红联Linux门户
Linux帮助

求帮助centos下ADSL上网

发布时间:2009-08-01 15:21:38来源:红联作者:hcjwan
本人使用电信宽带,安装pppoe软件,也进行了配置.可是总是连接不上外网,请有经验的老师指教,谢谢.
文章评论

共有 6 条评论

  1. hcjwan 于 2009-08-02 15:02:11发表:

    感谢大家给的意见,我把具体情况说下,我先是安装了个虚拟机centos系统,网卡是跟主机网卡桥接.(其实桥接是什么意思我也搞不清楚)ip 是192.168.1.10,然后我装了个虚拟网卡(泡泡鱼),启动虚拟机,安装了pppoe,
    adsl-setup(配置跟上面朋友基本一致)
    adsl-sart
    ping http://www.hao123.com
    提示unknow........(E文不是太明白,意思好象是不明白hao123.com)
    pppoe-start跟adsl-start意思一样吧?

  2. dBoer 于 2009-08-01 22:36:23发表:

    兄弟,问一个关键问题,你是不是用过WIN来上网,而且还是用过“星空极速”来连接ADSL的?

  3. ptc开心宝贝 于 2009-08-01 22:13:29发表:

    一定要记得激活网卡,然后一定要

    拨号上网 pppoe-start


    要拨了账号才能上

  4. ptc开心宝贝 于 2009-08-01 22:12:55发表:

    下面是上网的配置


    --------------------------------------------------------------------------------

    首先确认你的网卡正常工作,让他处于自动获取IP状态,启动linux终端(root权限),因为fedora10下已经自带有pppoe的安装文件,可以直接输入如下命令,要想理解各个步骤是什么意思,那就看英语咯,我这里就不多解析了。

    [root@localhost ~]# pppoe-setup ---------------这里开始安装PPPOE

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


    LOGIN NAME

    Enter your Login Name (default root): xy170638010214 ---------------这里键入上网拨号的帐号

    INTERFACE

    Enter the Ethernet interface connected to the PPPoE modem
    For Solaris, this is likely to be something like /dev/hme0.
    For Linux, it will be ethX, where 'X' is a number.
    (default eth0): ---------------这里按回车键

    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): ---------------这里按回车键

    DNS

    Please enter the IP address of your ISP's primary DNS server.
    If your ISP claims that 'the server will provide dynamic DNS addresses',
    enter 'server' (all lower-case) here.
    If you just press enter, I will assume you know what you areppp

    doing and not modify your DNS setup.
    Enter the DNS information here: ---------------这里键入 server 也就是自动获得DNS

    PASSWORD

    Please enter your Password: ---------------这
    里键入上网拨号密码
    Please re-enter your Password: ---------------这里键入上网拨号密码

    USERCTRL

    Please enter 'yes' (three letters, lower-case.) if you want to allow
    normal user to start or stop DSL connection (default yes): ---------------这里键入 yes

    FIREWALLING

    Please choose the firewall rules to use. Note that these rules are
    very basic. You are strongly encouraged to use a more sophisticated NTHQB198529CFO
    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.

    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 ---------------这里键入 0

    Start this connection at boot time

    Do you want to start this connection at boot time?
    Please enter no or yes (default no):y ---------------这里键入 y

    ** Summary of what you entered **

    Ethernet Interface: eth0
    User name: xy170638010214
    Activate-on-demand: No
    DNS addresses: Supplied by ISP's server
    Firewalling: NONE
    User Control: yes
    Accept these settings and adjust configuration files (y/n)? y ---------------这里键入 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.

    [root@localhost ~]# pppoe-start ---------------激活PPPOE设备,成功后会自动返回
    [root@localhost ~]# pppoe-status ---------------查看PPPOE状态
    pppoe-status: Link is up and running on interface ppp0
    6: ppp0: mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
    link/ppp
    inet 113.14.36.24 peer 113.14.32.1/32 scope global ppp0 ---------------这里有IP分配给你了,可以知道你已经成功登录这个帐号了。我们ping下百度IP看看 通了,所以可以上网咯。
    [root@localhost ~]# ping 121.14.88.14
    PING 121.14.88.14 (121.14.88.14) 56(84) bytes of data.
    64 bytes from 121.14.88.14: icmp_seq=1 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=2 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=3 ttl=54 time=17.6 ms
    64 bytes from 121.14.88.14: icmp_seq=4 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=5 ttl=54 time=17.7 ms
    ^C64 bytes from 121.14.88.14: icmp_seq=6 ttl=54 time=17.6 ms
    64 bytes from 121.14.88.14: icmp_seq=7 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=8 ttl=54 time=17.6 ms
    64 bytes from 121.14.88.14: icmp_seq=9 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=10 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=11 ttl=54 time=17.7 ms
    64 bytes from 121.14.88.14: icmp_seq=12 ttl=54 time=17.7 ms
    ^C64 bytes from 121.14.88.14: icmp_seq=13 ttl=54 time=18.1 ms
    64 bytes from 121.14.88.14: icmp_seq=14 ttl=54 time=17.6 ms
    64 bytes from 121.14.88.14: icmp_seq=15 ttl=54 time=17.6 ms
    ^C^X64 bytes from 121.14.88.14: icmp_seq=16 ttl=54 time=17.6 ms
    ^X^C
    --- 121.14.88.14 ping statistics ---
    16 packets transmitted, 16 received, 0% packet loss, time 15895ms
    rtt min/avg/max/mdev = 17.675/17.744/18.170/0.175 ms
    [root@localhost ~]# pppoe-status
    pppoe-status: Link is up and running on interface ppp0
    6: ppp0: mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 3
    link/ppp
    inet 113.14.36.24 peer 113.14.32.1/32 scope global ppp0
    [root@localhost ~]#

    以下是对PPPOE的基本操作

    使用:
    拨号上网 pppoe-start
    段开上网 pppoe-stop
    查看状态 pppoe-status

  5. wangyu 于 2009-08-01 18:14:46发表:

    ppp不能上网,最大的可能是DNS的问题(曾折磨我N久),你的DNS对不?我在红旗和RHEL 5下用的rp-pppoe都成功了,就是DSN配了好久,用过ubuntu,好像不需要自己输入DNS

  6. l460618498 于 2009-08-01 16:29:50发表:

    网络配置有问题没??