678"                   *

(5) 设置支持IP转发

vi /etc/sysctl.conf
net.ipv4.ip_forward = 1　　# 修改为1

(6) 启动pppoe

pppoe-server -I eth0 -L 192.168.11.101 -R 192.168.22.200 -N 10 -F
# -L 虚拟PPPoE接口，不是eth0的IP地址(可以不设置eth0的IP地址)
# -R 起始地址
# -N 地址个数
# -F 前台运行，默认后台运行

2 客户端

2.1 win7 客户端

(1) 添加pppoe客户端，如果已经存在，则直接连接

(a) 打开网络共享中心

(b) 设置新的连接和网络

(2) 输入账号和密码，开始连接

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2.2 centos 客户端

(1) 安装 rp-pppoe 包

yum install rp-pppoe

(2)使用root用户，执行 pppoe-setup 生成配置

pppoe-setup
# 按照提示输入对应内容即可
Ethernet Interface: eth0
User name:          test
Activate-on-demand: No
DNS:                Do not adjust
Firewalling:        NONE
User Control:       yes
Accept these settings and adjust configuration files (y/n)? y
Adjusting /etc/sysconfig/network-scripts/ifcfg-ppp0
Adjusting /etc/ppp/chap-secrets and /etc/ppp/pap-secrets
  (But first backing it up to /etc/ppp/chap-secrets.bak)
  (But first backing it up to /etc/ppp/pap-secrets.bak)
Congratulations, it should be all set up!
Type '/sbin/ifup ppp0' to bring up your xDSL link and '/sbin/ifdown ppp0'
to bring it down.
Type '/sbin/pppoe-status /etc/sysconfig/network-scripts/ifcfg-ppp0'
to see the link status.

(3) 运行

[root@centos ~]# ifdown ppp0       // 停止
[root@centos ~]# ifup ppp0         // 运行
[root@centos ~]# 
[root@centos ~]# ifconfig          // 查看网口配置
ppp0      Link encap:Point-to-Point Protocol  
          inet addr:192.168.22.201  P-t-P:192.168.11.101  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:17 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:220 (220.0 b)  TX bytes:265 (265.0 b)

(4) 查看日志信息

[root@centos ~]# tail -f /var/log/messages
Nov 12 10:26:10 centos pppd[7389]: pppd 2.4.5 started by root, uid 0
Nov 12 10:26:10 centos pppd[7389]: Using interface ppp0
Nov 12 10:26:10 centos pppd[7389]: Connect: ppp0 <--> /dev/pts/1
Nov 12 10:26:10 centos pppoe[7390]: PPP session is 2 (0x2)
Nov 12 10:26:11 centos pppd[7389]: CHAP authentication succeeded: Access granted
Nov 12 10:26:11 centos pppd[7389]: CHAP authentication succeeded
Nov 12 10:26:36 centos pppd[7389]: local  IP address 192.168.22.201
Nov 12 10:26:36 centos pppd[7389]: remote IP address 192.168.11.101