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CentOS 6.4 电信ADSL拨号上网网络配置

文章作者:网络世界 上传时间:2019-10-11

注:这里是物理机上网教程,不是虚拟机,虚拟机没这么麻烦~

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!

本文是吐槽和教程的混合体,所以各位看官耐心看~

这一篇是 CentOS 6.4 电信ADSL 拨号连接的配置,亲测

CentOS上网真是个麻烦的事情,它不像Ubuntu一样在安装时就能配置好网络,它会出现各种问题。

参考:CentOS 6.4 电信宽带链接网络配置  http://www.linuxidc.com/Linux/2013-04/83206.htm

首先我的电脑直接插网线后,ifconfig显示找不到eth0。后来仔细一看网线接口根本不亮!后来找了半天终于把驱动找到了,装完驱动插入内核模块后,网线接口亮了,ifconfig也能显示eth0了,说明硬件搞定。【该步骤详情参考这里http://www.linuxidc.com/Linux/2015-01/111598.htm】 

1.下载 rp-pppoe-3.8.tar.gz   

下面是重点,我折腾了半天还是上不去网,后来发现了一些教程说安装一个叫rp-pppoe的拨号软件,于是我安装了,结果还是不行,NetworkManager和network服务重启了无数次还是不行,setup里面改了又改还是不行,我以为要用DHCP服务,还特地安装了DHCP,结果配置不了,比较复杂,毕竟我课程还没到网络原理~于是在拨号失败,DHCP又不会配置时我崩溃了,放弃了一段时间。今晚再次想起来了,心想一定要搞定它!参考这篇文章(http://www.linuxidc.com/Linux/2015-01/111600.htm),里面说rp-pppoe不需要NetworkManager,可以卸载NetworkManager,我心想,我读书少你可别骗我,NetworkManager卸载后连个网络图标都没了,还连个毛毛网。

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看完后不敢轻信,但又想试试,于是结合另一篇教程(http://www.linuxidc.com/Linux/2015-01/111601.htm),开始了终极实验。我特地准备了四个DNS地址,我下决心不用DHCP了,因为从百度百科上看DHCP用于配置局域网,我反正又不用路由器。

免费下载地址在 http://linux.linuxidc.com/

四个DNS分别为:

用户名与密码都是www.linuxidc.com

百度公共DNS:180.76.76.76

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

阿里云公共DNS:223.5.5.5、223.6.6.6

下载方法见 http://www.linuxidc.com/Linux/2013-07/87684.htm

四川省成都市教育网DNS(博主在成都上学):202.115.64.34

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然后开终端,配置rp-pppoe,运行命令

2.安装 rp-pppoe(对文件所在文件夹右键在终端打开)

pppoe-setup
以下为具体过程(#后面的中文是我写的注释):

解压 rp-pppoe-3.8.tar.gz :

[root@KD src]# pppoe-setup
Welcome to the Roaring Penguin PPPoE client setup.  First, I will run
some checks on your system to make sure the PPPoE client is installed
properly...

#tar -zxf rp-pppoe-3.8.tar.gz

Looks good!  Now, please enter some information:

进入生成的目录:

USER NAME

#cd rp-pppoe-3.8

>>> Enter your PPPoE user name (default bp20122999@cer): #帐号填你的帐号(教育网、网通、电信均可)

在所在目录内运行脚本 go:

INTERFACE

#./go

>>> Enter the Ethernet interface connected to the DSL modem
For Solaris, this is likely to be something like /dev/hme0.
For Linux, it will be ethn, where 'n' is a number.
(default eth0):                                        #默认为eth0,可以直接回车默认,或者多此一举手写eth0

将自动进行编译和安装

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 seconds
after which the link should be dropped.  If you want the link to
stay up permanently, enter 'no' (two letters, lower-case.)
NOTE: Demand-activated links do not interact well with dynamic IP
addresses.  You may have some problems with demand-activated links.
>>> Enter the demand value (default no):                #不管这步,直接回车

3、网络配置 (红色为输入,蓝色为注释)

DNS

[root@Cheng liaojch3]# pppoe-setup             (输入 pppoe-setup )

Please 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: 223.5.5.5            #主DNS(上面四个DNS选一个,自己搞其他的也行)
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: 223.6.6.6    #备用DNS

Welcome to the Roaring Penguin PPPoE client setup.  
First, I will run some checks on your system to make sure the PPPoE client is installed properly...

PASSWORD

Looks good!  

>>> Please enter your PPPoE password:                    #你滴密码
>>> Please re-enter your PPPoE password:                #再输一次

Now, please enter some information:

FIREWALLING

USER NAME
>>> Enter your PPPoE user name (default cz743720): cz743720              (输入上网账号)

Please choose the firewall rules to use.  Note that these rules are
very basic.  You are strongly encouraged to use a more sophisticated
firewall setup; however, these will provide basic security.  If you
are running any servers on your machine, you must choose 'NONE' and
set up firewalling yourself.  Otherwise, the firewall rules will deny
access to all standard servers like Web, e-mail, ftp, etc.  If you
are using SSH, the rules will block outgoing SSH connections which
allocate a privileged source port.

INTERFACE
>>> Enter the Ethernet interface connected to the DSL modem
For Solaris, this is likely to be something like /dev/hme0.
For Linux, it will be ethn, where 'n' is a number.
(default eth0): eth0                 (选择你的网卡,默认为 eth0)

The firewall choices are:
0 - NONE: This script will not set any firewall rules.  You are responsible
          for ensuring the security of your machine.  You are STRONGLY
          recommended to use some kind of firewall rules.
1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation
2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway
                for a LAN
>>> Choose a type of firewall (0-2): 0                    #输入0,不开启防火墙

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 seconds after which the link should be dropped.  
If you want the link to stay up permanently, enter 'no' (two letters, lower-case.)

** Summary of what you entered **

NOTE: Demand-activated links do not interact well with dynamic IP
addresses.  You may have some problems with demand-activated links.

Ethernet Interface: eth0
User name:          bp20122999@cer
Activate-on-demand: No
Primary DNS:        223.5.5.5
Secondary DNS:      223.6.6.6
Firewalling:        NONE

>>> Enter the demand value (default no): no                  (这里填 no 或 直接回车)

>>> Accept these settings and adjust configuration files (y/n)? y    #输入y回车确认
Adjusting /etc/ppp/pppoe.conf
Adjusting /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)

DNS

Congratulations, it should be all set up!

Please 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.

Type 'pppoe-start' to bring up your PPPoE link and 'pppoe-stop' to bring
it down.  Type 'pppoe-status' to see the link status.
    别急,我先吐吐苦水再写教程,之后我又走了弯路,我拨号后,还是不行,奇怪的是可以ping通DNS服务器,但是ping不通百度等。

>>> Enter the DNS information here: 202.96.128.86              (输入首选 DNS 地址,这个很重要,我一开始看网上是填 sever 表示自动获取DNS,但没有成功, 后来我查了自己所在城市DNS地址,这里是广东“其他地区”的首选DNS,建议百度自己的DNS地址)

这时我想起了那篇繁体文教程的话,于是

Please enter the IP address of your ISP's secondary DNS server.

先把NetworkManager废了再说,

If you just press enter, I will assume there is only one DNS server.

[root@KD src]# service NetworkManager stop
Stopping NetworkManager daemon:                            [  OK  ]
然后pppoe-start拨号!显示

>>> Enter the secondary DNS server address here: 202.96.128.143                    (备用 DNS 地址,同样查一下)

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