用U盘安装CentOS 6.4 + Windows 7双系统 （Win 7下安装 CentOs 6.4) （安装见本文下面的连接），但是有了系统怎么可以不联网，太痛苦了！
这一篇是 CentOS 6.4 电信ADSL 拨号连接的配置，亲测
参考：CentOS 6.4 电信宽带链接网络配置
1.下载 rp-pppoe-3.8.tar.gz
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免费下载地址在
用户名与密码都是
具体下载目录在 /2015年资料/1月/11日/CentOS 6.4 电信ADSL拨号上网网络配置
下载方法见
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2.安装 rp-pppoe（对文件所在文件夹右键在终端打开）
解压 rp-pppoe-3.8.tar.gz ：
#tar -zxf rp-pppoe-3.8.tar.gz
进入生成的目录：
#cd rp-pppoe-3.8
在所在目录内运行脚本 go：
#./go
将自动进行编译和安装
3、网络配置 （红色为输入，蓝色为注释）
[root@Cheng liaojch3]#
Welcome to the Roaring Penguin PPPoE client setup. First, I will runsome checks on your system to make sure the PPPoE client is installedproperly…Looks good! Now, please enter some information:USER NAME>>> Enter your PPPoE user name (default cz743720): Do you want the link to come up on demand, or stay up continuously?If you want it to come up on demand, enter the idle time in secondsafter which the link should be dropped. If you want the link tostay up permanently, enter ‘no’ (two letters, lower-case.)NOTE: Demand-activated links do not interact well with dynamic IPaddresses. You may have some problems with demand-activated links.>>> Enter the demand value (default no): no （这里填 no 或 直接回车）DNSPlease enter the IP address of your ISP’s primary DNS server.If your ISP claims that ‘the server will provide DNS addresses’,enter ‘server’ (all lower-case) here.If you just press enter, I will assume you know what you are doing and not modify your DNS setup.
>>> Enter the DNS information here:
Please enter the IP address of your ISP’s secondary DNS server.
If you just press enter, I will assume there is only one DNS server.
>>> Enter the secondary DNS server address here: 202.96.128.143 （备用 DNS 地址，，同样查一下）
PASSWORD>>> Please enter your PPPoE password: Adjusting /etc/ppp/pppoe.confAdjusting /etc/resolv.conf (But first backing it up to /etc/resolv.conf-bak)Adjusting /etc/ppp/pap-secrets and /etc/ppp/chap-secrets (But first backing it up to /etc/ppp/pap-secrets-bak) (But first backing it up to /etc/ppp/chap-secrets-bak)Congratulations, it should be all set up!Type ‘pppoe-start’ to bring up your PPPoE link and ‘pppoe-stop’ to bringit down. Type ‘pppoe-status’ to see the link status.[root@Cheng liaojch3]# pppoe-start （ 用 pppoe-start 进行连接）. Connected! (连接成功，你可以用 ping 进行测试一下）
4、上网命令（用 root 权限）
拨号上网 pppoe-start断开上网 pppoe-stop查看状态 pppoe-status
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本文永久更新链接地址：
我的眼泪流了下来，浇灌了下面柔软的小草，
